Installation, Operation and Maintenance Instructions

Model 3700 8th EditionThese instructions also apply to Model 3710.

Pump Safety TipsSafety Apparel:

• Insulated work gloves when handling hot bearingsor using bearing heater

• Heavy work gloves when handling parts with sharpedges, especially impellers

• Safety glasses (with side shields) for eyeprotection, especially in machine shop areas

• Steel-toed shoes for foot protection when handlingparts, heavy tools, etc.

• Other personal protective equipment to protectagainst hazardous/toxic fluids

Coupling Guards:

• Never operate a pump without a coupling guardproperly installed

Flanged Connections:

• Never force piping to make a connection with a pump

• Use only fasteners of the proper size and material

• Ensure there are no missing fasteners

• Beware of corroded or loose fasteners

Operation:

• Do not operate below minimum rated flow, or withsuction/discharge valves closed

• Do not open vent or drain valves, or remove plugswhile system is pressurized

Maintenance Safety:

• Always lock out power

• Ensure pump is isolated from system and pressureis relieved before disassembling pump, removingplugs, or disconnecting piping

• Use proper lifting and supporting equipment toprevent serious injury

• Observe proper decontamination procedures

• Know and follow company safety regulations

Observe all cautions and warnings highlighted inpump Installation, Operation and Maintenance

Instructions.

FOREWORDThis manual provides instructions for the Installation, Operation, and Maintenance ofthe Goulds Model 3700 8th Edition High Pressure, High Temperature Process Pumpdesigned to meet the requirements of the 8th Edition of API* Standard 610. This manualcovers the standard product plus common options that are available. For specialoptions, supplemental instructions are supplied. This manual must be read andunderstood before installation and maintenance.

The design, materials, and workmanship incorporated in the construction of Goulds pumpsmake them capable of giving long, trouble-free service. The life and satisfactory service of anymechanical unit, however, is enhanced and extended by correct application, properinstallation, periodic inspection, condition monitoring and careful maintenance. This instructionmanual was prepared to assist operators in understanding the construction and the correctmethods of installing, operating, and maintaining these pumps.

ITT Industries - Goulds Pumps shall not be liable for physical injury, damage or delayscaused by a failure to observe the instructions for Installation, Operation, andMaintenance contained in this manual.

Warranty is valid only when genuine ITT Industries - Goulds Pumps parts are used.

Use of the equipment on a service other than stated in the order will nullify the warranty,unless written approval is obtained in advance from ITT Industries - Goulds Pumps.

Supervision by an authorized ITT Industries - Goulds representative is recommended toassure proper installation.

Additional manuals can be obtained by contacting your local ITT Industries - Gouldsrepresentative or by calling 1-(800)-446-8537.

THIS MANUAL EXPLAINS� Proper Installation

� Start-up Procedures

� Operation Procedures

� Routine Maintenance

� Pump Overhaul

� Troubleshooting

� Ordering Spare or Repair Parts

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* American Petroleum Institute1220 L Street, NorthwestWashington, D.C. 20005

4 3700-8th IOM 12/04

TABLE OF CONTENTSPAGE

7 SAFETY

9 GENERAL INFORMATION

13 INSTALLATION

19 OPERATION

25 PREVENTIVE MAINTENANCE

29 DISASSEMBLY & REASSEMBLY

65 SPARE PARTS

71 APPENDIX

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5

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8

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6

SECTION

6 3700-8th IOM 12/04

SAFETYDEFINITIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7GENERAL PRECAUTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . 7

DEFINITIONS

This pump has been designed for safe and reliableoperation when properly used and maintained inaccordance with instructions contained in this manual.A pump is a pressure containing device with rotatingparts that can be hazardous. Operators andmaintenance personnel must realize this and followsafety measures. ITT Industries - Goulds Pumpsshall not be liable for physical injury, damage ordelays caused by a failure to observe the instructionsin this manual.

Throughout this manual the words WARNING,

CAUTION, and NOTE are used to indicateprocedures or situations which require specialoperator attention:

�! WARNINGWarning is used to indicate the presence of ahazard which can cause severe personal injury,death, or substantial property damage if thewarning is ignored.

�! CAUTIONCaution is used to indicate the presence of ahazard which will or can cause minor personalinjury or property damage if the warningis ignored.

NOTE: Operating procedure, condition, etc.which is essential to observe.

EXAMPLES

�! WARNINGPump shall never be operated without couplingguard installed correctly.

�! CAUTIONThrottling flow from the suction side may causecavitation and pump damage.

NOTE: Proper alignment is essential for longpump life.

GENERAL PRECAUTIONS

�! WARNINGPersonal injuries will result if proceduresoutlined in this manual are not followed.

• NEVER operate pump without coupling guardcorrectly installed.

• NEVER operate pump beyond the rated conditionsto which the pump was sold.

• NEVER start pump without proper prime (sufficientliquid in pump casing).

• NEVER run pump below recommended minimumflow or when dry.

• ALWAYS lock out power to the driver beforeperforming pump maintenance.

• NEVER operate pump without safety devices installed.

• NEVER operate pump with discharge valve closed.

• NEVER operate pump with suction valve closed.

• DO NOT change conditions of service withoutapproval of an authorized Goulds representative.

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8 3700-8th IOM 12/04

GENERAL INFORMATION

PUMP DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9NAMEPLATE INFORMATION. . . . . . . . . . . . . . . . . . . . . . . . . 10RECEIVING THE PUMP. . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

Storage Requirements . . . . . . . . . . . . . . . . . . . . . . . . . . . 11Handling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11

PUMP DESCRIPTION

The Model 3700 8th Edition is a high pressure, hightemperature centrifugal pump that meets therequirements of API Standard 610 8th Edition.

The model is based on 6 power ends and 38 hydraulicpump sizes.

Casing - The casing is a centerline mounted design.The gasket is fully confined. ANSI Class 300 raisedface serrated flanges are standard; ANSI Class 300flat face serrated and ring joint flanges are available.Also available are ANSI class 600 flanges in the sametypes.

Impeller - The impeller is fully enclosed and keydriven by the shaft. An impeller bolt with lockwasheror impeller nut with locking set screw prevents axialmovement.

Seal Chamber Cover - The Model 3700 8th Edition isavailable with a seal chamber cover meeting API-6108th Edition and API 682 dimensions for improvedperformance of mechanical seals.

Power End - Ring oil lubricated bearings arestandard. The power end is sealed with labyrinthseals. Pure and purge oil mist lubrication are options.Some machining is required to convert from ring oillubrication to oil mist.

Shaft - The standard shaft is machined and ground tocomply with API 610 8th Edition criteria.

Bearings - The inboard (radial) bearing carries onlyradial load; it is free to float axially in the frame. Theoutboard (thrust) bearing is shouldered and locked tothe shaft and retained in the bearing frame to enableit to carry radial and thrust loads. All fits are precisionmachined to industry standards. The inboard bearingis a single row deep groove ball bearing. Theoutboard bearing is a duplex angular contact bearing,which uses a pair of single row angular contact ballbearings mounted back-to-back.

Baseplate - The fabricated steel baseplate isdesigned to support the pump, driver and accessoriesin accordance with API-610 8th Edition requirements.

Direction of Rotation - Counterclockwise (left hand)as viewed from the driver, looking at the pump shaft.

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NAMEPLATE INFORMATION

Every pump has a Goulds nameplate that providesinformation about the pump. The nameplate is locatedon the pump casing.

Special tags which provide additional information(mechanical seal data, etc.) and special taggingrequired by customers are located on the pumpcasing or on the bearing frame.

The standard nameplate provides information aboutthe pump’s size, rating, bearings, serial number,hydrostatic test pressure of pressure containmentparts, maximum allowable working pressure atdesignated temperature and construction / customer’sitem number. Rating and hydrostatic test pressure

are expressed in English units. Note the format ofpump size: Discharge x Suction - Nominal ImpellerDiameter in inches, for example, 2x3-13 (Fig. 1).

The standard nameplate is also available in a versionwhich expresses the rating and hydrostatic testpressure in metric units (Fig. 2).

When ordering spare parts you will need to identifypump model, size, serial number, and the itemnumber of required parts. Pump information can betaken from the Goulds nameplate. Item numbers canbe found in this manual.

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Fig. 1

Fig. 2

RECEIVING THE PUMP

Inspect the pump as soon as it is received. Carefullycheck that everything is in good order. Make notes ofdamaged or missing items on the receipt and freightbill. File any claims with the transportation companyas soon as possible.

STORAGE REQUIREMENTSShort Term (Less than 6 months)Goulds normal packaging procedure is designed toprotect pump during shipping. Upon receipt, store in acovered and dry location.

Long Term (More than 6 months)Preservative treatment of bearings and machinedsurfaces will be required. Rotate shaft several timesevery 3 months. Refer to driver and couplingmanufacturers for their long term storage procedures.Store in a covered and dry location.

NOTE: Long term storage treatment may bepurchased with initial pump order.

HANDLING

�! WARNINGPump and components are heavy. Failure toproperly lift and support equipment could resultin serious physical injury, or damage to pumps.

Use care when moving pumps. Lifting equipmentmust be able to adequately support the entireassembly. Hoist bare pump using suitable slingsunder the outboard end of the bearing frame and underthe suction flange (Fig. 3).

Baseplate mounted units with or without drivers aremoved with slings through the baseplate’s lifting lugs(Fig. 4 & 5).

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Fig. 3

Fig. 4

Fig. 5

12 3700-8th IOM 12/04

INSTALLATION

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13SITE/FOUNDATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13BASEPLATE INSTALLATION PROCEDURE. . . . . . . . . . . . . . . . . 14

Baseplate Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . . 14Foundation Preparation . . . . . . . . . . . . . . . . . . . . . . . . . . 14Setting and Leveling Baseplate. . . . . . . . . . . . . . . . . . . . . . . 14

ALIGNMENT AND ALIGNMENT CRITERIA . . . . . . . . . . . . . . . . . 15General Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . 15Alignment Criteria . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15

ALIGNMENT TROUBLESHOOTING . . . . . . . . . . . . . . . . . . . . . 16BASEPLATE GROUTING PROCEDURE . . . . . . . . . . . . . . . . . . . 16

General Procedure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16Alignment Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16

PIPING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Suction Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17Discharge Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Bypass Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Auxiliary Piping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18Final Piping Check . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18

GENERAL

Procedures for installation described within this sectionare general in nature. It is assumed that the installerhas a basic knowledge of acceptable methods. Moredetailed procedures are described in various publi-

cations, including API Recommended Practice 686/PIP (Process Industry Practices) REIE 686,“Recommended Practices for Machinery Installationand Installation Design.”

SITE/FOUNDATION

A pump should be located near the supply of liquidand have adequate space for operation, maintenance,and inspection. Be sure to allow for crane or hoistservice.

Baseplate mounted pumps are normally grouted on aconcrete foundation which has been poured on asolid footing. The foundation must be able to absorbany vibration and to form a permanent, rigid supportfor the pumping unit.

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The location and size of foundation bolts are shownon the outline assembly drawing provided with thepump data package.

Foundation bolts commonly used are sleeve type(Fig. 6) and J type. If using the sleeve type, the insidediameter of the sleeve should be 2 1/2 - 3 times the boltdiameter. A washer should be placed between the bolthead and the sleeve. Both foundation bolt types permitmovement for final bolt adjustment.

BASEPLATE INSTALLATION PROCEDURE

Industry standard procedures, such as API RP 686/PIP REIE 686, and/or the following procedure shouldbe followed prior to grouting the baseplate. Theprocedure assumes the installer has a basicknowledge of baseplate and foundation design andinstallation methods.

BASEPLATE PREPARATION1. Inspect all surfaces of baseplate that will contact

grout for contamination (e.g. - rust, oil, grime, etc.).

2. Thoroughly clean all surfaces of the baseplatethat will contact grout with a cleaner that will notleave any residue.

NOTE: It may be necessary to sandblast thecontact surfaces and coat with a primer compati-ble with the grout. If sandblasting is necessary,remove all equipment prior to sandblasting.

3. Inspect all machined surfaces for burrs, rust, paintor any other type of contamination. If necessary,use a honing stone to remove burrs.

FOUNDATION PREPARATION1. Chip top of foundation a minimum of 25 mm

(1.0 in.) to remove porous or low strengthconcrete. If using a pneumatic hammer, assurethat it is not contaminating the surface with oil,moisture, etc.

�! CAUTIONDo not use heavy tools such as jackhammers,as they could damage the structural integrity ofthe foundation.

2. Remove water and/or debris from foundation boltholes/sleeves. If the sleeve type bolts are beingused, fill the sleeves with nonbinding moldablematerial and seal to prevent grout from entering.

3. Coat exposed portion of anchor bolts with anon-bonding compound such as paste wax toprevent grout from adhering to anchor bolts.

NOTE: Do not use oils or liquid wax.

4. If recommended by grout manufacturer, coatfoundation surface with a compatible primer.

SETTING AND LEVELING BASEPLATE1. Lower baseplate carefully onto foundation bolts

(Fig. 7).

2. Use leveling (jack) screws to raise bottom edge ofthe baseplate 25 - 50 mm (1-2 in.) abovefoundation to allow for adequate grouting. Thiswill provide even support for the baseplate once itis grouted.

14 3700-8th IOM 12/04

Fig. 6

Fig. 7

3. Level baseplate to within 0.20 mm/m (.002 in./ft.)of length or width of the baseplate, respectively,by adjusting leveling screws. Maximum totalvariation from one end or side of the baseplate tothe other is 0.38 mm (.015 in.).

Equipment mounting surfaces should be utilizedto establish level.

4. Coat portions of leveling screws that will contactgrout with a non-bonding compound such aspaste wax to facilitate their removal after grouting.

NOTE: Do not use oils or liquid wax.

5. Thread nuts on foundation bolts and hand tighten.

ALIGNMENT AND ALIGNMENT CRITERIA

GENERAL CONSIDERATIONS

�! WARNINGBefore beginning any alignment procedure,make sure driver power is locked out. Failureto lock out driver power will result in seriousphysical injury.

To remove coupling guard, refer to coupling guardinstallation and disassembly instructions in Appendix I.

The times at which alignment is checked and adjustedare:

Initial Alignment (Cold Alignment) is done prior tooperation when the pump and the driver are atambient temperatures.

• Before Grouting Baseplate - To ensurealignment can be obtained.

• After Connecting Piping and GroutingBaseplate - To ensure pipe strains haven’taltered alignment.

Final Alignment (Hot Alignment) is done afteroperation when the pump and driver are at operatingtemperatures.

• After First Run - To obtain correct alignmentwhen both pump and driver are at operatingtemperature. Thereafter, alignment should bechecked periodically in accordance with plantoperating procedures.

NOTE: Alignment check must be made ifprocess temperature changes, piping changesand/or pump service is performed.

Alignment is achieved by adding or removing shimsfrom under the driver and/or shifting driver horizontallyas needed.

NOTE: Proper alignment is the responsibilityof the installer and user of the unit.

Accurate alignment of the equipment must beattained. Trouble-free operation can be accomplishedby achieving alignment within the levels specified inthe following section.

Three common alignment methods are utilized:

• Reverse Dial Indicator method is most common.

• Laser method is similar to reverse dialindicator method, but uses a laser to obtain thenecessary measurements.

• Dial Indicator (rim-and-face) method.

Follow alignment equipment manufacturers’procedures when utilizing reverse dial indicator orlaser methods. A detailed procedure for alignmentusing the dial indicator (rim-and-face) method isincluded as Appendix II.

ALIGNMENT CRITERIAGood alignment is attained when readings as specified inthis section have been achieved with pump and driver atoperating temperatures (final alignment).

Table 1 shows maximum allowable Total IndicatorReading (T.I.R.) for parallel and angular misalignment.

Table 1Maximum Allowable

Parallel and Angular Misalignment

GroupMaximum Allowable Misalignment

Parallel Angular

All 0.05 mm(.002 in.)

0.03 degrees[0.125 mm/cm

(.0005 in. /in.) of cou-pling facediameter]

NOTE A: For electric motors, motor shaft initial(cold) parallel vertical alignment setting should be0.05 - 0.10 mm (.002-.004 in.) lower than pumpshaft.

NOTE B: For other drivers (turbines, engines, etc.),follow driver manufacturers’ recommendations.

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ALIGNMENT TROUBLESHOOTING

BASEPLATE GROUTING PROCEDURE

GENERAL PROCEDUREUse of non-shrink epoxy grout is recommended.

NOTE: Grout manufacturer’s instructionsshould be consulted and followed.

The following are general procedures for groutingbaseplates. Additional information may be found inAPI Standard 610, 8th Edition, Appendix L, APIRP 686, Chapter 5, and other industry standards.

Baseplate Installation Procedure should be followedprior to grouting baseplate.

1. Build dam (form) around foundation to level ofbottom of baseplate (Fig. 8).

2. Pour grout through grout hole in baseplate, up tolevel of dam. Remove air bubbles from grout as itis poured by puddling or by pumping the grout intoplace.

3. Strike along top of dam with trowel to give a neatfinished appearance.

4. Allow grout to set.

5. Fill remainder of baseplate with grout, removingair as before (Fig. 9).

6. Allow grout to set at least 48 hours. Levelingscrews should be removed when grout hashardened.

7. Tighten foundation bolts.

ALIGNMENT CHECKRe-check alignment before continuing, using criteriapreviously stated.

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Problem Probable Cause Remedy

Cannot obtain horizontal (Side-to-Side)alignment, angular or parallel

Driver feet bolt bound.Loosen pump hold down bolts and slide pumpand driver until horizontal alignment is achieved.

Baseplate not leveledproperly, probably twisted.

Determine which corner(s) of the baseplate arehigh or low and adjust leveling screws at theappropriate corner(s) and realign.

Cannot obtain vertical (Top-to-Bottom) alignment,angular or parallel

Baseplate not leveledproperly, probably bowed.

Determine if center of baseplate should be raised orlowered and correct by adjusting leveling screwsequally at the center of the baseplate.

Fig. 8

Fig. 9

PIPING

Guidelines for piping are given in the “HydraulicInstitute Standards,” available from:

Hydraulic Institute30200 Detroit RoadCleveland, OH 44145-1967

and in API RP 686, and must be reviewed prior topump installation.

�! WARNINGNever draw piping into place by forcing at theflanged connections of the pump. This mayimpose dangerous strains on the unit andcause misalignment between pump and driver.Pipe strain will adversely affect the operationof the pump resulting in physical injury anddamage to the equipment.

1. Piping runs should be as short as possible tominimize friction losses.

2. It is suggested that expansion loops be properlydesigned and installed in suction and/or dischargelines when handling liquids at elevatedtemperatures, so thermal expansion of piping willnot draw pump out of alignment.

3. The piping should be arranged to allow pumpflushing prior to removal of the unit on serviceshandling hazardous liquids.

4. Carefully clean all pipe parts, valves and fittings,and pump branches prior to assembly.

5. All piping must be supported independently of,and line up naturally with, the pump flanges.Table 2 shows piping flange alignment criteria.

Table 2Piping Flange Alignment

Type Criteria

Axial Flange gasket thickness ± 0.8 mm (.03 in.).

Parallel 0.001 mm/mm (.001 in./in.) of flange diameterto a maximum of 0.8 mm (.03 in.).

Concentric Flange bolts should easily install by hand.

In no case should loads on the pump flangesexceed the limits stated in API Standard 610,8th Edition.

6. Piping must not be connected to the pump untilthe grout has thoroughly hardened and thefoundation bolts, as well as driver and pump hold-down bolts, have been tightened.

SUCTION PIPING

�! CAUTIONNPSHA must always exceed NPSHR as shownon Goulds performance curves received withorder. (Reference Hydraulic Institute for NPSHand pipe friction values needed to evaluatesuction piping).

Properly designed and installed suction piping is anecessity for trouble-free pump operation. Suction pipingshould be flushed BEFORE connection to the pump.

1. Use of elbows close to the pump suction flangeshould be avoided. There should be a minimumof two (2) pipe diameters of straight pipe [five (5)pipe diameters is preferred] between the elbowand suction inlet. Where used, elbows should belong radius.

2. Use suction pipe one (1) or two (2) sizes largerthan the pump suction, with a reducer at thesuction flange. Suction piping should never be ofsmaller diameter than the pump suction.

3. Reducers, if used, should be eccentric andlocated at the pump suction flange with slopingside down.

4. Pump must never be throttled on suction side.

5. A suction screen should be installed prior to initialstart-up and when suction system has beenopened for work. The screen should be of thecone type with a net area equal to at least three(3) times the cross sectional area of the suctionpipe. The mesh of the screen should be sized toprevent particles larger than 1.6 mm (1/16 in.)from entering the pump and should be installed ina spool piece to allow removal for cleaning. Thescreen should remain in the system until periodicinspection shows system is clean.

6. Separate suction lines are recommended whenmore than one pump is operating from the samesource of supply.

Suction Lift Conditions1. Suction pipe must be free from air pockets.

2. Suction piping must slope upwards to pump.

3. All joints must be air tight.

4. A means of priming the pump must be provided.

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Suction Head/Flooded Suction Conditions1. An isolation valve should be installed in the

suction line at least two (2) pipe diameters fromthe pump suction to permit closing of the line forpump inspection and maintenance.

2. Keep suction pipe free from air pockets.

3. Piping should be level or slope graduallydownward from the source of supply.

4. No portion of the piping should extend belowpump suction flange.

5. The size of entrance from supply should be one(1) or two (2) sizes larger than the suction pipe.

6. The suction pipe must be adequately submergedbelow the liquid surface to prevent vortices and airentrainment at the supply.

DISCHARGE PIPINGProperly designed and installed discharge piping is anecessity for trouble-free pump operation. Dischargepiping should be flushed BEFORE connection tothe pump.

1. Isolation and check valves should be installed indischarge line. Locate the check valve betweenisolation valve and pump; this will permitinspection of the check valve. The isolation valveis required for priming, regulation of flow, and forinspection and maintenance of pump. The checkvalve prevents pump or seal damage due toreverse flow through the pump when the driver isturned off.

2. Increasers, if used, should be placed betweenpump and check valves.

3. Cushioning devices should be used to protect thepump from surges and water hammer ifquick-closing valves are installed in system.

BYPASS PIPINGSystems that require operation at reduced flows forprolonged periods should be provided with a bypassline connected from the discharge side (before anyvalves) to the source of suction.

A minimum flow orifice can be sized and installed inbypass line to preclude bypassing excessive flows.Consult nearest sales office or factory for assistancein sizing orifice.

An automatic recirculation control valve and/orsolenoid operated valve should be considered if aconstant bypass (i.e. orifice) is not possible.

AUXILIARY PIPINGAuxiliary piping may be required for bearing cooling,seal chamber cover cooling, mechanical seal flush orother special features supplied with the pump.Consult pump data sheet for specific auxiliary pipingrecommendations.

If bearing cooling and/or seal chamber cover cooling isrequired, follow guidelines listed below.

1. Flows of 4 l/min. (1 GPM) will generally satisfycooling requirements for each component. If bothbearing and seal chamber cover cooling areprovided, a minimum flow of 8 l/min. (2 GPM) willbe necessary.

2. Cooling water pressure should not exceed7.0 kg/cm2 (100 psig).

FINAL PIPING CHECKAfter connecting the piping to pump:

1. Rotate shaft several times by hand to be sure thatthere is no binding and all parts are free.

2. Check alignment, per alignment criteria outlinedpreviously, to determine if pipe strain has affectedalignment. If pipe strain exists, correct piping.

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OPERATION

PREPARATION FOR START-UP . . . . . . . . . . . . . . . . . . . . . . . 19Checking Rotation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19Coupling Pump and Driver . . . . . . . . . . . . . . . . . . . . . . . . . 19Lubricating Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Shaft Sealing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Priming Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20Start-up Precautions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21

STARTING PUMP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22OPERATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22

General Considerations . . . . . . . . . . . . . . . . . . . . . . . . . . 22Operational Checks . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22Operating at Reduced Capacity . . . . . . . . . . . . . . . . . . . . . . 22Operating Under Freezing Conditions . . . . . . . . . . . . . . . . . . . 22

SHUTDOWN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23FINAL ALIGNMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23DOWELING PUMP CASING . . . . . . . . . . . . . . . . . . . . . . . . . 23

PREPARATION FOR START-UP

CHECKING ROTATION

�! CAUTIONSerious damage may result if pump is run inthe wrong rotation.

1. Lock out power to driver.

�! WARNINGLock out driver power to prevent accidentalstart-up and physical injury.

2. Make sure coupling hubs are securely fastenedto shafts.

�! WARNINGDo NOT jog a coupled pump.

NOTE: Pump is shipped with coupling spacerremoved.

3. Unlock driver power.

4. Make sure everyone is clear. Jog driver just longenough to determine direction of rotation. Rotationmust correspond to arrow on bearing frame.

5. Lock out power to driver.

COUPLING PUMP AND DRIVER

�! WARNINGLock out driver power to prevent accidentalrotation and physical injury.

1. Install and lubricate coupling per manufacturer’sinstructions.

2. Install coupling guard. Refer to coupling guardinstallation instructions in Appendix I.

�! WARNING

Never operate a pump without coupling guardproperly installed. Refer to Appendix I forcoupling guard installation instructions.Personal injury will occur if pump is runwithout coupling guard.

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4

LUBRICATING BEARINGS

Ring Oil Lubrication

Ring oil lubricated ball bearings are standard onModel 3700 8th Edition units.

The bearings are not lubricated at the factory.

Assure that oil rings are properly seated in grooves inshaft, as described in Disassembly & Reassembly

section.

See Preventive Maintenance section for lubricationrecommendations.

Pure or Purge Oil Mist Lubrication

Pure or purge oil mist are optional features for theModel 3700 8th Edition. Follow oil mist generatormanufacturer’s instructions. The inlet and outletconnections are located on the top and bottom,respectively, of the bearing frame.

See Preventive Maintenance section for lubricationrecommendations and connection locations.

�! WARNINGOperation of the unit without proper lubricationwill cause bearing failure and pump seizure.

SHAFT SEALING WITH MECHANICAL SEALPumps may be shipped with or without mechanicalseal installed. Cartridge type mechanical seals arecommonly used for this model. Cartridge seals arepreset at the seal manufacturer’s facility and requireno field settings. Cartridge seals installed by the userrequire disengagement of the holding clips prior tooperation, allowing the seal to slide into place. If theseal has been installed in the pump by Goulds, theseclips have already been disengaged. For other typesof mechanical seals, refer to the seal manufacturer’sinstructions for installation and setting.

Connection of Sealing Liquid

For satisfactory operation, there must be a liquid filmbetween seal faces to lubricate them. Refer to sealmanufacturer’s drawing for location of taps. Somemethods which may be used to flush/cool the sealare:

• Product Flushing - In this arrangement, thepumpage is piped from the casing (and cooled inan external heat exchanger when required) theninjected into seal chamber.

• External Flush - A clean, cool compatible liquid isinjected from an outside source directly into sealchamber. Flushing liquid must be at a pressure0.35-1.05 kg/cm

2(5-15 psi) greater than seal chamber

pressure. Injection rate should be 2-8 l/min. (12-2 GPM).

• Other methods may be used which make use ofmultiple gland connections and/or seal chamberconnections. Refer to documentation supplied withthe pump, mechanical seal reference drawing, andpiping diagrams.

PRIMING PUMPNever start the pump until it has been properly primed.Several different methods of priming can be used,depending upon type of installation and service involved.

Suction Supply Above Pump

1. Slowly open the suction valve (Fig. 10).

2. Open air vents on the suction and discharge piping,casing, seal chamber, and seal piping, if provided,until all air is vented and only liquid flows out.

3. Close the vents.

20 3700-8th IOM 12/04

Fig. 10

Suction Supply Below Pump

A foot valve and outside source of liquid may be usedto prime the pump. Outside source of liquid can comefrom a priming pump, pressurized discharge line, orother supply (Fig. 11 and 12).

1. Close discharge valve and open air vents insuction and discharge piping, casing, sealchamber and seal piping, if provided.

2. Open valve in outside supply line until all air isvented and only liquid flows out.

�! WARNINGWhen handling hazardous and/or toxic fluids,proper personal protective equipment isrequired. If pump is being drained, precautionsmust be taken to prevent physical injury.Pumpage must be handled and disposed of inconformance with applicable regulations.

3. Close the vents and then the outside supply line.

Other Methods of Priming Pump

• Priming by ejector.

• Priming by automatic priming pump.

START-UP PRECAUTIONS1. All equipment and personal safety related devices

and controls must be installed and operatingproperly.

2. To prevent premature pump failure at initialstart-up due to dirt or debris in the pipe system,ensure the pump can be run continuously at fullspeed and flow for 2 to 3 hours.

3. Variable speed drivers should be brought to ratedspeed as quickly as possible.

4. Variable speed drivers should not be adjusted orchecked for speed governor or overspeed tripsettings while coupled to the pump at initialstart-up. If settings have not been verified,uncouple the unit and refer to drivermanufacturer’s instructions for assistance.

5. Running a new or rebuilt pump at slow speedsmay not provide enough flow to adequately flushand cool the wear ring and seal chamber coverbushing close running surfaces.

6. Pumpage temperatures in excess of 93° C (200° F)will require warm-up of pump prior to operation.Circulate a small amount of pumpage through thepump until the casing temperature is within 56° C(100° F) of the pumpage temperature and evenlyheated.

NOTE: Warm-up rate should not exceed 1.4° C(2.5° F) per minute.

3700-8th IOM 12/04 21

Fig. 12

Fig. 11

STARTING PUMP

1. Make sure suction valve and any recirculation orcooling lines are open.

2. Fully close or partially open discharge valve asdictated by system conditions.

3. Start driver.

�! CAUTIONImmediately observe pressure gauges. Ifdischarge pressure is not quickly attained,stop driver, reprime and attempt to restart.

4. Slowly open discharge valve until the desired flowis obtained.

�! CAUTIONObserve pump for vibration levels, bearingtemperature and excessive noise. If normallevels are exceeded, shut down and resolve.

OPERATION

GENERAL CONSIDERATIONSAlways vary capacity with regulating valve in thedischarge line. NEVER throttle flow from the suction side.

Driver may overload if the pumpage specific gravity(density) is greater than originally assumed, or therated flow rate is exceeded.

Always operate the pump at or near the ratedconditions to prevent damage resulting from cavitationor recirculation.

OPERATIONAL CHECKSThe following are minimum operational checks for thepump only. Consult driver and auxiliary equipmentmanufacturers’ literature for additional information.

1. On ring oil lubricated units, remove oil ringviewing port plugs to verify that oil rings areproperly positioned in grooves on shaft, areturning and are throwing oil. Replace plugs.

2. On pure or purge oil mist lubricated units, removeviewing port plugs and assure oil mist is flowingproperly. Replace plugs.

3. On ring oil and purge oil mist lubricated units,check oiler to ensure oil level has remained steady.

4. Check bearing temperatures using a pyrometer orother accurate temperature measuring device.Monitor bearing temperature frequently duringinitial operation to determine if a bearing problemexists as well as to establish normal bearingoperating temperature.

5. On units equipped with auxiliary piping, assurethat proper flows have been established and thatequipment is operating properly.

6. Establish baseline vibration readings to determinenormal running conditions. If it is determined thatthe unit is running rough, consult factory.

7. Monitor all gauges to ensure pump is running ator near rating and that suction screen (whenused) is not clogged.

OPERATING AT REDUCED CAPACITY

�! WARNING

Do NOT operate pump below minimum ratedflows or with discharge valve closed. Theseconditions may create an explosive hazard dueto vaporization of pumpage and can quicklylead to pump failure and physical injury.

Damage occurs from:

• Increased vibration levels - Affects bearings, sealchambers, and mechanical seals.

• Increased radial load - Increases stress on shaft andbearings.

• Heat build up - vaporization causes rotating partsto score or seize.

• Cavitation - Increases damage to internal surfacesof pump.

OPERATING UNDER FREEZINGCONDITIONSExposure to freezing conditions while pump is idlecould cause liquid to freeze and damage the pump.

Liquid inside pump should be drained. Liquid insideauxiliary piping, if supplied, should also be drained.

22 3700-8th IOM 12/04

SHUTDOWN

1. Slowly close discharge valve.

2. Shut down and lock out driver to preventaccidental rotation.

�! WARNINGWhen handling hazardous and/or toxic fluids,proper personal protective equipment isrequired. If pump is being drained, precautionsmust be taken to prevent physical injury.Pumpage must be handled and disposed of inconformance with applicable regulations.

FINAL ALIGNMENT

1. Run the unit under actual operating conditions for asufficient length of time to bring the pump and driverand associated systems to operating temperature.

2. Shut down and lock out driver as describedabove.

�! WARNINGBefore beginning any alignment procedure,make sure driver power is locked out. Failureto lock out driver power will result in seriousphysical injury.

3. Remove coupling guard. Refer to coupling guardinstallation and disassembly instructions inAppendix I.

4. Check alignment while unit is still hot peralignment criteria in Section 3.

5. Reinstall coupling guard. Refer to coupling guardinstallation and disassembly instructions inAppendix I.

DOWELING PUMP CASING

The pump casing may be doweled to the baseplatepedestals, if desired, to positively maintain position.Two (2) Number 7 taper pins are supplied for thispurpose.

NOTE: Doweling should only be done afterfinal alignment has been completed.

1. Drill two holes, one in each casing mounting pad,at the locations provided, using a 21/64 in. or “Q”size drill.

The holes should be drilled through both thecasing mounting pads and the baseplatepedestal, when possible. This makes cleaningthe metal chips produced from the drilling andreaming operations easier. Take care to clean allburrs and metal chips from the holes.

�! CAUTIONIf water cooled pedestals have been provided,do NOT drill through the baseplate pedestal orleakage of cooling water will occur.

2. Ream the holes with a Number 7 taper pinreamer to the proper fit with the taper dowel pins.Pins should insert to a depth that leaves only thethreaded portion exposed when fully seated.

3. Seat taper pins firmly in holes with hardwoodblock or soft faced hammer.

�! CAUTIONFailure to remove the dowel pins prior tocasing removal may result in casing damage.

3700-8th IOM 12/04 23

24 3700-8th IOM 12/04

PREVENTIVE MAINTENANCEGENERAL COMMENTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . 25MAINTENANCE SCHEDULE . . . . . . . . . . . . . . . . . . . . . . . . . 25

Routine Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . 25Routine Inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 253 Month Inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25Annual Inspections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25

MAINTENANCE OF BEARINGS . . . . . . . . . . . . . . . . . . . . . . . 26Ring Oil Lubricated Bearings . . . . . . . . . . . . . . . . . . . . . . . . 26Pure or Purge Oil Mist Lubricated Bearings (Optional) . . . . . . . . . . . 27

MAINTENANCE OF SHAFT SEALS . . . . . . . . . . . . . . . . . . . . . 27TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28

GENERAL COMMENTS

A routine maintenance program can extend the life of your pump. Well maintainedequipment will last longer and require fewer repairs. You should keep maintenancerecords as this will help pinpoint potential causes of problems.

MAINTENANCE SCHEDULE

ROUTINE MAINTENANCE

• Bearing lubrication

• Seal monitoring

• Vibration analysis

• Discharge pressure monitoring

• Temperature monitoring

ROUTINE INSPECTIONS

• Check for unusual noise, vibration and bearingtemperatures.

• Inspect pump and piping for leaks.

• Check seal chamber for leakage.

3 MONTH INSPECTIONS

• Check foundation and hold-down bolts for tightness.

• If pump has been left idle, check mechanical seal.Repair or replace if required.

• Oil should be changed at least every 3 months(2000 hours) or more often if there are any adverseatmospheric conditions or other conditions which mightcontaminate or break down the oil. Oil should also bechanged if it is cloudy or contaminated.

• Check shaft alignment and realign if required.

ANNUAL INSPECTIONS

• Check pump capacity, pressure and power. If pumpperformance does not satisfy your process require-ments, and process requirements have not changed,pump should be disassembled, inspected, and wornparts should be replaced. Otherwise, a systeminspection should be done.

3700-8th IOM 12/04 25

5

MAINTENANCE OF BEARINGS

RING OIL LUBRICATED BEARINGSRing oil lubricated ball bearings are standard onModel 3700 8th Edition pumps.

�! WARNINGPumps are shipped without oil. Oil lubricatedbearings must be lubricated at the job site.

A high quality turbine oil with rust and oxidation inhibitorsshould be used. For the majority of operationalconditions, bearing temperatures will run between 50° C(120° F) and 82° C (180° F). In this range, an oil of ISOviscosity grade 68 at 40° C (100° F) is recommended. Ifbearing temperatures exceed 82° C (180° F), use oil ofISO viscosity grade 100.

Bearing temperatures are generally about 11° C(20° F) higher than bearing housing outer surfacetemperature.

Some acceptable oils are:Exxon Teresstic EP 68

Mobil Mobil DTE 26 300 SSU@ 40° C (100° F)

Sunoco Sunvis 968

Royal Purple SYNFILM ISO VG 68Synthetic Lube

For extreme conditions, refer to the factory or alubrication expert.

Oil should be changed after 200 hours if bearings arenew. Thereafter, change oil every 2000 operatinghours or 3 months, whichever first occurs.

Ring oil lubricated pumps are supplied with an oilerwhich maintains a constant oil level in the bearinghousing. The oiler must be adjusted to maintain theoil at the level of the mark on the side of the frame,which corresponds to the center of the bullseye sightglass. This is accomplished by setting the oileradjusting stem. Refer to Fig. 13 for proper settingdimensions.

NOTE: Setting dimension of 0 may beaccomplished by removing and discarding theoiler adjusting stem.

Oil reservoir in bearing frame should be filled by fillingoiler bottle with oil and placing it into the oiler housing.Several fillings of the oiler bottle will be required. Donot fill bearing frame oil reservoir through the vent orthrough the oiler housing without using the bottle.

Oil capacities and oiler information for the variousbearing frames are shown in Table 3.

Table 3Bearing Frame Oil Capacities

Group

Frame Oil Capacity Trico

Oiler No.

Oiler Capacity

ml Ounces ml Ounces

SA 600 20

5 237 8

SX 1115 38MA 950 32

LA, MX 1385 47LX 2120 72

XLX 2625 89

Verify the correct oil level by comparing the oil levelas viewed in the bullseye sight glass with the oil levelline on the side of the bearing frame.

26 3700-8th IOM 12/04

Fig. 13

OPTIONAL PURE OR PURGE OIL MISTLUBRICATED BEARINGS

�! WARNINGPumps are shipped without oil. Oil mist lubricatedbearings must be lubricated at the job site.

The same oil requirements applicable to ring oillubricated bearings also apply to oil mist lubricatedbearings.

For purge oil mist lubricated bearings, bearing frameshould be filled to the proper level as described underring oil lubricated bearings.

Below are listed the steps necessary for oil mistlubrication:

1. Follow oil mist system supplier’s instructions.

2. Connect oil mist supply lines to inlet connections(Fig. 14).

3. Connect drain/vent lines to outlet connections.

MAINTENANCE OF SHAFT SEALS

When mechanical seals are furnished by Goulds, amanufacturer’s reference drawing is supplied with thedata package. This drawing should be kept for futureuse when performing maintenance and adjusting theseal. The seal drawing will also specify required flushliquid and attachment points. The seal and all flushpiping must be checked and installed as needed priorto starting the pump.

The life of a mechanical seal depends on variousfactors such as cleanliness of the liquid handled andits lubricating properties. Due to the diversity ofoperating conditions it is, however, not possible togive definite indications as to its life.

�! WARNINGNEVER operate the pump without liquid suppliedto mechanical seal. Running a mechanical sealdry, even for a few seconds, can cause sealdamage and must be avoided. Physical injurycan occur if mechanical seal fails.

3700-8th IOM 12/04 27

5

Fig. 14

TROUBLESHOOTING

28 3700-8th IOM 12/04

Problem Probable Cause Remedy

No liquid delivered.

Pump not primed.Check that pump and suction line are full of liquid.Reprime pump.

Suction line clogged. Remove obstructions.

Impeller clogged with foreign material. Back flush pump to clean impeller.

Foot valve or suction pipe opening notsufficiently submerged.

Consult factory for proper depth.Use baffle to eliminate vortices.

Suction lift too high. Reduce suction lift.

Pump not producingrated flow or head.

Air leak thru gasket. Replace gasket.

Air leak thru seal chamber. Replace or readjust mechanical seal.

Impeller partly clogged. Back flush pump to clean impeller.

Worn wear rings. Replace defective part as required.

Insufficient suction head.Ensure that suction line shutoff valve is fully openand line is unobstructed.Increase suction head.

Worn or broken impeller. Inspect and replace if necessary.

Wrong direction of rotation.Change rotation to concur with directionindicated by arrow on bearing frame.

Pump starts then stopspumping.

Improperly primed pump. Reprime pump.

Air or vapor pockets in suction line. Rearrange piping to eliminate air pockets.

Air leak in suction line. Repair (plug) leak.

Bearings run hot.

Improper alignment. Re-align pump and driver.

Improper lubrication. Check lubricant for suitability and quantity.

Insufficient cooling liquid. Check cooling system.

Pump is noisy orvibrates.

Improper pump/dr iver alignment. Align shafts.

Partly clogged impeller causing imbalance. Backflush pump to clean impeller.

Broken or bent impeller or shaft. Replace as required.

Impeller out of balance. Balance impeller.

Foundation not rigid.Assure uniform contact of pump and/or supports withfoundation.

Worn bearings. Replace.

Suction or discharge piping not anchored or properlysupported.

Anchor per Hydraulic Institute Standards/API RP 686 recommendations.

Pump is cavitating. Locate and correct system problem.

Excessive leakage fromstuffing box.

Worn mechanical seal parts. Replace mechanical seal.

Overheating mechanical seal. Check lubrication and cooling lines.

Motor requiresexcessive power.

Head lower than rating. Pumps too much liquid.Consult factory.Install throttle valve.Cut impeller.

Liquid heavier than expected. Check specific gravity and viscosity.

Rotating parts bind. Check internal wear parts for proper clearances.

DISASSEMBLY & REASSEMBLY

REQUIRED TOOLS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29INSPECTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36RENEWAL OF WEAR PARTS . . . . . . . . . . . . . . . . . . . . . . . . 42REASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45ASSEMBLY TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . 57

REQUIRED TOOLS

DISASSEMBLY

�! WARNINGPump components are heavy. Proper methodsof lifting and securing must be employed toavoid physical injury and/or equipment damage.

�! WARNINGThe Model 3700 8th Edition may handle hazardousand/or toxic fluids. Proper personal protection isrequired. Precautions must be taken to preventphysical injury. Pumpage must be handled anddisposed of in conformance with applicableregulations.

NOTE: Before disassembling the pump foroverhaul, ensure all replacement partsare available.

�! WARNINGLock out power supply to driver to preventaccidental startup and physical injury.

PREPARATION FOR DISASSEMBLY1. Shut off all valves controlling flow to and from

pump.

�! WARNINGOperator must be aware of pumpage and safetyprecautions to prevent physical injury.

2. Drain liquid from piping; flush pump if necessary.

3. Disconnect all auxiliary piping, tubing andequipment that will interfere with removal ofback pull-out assembly.

4. Remove oiler bottle (251) and store in a safeplace.

5. Remove oil drain plug (408A) at bottom ofbearing frame (228) and drain oil. Dispose of oilin accordance with applicable regulations.

6. Remove coupling guard. Refer to coupling guardinstallation and disassembly instructions inAppendix I.

7. Remove coupling spacer. Follow couplingmanufacturer’s instructions for assistance.

3700-8th IOM 12/04 29

6

• Open end wrenches

• Lifting sling

• Induction bearing heater

• Brass drift punch

• Spanner wrench

• Allen wrenches

• Torque wrench with sockets

• Dial indicator

• Micrometers (inside and outside)

• Cleaning agents

• Feeler gauges

• Drill

• Tap

• Spanning type puller

• Soft face hammer

• Press

REMOVAL OF BACK PULL-OUT ASSEMBLY1. Loosen and remove casing stud nuts (425).

�! WARNINGIf necessary to use heat to remove parts, assurethat all liquid has been drained and that any vaporhas been removed. A method for accomplishingsuch removal is to purge casing, seal chamber, etc.with dry compressed air or inert gas.

2. Separate back pull-out assembly from casing(100) by tightening jacking bolts (418) provided.Tighten jacking bolts evenly using alternatingpattern (Fig. 15).

NOTE: Penetrating oil may be used if sealchamber cover to casing joint is excessivelycorroded.

3. Remove back pull-out assembly using liftingsling through bearing frame or other suitablemeans (Fig. 16).

�! WARNINGPump components are heavy. Proper methodsof lifting and securing must be employed toavoid physical injury and/or equipment damage.

4. Remove and discard casing gasket (351).(Replace this with new gasket duringreassembly.)

5. Secure to prevent movement during transport.Transport back pull-out assembly to a cleanwork area for further disassembly.

6. Support and secure back pull-out assembly firmlyto workbench.

REMOVAL OF IMPELLER1. Loosen set screw (198A) in end of impeller nut

(304) (Fig. 17).

2. Loosen and remove impeller nut (304).

NOTE: Impeller nut has LEFT HAND threads.

3. Pull impeller (101) from shaft (122). Use aspanning type puller if required.

�! CAUTIONWhen handling the impeller, wear heavy workgloves to prevent cutting hands on sharpedges.

4. Remove impeller key (178).

REMOVAL OF COUPLING HUB1. Coupling hubs are normally mounted flush with

the end of the shaft (122). If the coupling huboverhangs the shaft, blue and scribe shaft forrelocating coupling hub during reassembly(Fig. 18).

2. Remove coupling hub. Use a spanning typepuller or puller holes provided in hub. Refer tocoupling manufacturer’s instructions forassistance.

30 3700-8th IOM 12/04

Fig. 15

Fig. 16

Fig 17

REMOVAL OF SEAL CHAMBER COVER1. Loosen and remove gland stud nuts (355)

(Fig. 19).

2. Slide cartridge mechanical seal away from sealchamber cover (184).

3. Install eyebolt in tapped hole provided in sealchamber cover (184).

4. Rig lifting sling to eyebolt and to overhead liftingdevice. Take light strain on sling.

5. Loosen and remove seal chambercover/bearing frame bolts (370H).

6. Separate seal chamber cover (184) frombearing frame (228) by tapping on cover flangewith a hardwood block or a soft face hammer.

7. Guide seal chamber cover (184) over end ofshaft (122) once cover releases from bearingframe (228).

�! CAUTIONCartridge mechanical seal may be damaged if coveris allowed to come in contact with it.

8. Remove and discard bearing frame/sealchamber cover gasket (540C). (Replace thiswith a new gasket during reassembly).

9. Loosen set screws and remove cartridgemechanical seal from shaft (122).

10. Remove and discard mechanical seal O-ring orgland gasket (360Q). (Replace this with a newO-ring or gasket during reassembly.)

3700-8th IOM 12/04 31

6Fig. 18

Fig. 19

REMOVAL OF OPTIONALWATER JACKET COVER1. Suspend seal chamber cover (184) from lifting

sling, or firmly support seal chamber cover in avertical position such that one water jacketconnection is on the top and the other is on thebottom.

�! WARNINGSeal chamber cover must be adequatelysupported so that it cannot fall. Personal injuryand/or damage to equipment could occur.

2. Introduce water slowly into the bottomconnection until all air is vented and only watercomes out of the top connection.

�! WARNINGAll air must be vented from water jacket. If allair is not vented, it can cause water jacket cover(490) to be propelled from its fit in the sealchamber cover (184). Personal injury and/ordamage to equipment could occur.

3. Stop introduction of water into water jacket.

4. Seal top connection with plug or other suitablemeans.

5. Slowly increase water pressure on inlet(bottom) connection. Water jacket cover (490)should be forced from its fit in the seal chambercover (184). Be prepared to catch water jacketcover.

�! CAUTIONDo not exceed 7.0 kg/cm2 (100 psig) pressure inwater jacket.

6. Remove and discard outer and inner waterjacket cover O-rings (412S and 497T,respectively) from grooves in water jacket cover(490). (Replace these with new O-rings duringreassembly.)

DISASSEMBLY OF STANDARD RING OIL OROPTIONAL PURGE OIL MIST LUBRICATEDPOWER ENDThis section covers disassembly of standard ring oilor optional purge oil mist lubricated power end. Forpower ends with optional features (pure oil mistlubrication, bearing cooling, etc.), refer to theappropriate section.

1. Loosen radial (inboard) deflector set screw(222) (Fig. 20). SA and MA bearing frames donot use set screws to hold radial deflectors(123) in place. They are held in place on theshaft by an O-ring (497H). Replace O-ringduring reassembly.

2. Slide radial deflector (123) off shaft (122).

32 3700-8th IOM 12/04

Fig. 20

Fig. 20A

3. Loosen thrust (outboard) deflector set screw(222) (Fig. 21). SA and MA bearing frames donot use set screws to hold thrust deflectors(123A) in place. They are held in place on theshaft by an O-ring (497F). Replace O-ringduring reassembly (Fig. 21A).

4. Slide thrust deflector (123A) off shaft (122).

5. Loosen and remove thrust bearing endcover/bearing frame screws (370N).

6. Pry thrust bearing end cover (109A) with O-ring(412, not shown) out of bearing frame (228).SA and MA thrust bearing end covers aresealed to the bearing frame with a gasket(360A).

7. Remove and discard thrust bearing end covershims (390C). Replace with new shims duringreassembly. (Not applicable to pumps with SAand MA bearing frames.)

8. Remove two (2) oil ring retainers (469P) fromtop of bearing frame (228).

9. Remove two oil ring inspection plugs (113B)from top of bearing frame (228). SX, MX, LX,LA, and XLX pumps have two inspection plugs.SA and MA pumps have one inspection plug.

10. Withdraw shaft/bearing assembly carefully frombearing frame (228). Take care not to damageoil rings (114) (Figs. 21 & 22). Should oil ringsbind or hang up, they may be accessed throughthe inspection holes and repositioned using ahooked tool fashioned from wire. SX, MX, LX,LA, and XLX pumps have two (2) oil rings. SAand MA pumps have one (1) oil ring.

�! CAUTIONDo NOT remove bearings from shaft unlessthey are to be replaced.

11. Bend locking tang of thrust bearing lockwasher(382) from notch in bearing locknut (136) (Fig. 22).

NOTE: Save bearings for inspection.

12. Loosen and remove thrust bearing locknut(136) and lockwasher (382).

13. Press or pull duplex thrust bearing (112) fromshaft (122).

3700-8th IOM 12/04 33

6

Fig. 21

Fig. 21A

Fig. 21B

14. Remove oil ring(s) (114) from shaft (122). SX,MX, LX, LA, and XLX pumps have two (2) oilrings. SA and MA pumps have one (1) oil ring.

15. Press or pull radial bearing (168) from shaft(122).

NOTE: Save bearing for inspection.

16. Loosen and remove radial bearing end cover /bearing frame screws (370P) (Fig. 23). Omitthis step on SA and MA pumps. Radial bearingend cover (119A) is pressed in place andsealed with an O-ring (497J) (Fig. 23A).

17. Remove radial bearing end cover (119A) withgasket (360) from bearing frame (228) bytapping out of fit in frame. On SA and MApumps the end cover is sealed to the frame withan O-ring (497J).

18. Remove and discard radial bearing end covergasket (360). (Replace this with a new gasketduring reassembly.) On SA and MA pumps,discard radial bearing end cover O-ring (497J).Replace with new O-ring during assembly.

34 3700-8th IOM 12/04

Fig. 22

Fig. 23A

Fig. 23

DISASSEMBLY OF OPTIONAL PURE OILMIST LUBRICATED POWER ENDPure oil mist lubricated power ends are disassembledin the same manner as ring oil lubricated power ends.Oil rings (114) are not furnished with pure oil mistlubrication. Disregard any references to those parts.

DISASSEMBLY OF POWER END WITHOPTIONAL RADIAL HEAT FLINGERThe radial heat flinger (123B) replaces the standardradial deflector (123) and is removed in the samemanner (Fig. 24). Radial bearing end cover screwschange from (370P) to (370W) (Not applicable to SAand MA pumps). Remainder of disassembly is thesame as ring oil lubrication.

DISASSEMBLY OF POWER END WITHOPTIONAL AIR COOLING PACKAGE1. Loosen radial heat flinger set screw (222)

(Fig. 24).

2. Slide radial heat flinger (123B) off shaft (122).

3. Loosen thrust deflector fan set screw (222).

4. Slide thrust deflector fan (123E) off shaft (122).

5. Loosen and remove thrust bearing endcover/bearing frame screws (370N).

6. Remove thrust deflector fan guard support(234D).

Radial bearing end cover screws change from (370P)to (370W) (Not applicable to SA and MA pumps).

Remainder of disassembly is the same as steps 6-18of ring oil lubrication section.

DISASSEMBLY OF POWER END WITHOPTIONAL WATER COOLING PACKAGEThe finned tube cooling assembly (494) should beremoved from the bearing frame (228) prior towithdrawing the shaft/bearing assembly. Theremainder of disassembly is the same as ring oillubrication.

FINAL DISASSEMBLYRemove any remaining plugs and fittings.

3700-8th IOM 12/04 35

6

Fig. 24

INSPECTIONS

Model 3700 8th Edition parts must be inspected to thefollowing criteria before they are reassembled toensure the pump will run properly. Any part notmeeting the required criteria should be replaced.

NOTE: Clean parts to remove oil, grease or dirt.Protect machined surfaces against damageduring cleaning.

CASING (100)The casing should be inspected for excessive wear,corrosion or pitting. Areas most susceptible areindicated by the arrows in Fig. 25. Casing should berepaired or replaced if it exceeds the following criteria:

1. Localized wearing or grooving greater than 3.2mm (1

8 in.) deep.

2. Pitting greater than 3.2 mm (18 in.) deep.

3. Irregularities in case gasket seat surface whichcould hinder or prevent sealing.

IMPELLER (101)1. Inspect impeller vanes for damage. Replace if

grooved deeper than 1.6 mm (116 in.) or if worn

evenly more than 0.8 mm (132 in.). (Area “a” in

Fig. 26.)

2. Inspect shrouds for damage. Replace if worn orbent more than 0.8 mm (1

32 in.). (Area “b” inFig. 26.)

3. Inspect leading and trailing edges of the vanes forpitting, and erosion or corrosion damage. Replaceas in No. 1. (Area “c” in Fig. 26.)

4. Clean and check impeller bore diameter.

5. Check impeller balance. It should be rebalancedif it exceeds the criteria of ISO 1940 G1.0.

NOTE: Balancing impellers to ISO 1940 G1.0requires extremely accurate tooling andequipment, and should not be attemptedunless such tooling and equipment areavailable.

36 3700-8th IOM 12/04

Fig. 25 Fig. 26

BALL BEARINGS (112, 168)1. Ball bearings should be inspected for

contamination and damage. The condition ofthe bearings will provide useful information onoperating conditions in the bearing frame (228).

2. Lubricant condition and residue should be noted.

3. Bearing damage should be investigated todetermine cause. If cause is not normal wear, itshould be corrected before pump is returned toservice.

NOTE: It is good practice to replace all ballbearings that have been removed from their shaftfits. Always replace if they are worn, loose orrough and noisy when rotated. Replacementbearings must be of proper size and type.

4. Replacement bearings must be the same as, orequivalent to, those listed in Table 4.

Table 4Model 3700 8th Edition Bearings

GroupRadial

(Inboard)Thrust

(Outboard)

SAMASX

MX, LALX

XLX

6210 C36211 C36212 C36213 C36215 C36218 C3

7310 BEGAM7311 BEGAM7312 BEGAM7312 BEGAM7313 BEGAM7317 BEGAM

NOTE: Bearing numbers are based on SKF /MRC designations.

OIL RINGS (114)Oil rings must be as round as possible to functionproperly. Replace oil rings if they are worn, distortedand/or damaged beyond reasonable repair.

SHAFT (122)1. Check bearing fits. If any are outside the

tolerance shown in Tables 5 or 5A, replace theshaft (Fig. 27).

2. Check shaft surface for damage, especially inareas indicated by arrows in Fig. 27. Replace ifdamaged beyond reasonable repair.

3. Check shaft straightness. Use “V” blocks orbalance rollers to support the shaft on bearingfit areas. Replace shaft if runout exceeds 0.03mm (.001 in.)

NOTE: Do NOT use shaft centers for runoutcheck as they may have been damaged whenremoving bearings or impeller.

3700-8th IOM 12/04 37

6

Fig. 27

38 3700-8th IOM 12/04

Table 5Model 3700 8th Edition Bearing Fits & Tolerances (SI Units)

According to ISO 286 (ANSI/ABMA Standard 7)

Location DescriptionGroup and Dimensions (mm)

SA SX MA MX, LA LX XLX

Radial(Inboard)

Shaft O.D. 50.013 60.015 55.015 65.015 75.015 90.01850.002 60.002 55.002 65.002 75.002 90.003

Interference 0.002 0.002 0.002 0.002 0.002 0.0030.025 0.030 0.030 0.030 0.030 0.038

Bearing I.D. 49.988 59.985 54.985 64.985 74.985 89.98050.000 60.000 55.000 65.000 75.000 90.000

Frame I.D. 90.000 110.000 100.000 120.000 130.000 160.00090.022 110.022 100.022 120.022 130.025 160.025

Clearance 0.000 0.000 0.000 0.000 0.000 0.0000.037 0.037 0.037 0.037 0.043 0.050

Bearing O.D. 90.000 110.000 100.000 120.000 130.000 160.00089.985 110.022 99.985 119.985 129.982 159.975

Thrust(Outboard)

Shaft O.D. 50.013 60.015 55.015 60.015 65.015 85.01850.002 60.002 55.002 60.002 65.002 85.003

Interference 0.002 0.002 0.002 0.002 0.002 0.0030.025 0.030 0.025 0.030 0.030 0.038

Bearing I.D. 49.998 59.985 54.985 59.985 64.985 84.98050.000 60.000 55.000 60.000 65.000 85.000

Frame I.D. 110.000 130.000 120.000 130.000 140.000 180.000110.022 130.025 120.022 130.025 140.025 180.025

Clearance 0.000 0.000 0.000 0.000 0.000 0.0000.037 0.043 0.037 0.043 0.043 0.050

Bearing O.D. 110.000 130.000 120.000 130.000 140.000 180.000109.985 129.982 119.985 129.982 139.982 179.975

WEAR RINGS (164, 202, 203, 230)All units are equipped with casing (164), impeller (202and 203) and seal chamber cover wear rings (230).

When clearances between the rings becomeexcessive, hydraulic performance decreasessubstantially.

1. Measure all wear ring diameters(Figs. 28, 29, 30).

2. Calculate diametral wear ring clearances.Minimum diametral clearances should be asshown in Table 6.

3. Replace wear rings when diametral clearanceexceeds two times the minimum clearance asshown in Table 6 or when the hydraulicperformance has decreased to unacceptablelevels. Refer to Renewal of Wear Parts forreplacement instructions for wear rings.

3700-8th IOM 12/04 39

6

Fig. 28

Table 5AModel 3700 8th Edition Bearing Fits & Tolerances (USA Units)

According to ISO 286 (ANSI/ABMA Standard 7)

Location DescriptionGroup and Dimensions (inches)

SA SX MA MX, LA LX XLX

Radial(Inboard)

Shaft O.D. 1.9690 2.3628 2.1659 2.5597 2.9534 3.54401.9686 2.3623 2.1654 2.5592 2.9529 3.5434

Interference 0.0001 0.0001 0.0001 0.0001 0.0001 0.00010.0010 0.0012 0.0012 0.0012 0.0012 0.0015

Bearing I.D. 1.9680 2.3616 2.1647 2.5585 2.9522 3.54251.9685 2.3622 2.1653 2.5591 2.9528 3.5433

Frame I.D. 3.5433 4.3307 3.9370 4.7244 5.1181 6.29923.5442 4.3316 3.9378 4.7253 5.1191 6.3002

Clearance 0.0000 0.0000 0.0000 0.0000 0.0000 0.00000.0015 0.0015 0.0015 1.0015 0.0017 0.0020

Bearing O.D. 3.5483 4.3307 3.9390 4.7244 5.1181 6.29923.5427 4.3301 3.9363 4.7238 5.1174 6.2982

Thrust(Outboard)

Shaft O.D. 1.9691 2.3628 2.1659 2.3628 2.5597 3.34721.9686 2.3623 2.1654 2.3623 2.5592 3.3466

Interference 0.0001 0.0001 0.0001 0.0001 0.0001 0.00010.0010 0.0012 0.0012 0.0012 0.0012 0.0015

Bearing I.D. 1.9680 2.3616 2.1647 2.3616 2.5585 3.34571.9685 2.3622 2.1653 2.3622 2.5591 3.3465

Frame I.D. 4.3307 5.1181 4.7244 5.1181 5.5118 7.08664.3315 5.1191 4.7253 5.1191 5.5128 7.0876

Clearance 0.0000 0.0000 0.0000 0.0000 0.0000 0.00000.0015 0.0017 0.0015 0.0017 0.0017 0.0020

Bearing O.D. 4.3307 5.1181 4.7244 5.1181 5.5118 7.08664.3301 5.1174 4.7238 5.1174 5.5111 7.0856

Table 6Minimum Running Clearances

Diameter of Impeller WearRing

Minimum Diame-tral Clearance

mm in. mm in.<50 <2.000 0.25 0.010

To to 64.99 2.000 to 2.4999 0.28 0.01165 to 79.99 2.500 to 2.999 0.30 0.012

80 to 89.99 3.000 to 3.499 0.33 0.013

90 to 99.99 3.500 to 3.999 0.35 0.014

100 to 114.99 4.000 to 4.499 0.38 0.015

115 to 124.99 4.500 to 4.999 0.40 0.016

125 to 149.99 5.000 to 5.999 0.43 0.017

150 to 174.99 6.000 to 6.999 0.45 0.018

175 to 199.99 7.000 to 7.999 0.48 0.019

200 to 224.99 8.000 to 8.999 0.50 0.020

225 to 249.99 9.000 to 9.999 0.53 0.021

250 to 274.99 10.000 to 10.999 0.55 0.022

275 to 299.99 10.000 to 11.999 0.58 0.023

300 to 324.99 12.000 to 12.999 0.60 0.024

NOTE: For operating temperatures above260° C (500° F) and for materials with greatergalling tendencies (e.g. stainless steel),increase diametral clearance dimensions by0.13 mm (.005 in.).

SEAL CHAMBER COVER (184)Seal chamber cover is available in two versions: one(optional) has a cooling chamber and water jacketcover (490) and the other (standard) does not. The(optional) cooled version is used when elevatedpumpage temperatures are present.

1. Ensure all gasekt/O-ring sealing surfaces areclean and have no damage that would hinder orprevent sealing (Fig. 31).

2. Ensure all cooling (where applicable), flush anddrain passages are clear.

3. Inspect other surfaces for damage. Replace ifworn, damaged or corroded more than 3.2 mm(1

8 in.) deep.

4. Measure inside diameter of seal chamber coverbushing (125). If the diametral clearancebetween it and the impeller hub (101) exceeds1.20 mm (.047 in.), one or both parts should bereplaced. Refer to Renewal of Wear Parts forreplacement instructions for seal chambercover bushing.

40 3700-8th IOM 12/04

Fig. 31

Fig. 30

Fig. 29

BEARING FRAME (228)1. Visually inspect bearing frame for damage and

cracks.

2. Check frame inside surfaces for rust, scale ordebris. Remove all loose and foreign material(Fig. 32).

3. Make sure all lubrication passages are clear.

4. Check bearing bores. If any are outside thetolerance in Table 5, replace the bearing frame.

CARTRIDGE MECHANICAL SEALRefer to mechanial seal manufacturer’s instructionsfor assistance.

Cartridge type mechanical seals should be servicedby seal manufacturer.

COUPLING GUARD1. Inspect guard for corrosion or other defects.

2. Replace guard or repair.

�! WARNINGTo avoid physical injury, coupling guard mustbe installed and must be maintained in first-class condition.

GASKETS, O-RINGS, SHIMS AND SEATSNOTE: Spiral wound gaskets should not bereused.

1. Replace all gaskets, O-rings and shims at eachoverhaul / disassembly.

2. Inspect seats. They must be smooth and free ofphysical defects. Skin cut seats in lathe asnecessary, maintaining dimensionalrelationships with other surfaces. Replaceparts if seats are defective beyond reasonablerepair.

GENERALAll other parts should be inspected and repaired orreplaced, as appropriate, if inspectin indicatescontinued use would be harmful to satisfactory andsafe pump operaiton.

Inspection must include, but not be limited to, thefollowing:

• Bearing End Covers (109A) and (119A)

• Deflectors (123) and (123A)

• Radial Heat Flinger (123B)*

• Thrust Deflector Fan (123E)*

• Bearing Locknut (136)

• Impeller Key (178) and Coupling Key

• Impeller Screw (198)

• Impeller Washer (199)

• Impeller Lockwasher (199A)

• Impeller Nut (304)

• Bearing Lockwasher (382)

• Water Jacket Cover (490)*

• All Nuts, Bolts and Screws

* If supplied.

3700-8th IOM 12/04 41

6

Fig. 32

RENEWAL OF WEAR PARTS

REPLACEMENT OF SEAL CHAMBERCOVER BUSHINGSeal chamber cover bushing (125) is held in place bya press fit and locked by three set screws.

Removal of Bushing (125)

1. Remove set screws.

2. Press bushing (125) out of fit toward bearingframe side of seal chamber cover (184) bore(Fig. 33).

Installation of Bushing (125)

1. Clean bushing fit in seal chamber cover (184)thoroughly.

2. Chill new bushing (125) using dry ice or othersuitable chilling substance, and install bushinginto fit of cover (184). Be prepared to tap thebushing in place with a hardwood block or softfaced hammer (Fig. 34).

�! WARNINGDry ice and other chilling substances cancause physical injury. Contact supplier forinformation and advice for proper handlingprecautions and procedures.

3. Locate, drill and tap three new set screw holeson impeller side of cover (184) equally spacedbetween original set screw holes.

4. Install set screws and upset threads.

REPLACEMENT OF WEAR RINGSCasing (164), impeller (202 and 203) and sealchamber cover wear rings (230) are held in place by apress fit and three set screws (222E and 320).

Removal of Wear Rings (164, 202, 203, 230)

1. Remove set screws (222E and 320).

2. Remove wear rings from casing (100), impeller(101), and seal chamber cover (184) usingsuitable pry or puller to force rings from fits.

Rings may also be machined for removal.

�! CAUTIONExcessive machining can damage ring fits andrender parts unusable.

Installation of Wear Rings (164, 202, 203, 230)

1. Clean wear ring seats thoroughly, insuring theyare smooth and free of scratches.

42 3700-8th IOM 12/04

Fig. 33

Fig. 34

Fig. 35

2. Heat new impeller wear rings (202 and 203) to82° - 93° C (180° - 200° F) using a uniformmethod for heating (e.g. - oven) and place onimpeller (101) wear ring seats (Fig. 35).

�! CAUTIONUse insulated gloves to handle rings. Ringswill be hot and can cause physical injury.

3. Chill new casing wear ring (164) using dry ice orother suitable chilling substance, and install ringinto fit of casing (100). Be prepared to tap thering in place with a hard wood block or softfaced hammer (Fig. 36).

�! WARNINGDry ice and other chilling substances cancause physical injury. Contact supplier forinformation and advice for proper handlingprecautions and procedures.

4. Chill new seal chamber cover wear ring (230),using dry ice or other suitable chillingsubstance, and install ring into fit of cover (184).Be prepared to tap the ring in place with ahardwood block or soft faced hammer (Fig. 37).

�! WARNINGDry ice and other chilling substances cancause physical injury. Contact supplier forinformation and advice for proper handlingprecautions and procedures.

5. Locate, drill and tap three new set screw holesequally spaced between the original holes ineach new ring and ring seat area.

6. Install set screws (222E and 320) and upsetthreads.

7. Check casing wear ring (164) runout / distortionby measuring bore at each set screw locationwith inside micrometers or vernier calipers(Fig. 38). Any distortion in excess of 0.08 mm(.003 in.) should be corrected by machiningprior to trimming new impeller wear rings (202and 203).

8. Measure bore of casing wear ring (164) toestablish the required impeller wear ring (202)diameter to provide the recommended runningclearances as indicated in Table 6 andsubsequent note.

9. Repeat steps 7 and 8 for the seal chamberwear ring (230).

3700-8th IOM 12/04 43

Fig. 36

Fig. 37

Fig. 38

10. Turn impeller wear rings (202 and 203) to sizeafter mounting on impeller (101).

NOTE A: All replacement impeller wear rings,except those hard faced, are supplied 0.51 mm(.020 in.) to 0.75 mm (.030 in.) oversize.

NOTE B: Spare hard faced impeller wear ringsare not supplied oversize but are supplied topre-established proper running clearanceswhen both impeller and casing wear rings arerenewed.

�! CAUTIONFor runout checks, firmly support bearing frameassembly in horizontal position, as shown inFig. 39.

11. Check impeller wear ring runout in the followingmanner:

a. Install impeller key (178) on shaft (122) ofassembled bearing frame from which the sealchamber cover (184) has been removed, andon which the runouts have been determinedto be within the specifications established inReassembly section. Key should be at top(12 o’clock) position for installation of impeller(101).

b. Install impeller (101) on shaft (122).

�! CAUTIONWhen handling the impeller, wear heavy workgloves to prevent cutting hands on sharpedges.

c. Install impeller washer (199).d. Secure impeller (101) firmly with impeller

screw (198) or impeller nut (304).

NOTE: Impeller screw has LEFT HAND threads.

e. Mount dial indicator as shown in Fig. 40.f. Rotate shaft (122) so indicator rides along the

casing side impeller wear ring (202) surfacefor 360 degrees.

g. Repeat steps e. and f. for seal chamber coverside wear ring (203).

If impeller wear ring (203 and 203) runout is in excessof 0.13 mm (.005 in.):

a. Check for distortion at set screw areas.

b. Check shaft (122) runout and all matingsurfaces of shaft and impeller (101) hub forperpendicularity.

c. True up all surfaces found damaged andrecheck impeller wear ring (202 and 203)runout.

44 3700-8th IOM 12/04

Fig. 39

Fig. 40

REASSEMBLY

Refer to Table 7 for torque values while reassembling pump.

3700-8th IOM 12/04 45

6

Table 7Maximum Torque Values for Model 3700 8th Edition Fasteners

Values in N-m (ft.-lb.)

ItemNumber Description

Group/Size

Construction - API DesignationNon-APIMaterial

S-1 S-3 S-4 S-5 S-6S-8

S-8N S-9 C-6A-8

A-8N D-1Modified

A-8

136 Bearing Locknut

SAMA

SX, MX, LALX

XLX

95 (70)122 (90)149 (110)190 (140)407 (300)

304 Impeller NutSA, SXMA, MX

LA, LX, XLX

145 (107)178 (131)287 (212)

353and355

Gland Studs & NutsSA

All others118 (87)235 (173)

365Aand425

Casing Studs & Nuts

SA, SXMA, MX

(9" & 11")MA, MX (13")LA, LX (13")LA, LX (16")LA, LX (19")

XLX, LX (21")

415 (306)

415 (306)671 (495)671 (495)1006 (742)1426 (1052)1426 (1052)

370HScrew - BearingFrame/Seal Chamber Cover

SA, MASX

MX, LALX

XLX

41 (30)80 (59)

142 (105)231 (170)346 (256)

370NScrew -Thrust BearingEnd Cover to Frame

SA, SXMA, MX, LA

LX, XLX

41 (30)41 (30)80 (59)

370P and370W

Optional

Screw -Radial BearingEnd Cover to Frame

SXMX, LA

LXXLX

9 (7)

469Q(Optional)

Screw -ThrustDeflector Fan GuardSupport

All 9 (7)

Pump to Base Bolts All 955 (705)

NOTE: The torque values specified in the above table are for dry threads. These values should be reduced for lubricated threads only when lubricantsof high stress ability (e.g. - Molycote) are used.

NOTE: Materials listed in the above table are equal to the respective API 610, 8th Edition material classes. In some cases, superior materials are substituted.

ASSEMBLY OF STANDARD RING OILOR OPTIONAL PURGE OIL MISTLUBRICATED POWER ENDThis section covers assembly of standard ring oil oroptional purge oil mist lubricated power end. Forpower ends with optional features (pure oil mistlubrication, bearing cooling, etc.), refer to theappropriate section.

▲! WARNINGPump components are heavy. Proper methodsof lifting and securing must be employed toavoid physical injury and/or equipment damage.

NOTE: Make sure that all parts and threads areclean and that all directions under Inspectionshave been followed.

1. Install radial (inboard) bearing (168) on shaft(122) (Fig. 41).

NOTE: There are several methods used toinstall bearings. The recommended method isto use an induction heater that heats as well asdemagnetizes the bearings.

�! CAUTIONUse insulated gloves when using a bearingheater. Bearing will get hot and can causephysical injury.

2. Install oil ring(s) (114) on shaft (122). SX, MX,LX, LA, and XLX pumps have two (2) oil rings.SA and MA pumps have one (1) oil ring.

3. Install thrust (outboard) bearings (112) onshaft (122).

�! CAUTIONThe Model 3700 8th Edition uses duplexbearings mounted back-to-back. Make sureorientation of the bearings is correct.

NOTE: There are several methods used toinstall bearings. The recommended method isto use an induction heater that heats as well asdemagnetizes the bearings.

�! CAUTIONUse insulated gloves when using a bearingheater. Bearings will get hot and can causephysical injury.

4. Place bearing lockwasher (382) on shaft (122).Place tang of lockwasher in keyway of shaft.

46 3700-8th IOM 12/04

Fig. 41

5. Thread bearing locknut (136) onto shaft (122).After bearings and shaft have cooled to ambienttemperature, tighten locknut to torque valueshown in Table 7.

6. Bend any tang of bearing lockwasher (382) intoa slot of locknut (136).

NOTE: Coat internal surfaces of bearings withlubricant to be used in service.

7. Install radial bearing end cover (119A), and newend cover gasket (360) on bearing frame (228)(Fig. 42). For SA and MA pumps, install newO-ring (497J) in bearing end cover (119A) andpress into bearing frame 228. Ensure that theend cover is evenly seated against the bearingframe (Fig. 42A).

8. For SX, MX, LA, LX, and XLX pumps, installand tighten radial end cover bolt/bearing framescrews (370P) evenly to the torque valuesshown on page 7. On SA and MA pumps thisstep is not required as the bearing end cover(119A) is pressed in place.

9. Coat outer races of bearings (112) and (168)with compatible oil.

10. Coat internal bearing surfaces of bearing frame(228) with compatible oil.

11. Position oil ring(s) (114) in groove(s) in shaft (122).

12. Carefully guide shaft/bearing assembly intobearing frame (228) until thrust bearing (112) isseated against shoulder of frame. Ensure oilrings (114) do not bind or become damaged(Fig. 43).

NOTE: Do not force assembly together.

3700-8th IOM 12/04 47

6

Fig. 43

Fig. 42A

Fig. 43A

Fig. 42

13. Observe oil rings (114) through inspectionconnections in bearing frame (228). If oil ringsare not properly seated in grooves in shaft(122), insert a hooked type tool fashioned fromwire through inspection connections.Reposition oil rings as necessary to seat ingrooves.

14. Check shaft (122) for free turning. If rubbing orbinding is detected, determine cause andcorrect.

15. Replace oil ring inspection connection plugs(113B).

16. Replace two (2) oil ring retainers (469P). Screwshould bottom against bearing frame (228).

17. For SX, MX, LX, LA, and XLX pumps, installthree (3) thrust bearing end cover shims (390C)on the thrust bearing end cover (109A) andalign holes. For SA and MA pumps, installthree (3) thrust bearing end cover gaskets(360A) on the bearing end cover (109A). Alignthe gasket to the end cover so that the openingsin the gaskets align with the oil grooves on theend cover (Fig. 43B).

�! CAUTIONFailure to align gasket with oil grooves willresult in bearing failure from lack of lubrication.

18. Install thrust bearing end cover (109A) overshaft (122) and onto bearing frame (228).

19. Install and tighten thrust bearing endcover/bearing frame screws (370N) evenly totorque valves shown in Table 7.

�! CAUTIONDo not over tighten thrust bearing endcover/bearing frame screws.

20. Determine axial end play as follows:a. Mount dial indicator as shown in Fig. 44.b. Apply axial force to impeller end of shaft (122)

and firmly seat thrust bearing (112) againstshoulder in bearing frame (228).

c. Apply axial force in opposite direction andfirmly seat thrust bearing (112) against thrustbearing end cover (109A).

d. Repeat steps b and c several times andrecord total travel (end play) of rotatingelement.

e. Total travel (end play) must fall in the range of0.025 to 0.125 mm (0.001 to 0.005 inches).

21. The axial end play is achieved by adding orremoving end cover gaskets (360C) for SA andMA pumps or end cover shims (390C) betweenthe thrust bearing end cover (109A) and thebearing frame (228). Add gaskets/shims if noaxial end play is present.

22. Repeat steps 17 - 20. Total travel (end play)should fall in the range of 0.025 - 0.125 mm(.001 - .005 in.). If the measured total travelfalls outside this range, remove or add theappropriate quantity of individual shims toobtain the proper total travel. For SA and MApumps, skip steps 23 through 26.

23. Remove thrust bearing end cover (109A).

24. Install O-ring (412, not shown) into groove inthrust bearing end cover (109A).

25. Lubricate O-ring (412) with a suitable lubricant.

48 3700-8th IOM 12/04

Fig. 44

Fig. 43B

26. Install thrust bearing end cover (109A) withO-ring (412) over shaft (122) and into bore ofbearing frame (228). Ensure that O-ring is notdamaged while entering bore in frame.

27. Install and tighten thrust bearing endcover/bearing frame screws (370N) evenly totorque values shown in Table 7.

�! CAUTIONDo not over tighten thrust bearing end cover /bearing frame screws.

28. Check shaft (122) for free turning. If rubbing orexcessive drag is detected, determine causeand correct.

29. Install thrust bearing deflector (123A) overshaft (122). For SA and MA pumps, install newdeflector O-ring (497H) before placing deflectoron shaft (Fig. 43 or 43A).

30. Position thrust bearing deflector (123A)approximately 0.8 mm (.030 in.) away fromthrust bearing end cover (109A) and tightendeflector set screw (222) firmly. For SA and MApumps, use an O-ring (497H) to hold deflectorin place. No set screw is present.

31. Install radial bearing deflector (123) over shaft(122) (Fig. 45 or 45A). For SA and MA pumps,install new deflector O-ring (497H) beforeplacing deflector on shaft.

32. Position deflector (123) approximately 0.8 mm(.030 in.) away from radial bearing end cover(119A) and tighten deflector set screw (222)firmly. SA and MA pumps use an O-ring (497H)to hold deflector in place. No set screw ispresent.

�! CAUTIONFor runout checks, firmly support bearingframe assembly in horizontal position, asshown in Fig. 39.

33. Check shaft (122) impeller fit runout in thefollowing manner:

a. Mount dial indicator on bearing frame (228)as shown in Fig. 46.

b. Rotate shaft (122) through maximum arc fromone side of keyway to the other. If totalindicator reading is greater than 0.050 mm(.002 in.), determine cause and correct.

�! CAUTIONAvoid turning shaft so that dial indicatorcontacts keyway. Readings will be incorrectand damage to dial indicator could result.

3700-8th IOM 12/04 49

6

Fig. 45A

Fig. 45

Fig. 46

34. Check shaft (122) seal fit runout in the followingmanner:

a. Mount dial indicator as shown in Fig. 47.b. Rotate shaft (122) so indicator rides along

shaft surface for 360 degrees. If totalindicator reading is greater than 0.050 mm(.002 in), determine cause and correct.

35. Check bearing frame (228) face runout in thefollowing manner:

a. Mount dial indicator on shaft (122) as shownin Fig. 48.

b. Rotate shaft (122) so indicator rides along thebearing frame (228) face for 360 degrees. Iftotal indicator reading is greater than 0.10 mm(.004 in), disassemble and determine cause.

36. Check bearing frame (228) lock runout in thefollowing manner:

a. Mount dial indicator on shaft (122) as shownin Fig. 49.

b. Rotate shaft (122) so indicator rides along thebearing frame (228) lock for 360 degrees. Iftotal indicator reading is greater than 0.10 mm(.004 in.), disassemble and determine cause.

37. Install and tighten any plugs and/or fittingsremoved during disassembly, including oil drainplug (408A), bullseye sight glass, etc.

50 3700-8th IOM 12/04

Fig. 47

Fig. 48

Fig. 49

ASSEMBLY OF OPTIONAL PURE OIL MISTLUBRICATED POWER ENDPure oil mist lubricated power ends are assembled in thesame manner as ring oil lubricated power ends. Oil rings(114) are not furnished with pure oil mist lubrication. Anyreference to those parts may be ignored.

ASSEMBLY OF POWER END WITHOPTIONAL RADIAL HEAT FLINGERRadial bearing end cover screws change from (370P)to (370W) (Not applicable to SA and MA pumps). Theradial heat flinger (123B) replaces the standard radialdeflector (123) and is installed in the same manner.Remainder of assembly is the same as ring oillubrication. For SA and MA pumps, the O-ring (497H)is replaced by a set screw (222).

ASSEMBLY OF POWER END WITHOPTIONAL AIR COOLING PACKAGEAssemble power end as described in steps 1-26 ofring oil lubrication section. Note that in step 8, radialbearing end cover screws change from (370P) to(370W) (Fig. 50) (Not applicable to SA and MApumps).

27. Position thrust deflector fan guard support(234D) on thrust bearing end cover (109A).

28. Install and tighten thrust bearing endcover/bearing frame screws (370N) evenly totorque values shown in Table 7.

�! CAUTIONDo not over tighten thrust bearing end cover /bearing frame screws.

29. Install thrust deflector fan (123E) over shaft(122).

30. Position thrust deflector fan (123E)approximately 0.8 mm (.030 in.) from thrustbearing end cover (109A) and tighten deflectorfan set screw (222) firmly.

31. Install radial heat flinger (123B) over shaft.

32. Position heat flinger (123B) approximately 0.8 mm(.030 in) away from radial bearing end cover(119A) and tighten heat flinger set screw (222)firmly.)

Complete assembly of power end as described insteps 33-37 of ring oil lubrication section.

3700-8th IOM 12/04 51

6

Fig. 50

ASSEMBLY OF POWER END WITHOPTIONAL WATER COOLINGAssemble power end as described in ring oil lubricationsection. Once complete, install the finned tube coolingassembly (494) into the bearing frame (228).

INSTALLATION OF OPTIONAL WATERJACKET COVER1. Install outer and inner water jacket cover

O-rings (412S and 497T, respectively) intogrooves in water jacket cover (490) (Fig. 51).

2. Lubricate sealing surfaces in seal chambercover (184) and O-rings (412S and 497T) withsuitable lubricant.

3. Insert water jacket cover (490) with O-rings(412S and 497T) into fit in seal chamber cover(184). Ensure that water jacket cover entersuniformly and that O-rings are not damaged.

PRELIMINARY INSTALLATION OF SEALCHAMBER COVER1. Install eyebolt in tapped hole provided in seal

chamber cover (184) (Fig. 52).

2. Rig sling to eyebolt and to overhead liftingdevice.

3. Lift seal chamber cover (184) and position toalign with shaft (122).

4. Install seal chamber cover (184) on bearingframe assembly by guiding cover carefully overshaft (122) and into bearing frame (228) lock.

5. Install seal chamber cover/bearing frame bolts(370H) and tighten evenly using alternatingpattern. Torque bolts to values shown in Table 7.

�! CAUTIONFor runout checks, firmly support bearingframe assembly in horizontal position, asshown in Fig. 39.

6. Check seal chamber cover (184) face runout inthe following manner:

a. Mount dial indicator on shaft (122) as shownin Fig. 53.

b. Rotate shaft (122) so indicator rides along theseal chamber cover (184) gasket face for 360degrees. If total indicator reading is greater than0.13 mm (.005 in.), determine cause and correct.

52 3700-8th IOM 12/04

Fig. 51

Fig. 52

Fig. 53

7. Check seal chamber cover (184) lock runout inthe following manner:

a. Mount dial indicator on shaft (122) as shownin Fig. 54.

b. Rotate shaft (122) so indicator rides along theseal chamber cover (184) lock for 360 degrees.If total indicator reading is greater than 0.13 mm(.005 in.), determine cause and correct.

NOTE: If two dial indicators are available, steps6 and 7 may be performed simultaneously.

8. Check seal chamber cover wear ring (230)runout in the following manner:

a. Mount dial indicator on shaft (122) as shownin Fig. 55.

b. Rotate shaft (122) so indicator rides on sealchamber cover wear ring (230) surface for360 degrees. If total indicator readingexceeds 0.15 mm (.006 in.), determine causeand correct.

9. Check seal chamber face runout in thefollowing manner:

a. Mount dial indicator on shaft (122) as shownin Fig. 56.

b. Rotate shaft (122) so indicator rides along theseal chamber face for 360 degrees. If totalindicator reading is greater than the valuesshown in Table 8, determine cause and correct.

Table 8Maximum Allowable Seal Chamber

Face RunoutGroup Maximum Allowable Total Indicator Reading

SA 0.045 mm (0.0018 in.)

SX, MA 0.05 mm. (.002 in.)

MX, LA 0.06 mm. (.0024 in.)

LX 0.065 mm. (.0026 in.)

XLX 0.07 mm. (.0028 in.)

3700-8th IOM 12/04 53

6

Fig. 55

Fig. 54

Fig. 56

10. Check seal chamber lock (register) runout in thefollowing manner:

a. Mount dial indicator on shaft (122) or shaftsleeve (126) as shown in Fig. 57.

b. Rotate shaft (122) so indicator rides along theseal chamber lock (register) for 360 degrees.If total indicator reading is greater than0.125 mm (.005 in.), determine cause andcorrect.

11. Install impeller key (178) in keyway of shaft(122). Key should be at top (12 o’clock)position for installation of impeller (101).

12. Install impeller (101) on shaft (122).

�! CAUTIONWhen handling impeller, wear heavy workgloves to prevent cutting hands on sharpedges.

NOTE: Anti-galling compound should beapplied to the impeller bore to aid in assemblyand disassembly.

13. Install impeller nut (304) and tighten firmly.

NOTE: Impeller nut has LEFT HAND threads.

�! CAUTIONFor runout checks, firmly support bearingframe assembly in horizontal position, asshown in Fig. 39.

14. Check impeller (101) impeller wear ring (202)runout in the following manner:

a. Mount dial indicator as shown in Fig. 58.

b. Rotate shaft (122) so indicator rides alongwear ring (202) surface for 360 degrees. Iftotal indicator reading is greater than 0.13 mm(.005 in.), determine cause and correct.

INSTALLATION OF CARTRIDGE TYPEMECHANICAL SEAL ANDSEAL CHAMBER COVER

NOTE: Refer to mechanical seal manufacturer’sdrawings and instructions for assistance duringinstallation of mechanical seal.

1. Loosen and remove impeller nut (304).

NOTE: Impeller nut has LEFT HAND threads.

2. Remove impeller (101), impeller key (178), andseal chamber cover (184) as described indisassembly.

3. Lubricate all O-rings with suitable lubricant, unlessseal manufacturer’s instructions indicateotherwise.

4. Slide cartridge seal assembly (rotary,stationary, gland, gland gasket and sleeve) ontoshaft (122) (Fig. 59).

NOTE: Ensure that mechanical seal glandpiping connections are properly oriented.

54 3700-8th IOM 12/04

Fig. 58

Fig. 57

Fig. 59

5. Install bearing frame/seal chamber cover gasket(540C) into recess on bearing frame (228) andalign holes.

6. Rig sling to eyebolt and to overhead liftingdevice.

7. Lift seal chamber cover (184) and position toalign with shaft (122).

8. Install seal chamber cover (184) on power end byguiding cover carefully over cartridge seal rotaryand ensuring that gland studs (353) smoothlyenter holes in cartridge seal gland and that coverpilots into bearing frame (228) lock. Assure thatbearing frame/seal chamber cover gasket (540C)is not dislodged and/or damaged.

�! CAUTIONMechanical seal parts may be damaged if theyor adjacent parts are handled improperly.

9. Install seal chamber cover/bearing frame bolts(370H) and tighten using alternating pattern.Torque bolts to values shown in Table 7.

10. Install gland stud nuts (355) and tighten evenlyto torque values shown in Table 7.

11. Tighten set screws in locking collar.

12. Disengage spacer ring or clips.

13. Check for free turning. If rubbing or excessivedrag is detected, determine cause and correct.

INSTALLATION OF IMPELLER

NOTE: It is desirable to repeat runout checks onseal chamber cover face, lock and wear ringsurfaces as previously described in “PreliminaryInstallation of Seal Chamber Cover”.

1. Install impeller key (178) in keyway of shaft(122). Key should be at top (12 o’clock)position for installation of impeller (101).

�! CAUTIONWhen handling impeller, wear heavy workgloves to prevent cutting hands on sharpedges.

2. Install impeller (101) on shaft (122).

NOTE: Anti-galling compound should beapplied to the impeller bore to aid in assemblyand disassembly.

3. Install impeller nut (304) and tighten to torquevalues shown in Table 7.

NOTE: Impeller nut has LEFT HAND threads.

4. Tighten the set screw (198A) in the end of theimpeller nut (304).

5. Check for free turning. If rubbing or excessivedrag is detected, determine cause and correct.

NOTE: It is desirable to repeat runout check onimpeller wear ring surface as previouslydescribed in “Replacement of Wear Rings.”

INSTALLATION OF COUPLING HUBInstall key and pump half coupling hub on shaft (122)until hub is flush with end of shaft or to scribe markdetermined during disassembly (Fig. 60). Refer tocoupling manufacturer’s instructions for assistance.

NOTE: If it is necessary to heat the couplinghub due to interference fit, do NOT use a torch.Use a heating device (oven, etc.) which willheat the coupling hub uniformly.

�! CAUTIONUse insulated gloves to handle coupling hub.Coupling hub will get hot and can causephysical injury.

3700-8th IOM 12/04 55

6

Fig. 60

INSTALLATION OF BACK PULL-OUTASSEMBLY IN CASING1. Install new casing gasket (351) on gasket

surface of casing (100).

NOTE: Anti-galling compound may be applied tothe casing fits to aid in assembly and disassembly.

2. Replace back pull-out assembly in casing (100)using lifting sling through bearing frame or othersuitable means (Fig. 61).

3. Slide back pull-out assembly into proper positionin casing (100) by loosening jacking bolts (418)evenly.

NOTE: Ensure that casing gasket is notdamaged.

4. Install casing stud nuts (425).

5. Inspect gap between seal chamber cover (184)and casing (100) and adjust casing stud nuts (425)as necessary to make gap uniform.

6. Tighten casing stud nuts (425) uniformly, usingalternating pattern, until seal chamber cover(184) is in metal-to-metal contact with thecasing (100). Tighten each nut to torque valueshown in Table 7.

7. Check for free turning. If rubbing or excessivedrag is detected, determine cause and correct.

ADDITIONAL ASSEMBLY1. Replace coupling spacer, coupling guard and

auxiliary piping, tubing and equipment that wereremoved during preparation for disassembly.

2. Lubricate bearings as described in PreventiveMaintenance section.

56 3700-8th IOM 12/04

Fig. 61

ASSEMBLY TROUBLESHOOTING

3700-8th IOM 12/04 57

6

Symptom Probable Cause Remedy

Excessive shaft end play.

Bearing internal clearance too great. Replace bearings with correct type.

Excessive thrust bearing end cover shim packthickness.

Remove individual shims to obtain properthickness.

Thrust bearing end cover loose. Tighten screws.

Excessive shaft runout. Shaft bent. Replace.

Excessive bearing frame flange runout.Shaft bent. Replace.

Bearing frame flange distorted. Replace.

Excessive seal chamber cover runout.Seal chamber cover not properly seated on frame. Replace or remachine.

Corrosion or wear. Replace or remachine.

Excessive impeller wear ring runout.Bent shaft. Replace.

Improper machining of wear ring. Replace or remachine.

58 3700-8th IOM 12/04

PARTS LIST WITH STANDARD MATERIALS OF CONSTRUCTIONMaterials shown are typical. Refer to order documentation for actual materials furnished.

Item Part Name

Qtyper

Pump

Construction - API Designation

S-4 S-6 S-8 C-6 A-8

100 Casing 1 1212 1234 1296

101 Impeller 1 1212 1222 1265 1222 1265

109A Thrust Bearing End Cover 1 1212

112 Ball Bearing, Thrust 1 pair Steel

114 Oil ring SA, MA frames 1 1618

114 Oil ring, SX, MX, LA, LX, XLX Frames 2 1618

119A Radial Bearing End Cover 1 Steel

122 Shaft 1 2238 2256 2244 2256

123 Deflector, Radial 1 1618

123A. Deflector, Thrust 1 1618

123B Deflector, Fan, Radial 1 1425

123C Deflector, Fan Thrust 1 1425

125 Throat Bushing, Seal Chamber 1 1001 2244 2256 2244 2256

136 Locknut, bearing 1 Steel

164 Wear Ring, Casing 1 1001 1232 1265 1232 1265

168 Ball Bearing, Radial 1 Steel

178 Key, Impeller 1 2229 2224 2229

184 Seal Chamber Cover 1 1212 1234 1296

198A Set Screw, Impeller Nut 1 2229

202 Wear Ring, Impeller 1 1001 1299 1071 1299 1071

203 Wear Ring, Impeller 1 1001 1299 1071 1299 1071

222 Set Screw, deflector 2 2229

222E Set Screw, stationary wear rings 6 2229

228 Bearing Frame 1 1212

230 Wear Ring, Seal Chamber Cover 1 1001 1232 1265 1232 1265

234 Deflector Fan Guard 1 3201

234D Support, Deflector Fan Guard 1 3201

304 Impeller Nut 1 2210 2229

320 Set Screw, Impeller Wear Ring 6 2229

351 Gasket, Casing 1 Spiral Wound 316 Stainless Steel

353 Stud, Gland 4 2239

355 Nut, Gland Stud 4 2285

356A Stud, Casing Var. 2239

360 Gasket, Radial Bearing End Cover 1 Vellumoid

360A Gastket, Thrust Bearing End Cover 3 Vellumoid

370H Screw, Bearing Frame/ Seal Chamber Cover 4 2210

370N Screw, Thrust Bearing End Cover 5 2210

370P Screw, Radial Bearing End Cover 5 2210

382 Lockwasher, Bearing 1 Steel

390C Shim Pack, Thrust Bearing End Cover 1 304SS

408A Plug, Oil Drain 1 Steel with magnetic insert

412 O-ring, Thrust Bearing End Cover 1 Buna N

418 Bolt, Jacking 4 2210

425 Nut, Casing Stud Var. 2239

469P Retainer, Oil Ring 2 2285

494 Finned Tube Cooling Assembly 1 Stainless steel with copper fins

497F O-ring, Thrust Deflector 1 Buna N

497H O-ring, Radial Deflector 1 Buna N

497S O-ring, Radial End Cover 1 Buna N

540C Gasket, Frame/Seal Chamber Cover 1 Aramid Fiber

3700-8th IOM 12/04 59

6

Materials Cross Reference Chart

MaterialGoulds PumpsMaterial Code

ASTMMaterial Designation Other

Cast Iron 1000 A48 Class 25

Cast Iron 1001 A48 Class 20

Nitronic 60 1071 A743 Gr. CF10SMnN

Carbon Steel 1212 A216 WCB

12% Chrome Steel 1222 A743 Gr. CA6NM

12% Chrome Steel 1232 A743 Gr. CA15

12% Chrome Steel 1234 A487 Gr. CA6MN Class A

316L Stainless Steel 1265 A743 Gr. CF3M

316L Stainless Steel 1296 A351 Gr. CF3M

12% Chrome Steel 1299 A743 Gr. CA15

Aluminum 1425 SC64D UNS A03190

Bismuth Bronze 1618 B505 CDA 89320

Steel 2210 A108 Gr. 1211 UNS G12110

316 Stainless Steel 2229 A276 Type 316

4140 Steel 2238 A434 Gr. 4140 Class BD

4140 Steel 2239 A193 Gr. B7

410 Stainless Steel 2244 A276 Type 410 UNS S41000

316L Stainless Steel 2256 A276 Type 316L UNS S31603

4140 Steel 2285 A194 Gr. 2H

Steel 3201 A283 Grade D

316L Stainless Steel 3223 A240 Type 316L

FASTENERS/PLUGSMaterial Goulds Pumps Material Code ASTM

Carbon Steel 2210 A307 Grade B

Monel 6162 F468 Alloy 500

316SS 2229 F593 Alloy Group 2

4140 Steel 2239 A193 Grade B7

316LSS 2256 A193 Grade B8MLN

4140 Steel 2285 A194 Grade 2 H

60 3700-8th IOM 12/04

Model SX, MX, LA, LX, and XLX Pumps

3700-8th IOM 12/04 61

62 3700-8th IOM 12/04

Model 3700 SA and MA Pumps

3700-8th IOM 12/04 63

64 3700-8th IOM 12/04

SPARE PARTS

RECOMMENDED SPARE PARTS . . . . . . . . . . . . . . . . . . . . . . 65

When ordering spare parts, always state Goulds serial number, and indicate part name anditem number from relevant sectional drawing. It is imperative for service reliability to have asufficient stock of readily available spares.

RECOMMENDED SPARE PARTS

It is suggested that the following spare parts be stocked, where applicable:

• Thrust Bearing (Duplex Pair) (112)

• Oil Rings (114)

• Throat Bushing - Seal Chamber Cover (125)

• Bearing Locknut (136)

• Casing Wear Ring (164)

• Radial Bearing (168)

• Impeller Wear Ring - Casing Side (202)

• Impeller Wear Ring - Cover Side (203)

• Set Screws (222E and 320)

• Seal Chamber Cover Wear Ring (230)

• Oiler with Wire Guard (251)

• Impeller Nut (304)

• Casing Gasket (351)

• Radial Bearing End Cover Gasket (360)

• Thrust Bearing End Cover Gaskets (360A)

• Bearing Lockwasher (382)

• Cartridge Mechanical Seal (383)

• Thrust Bearing End Cover Shim Pack (390C)

• Thrust Bearing End Cover O-ring (412)

• Radial Bearing End Cover O-ring (497J)

• Water Jacket Cover O-rings (412S and 497T)

• Finned Tube Cooling Assembly (494)

• Frame/Seal Chamber Cover Gasket (540C)

For critical services, the following parts should also be stocked, where applicable:

• Impeller (101) with Impeller Rings (202 and 203)

• Thrust Bearing End Cover (109A)

• Radial Bearing End Cover (119A)

• Shaft (122)

• Radial Deflector (123)

• Thrust Deflector (123A)

• Radial Deflector Fan (123B)

• Thrust Deflector Fan (123E)

• Impeller Key (178)

• Radial and Thrust Deflector O-rings (497F & 497H)

An alternative approach is to stock a complete back pull-out assembly. This is a group ofassembled parts which includes all but the casing and coupling.

3700-8th IOM 12/04 65

7

66 3700-8th IOM 12/04

APPENDIX I-AAPPENDIX I- Installation and Disassembly Instructions for Goulds ANSI B15.1

Coupling GuardsA — All Power Ends Except Those with Optional Air Cooling Package . . . 67B — Power Ends with Optional Air Cooling Package . . . . . . . . . . . . . 71

APPENDIX II - Dial Indicator (Rim-and-Face) Alignment Procedure . . . . . . . 75

INSTALLATION AND DISASSEMBLY INSTRUCTIONS FORGOULDS ANSI B15.1 COUPLING GUARDS

All Power Ends Except Those withOptional Air Cooling Package

�! WARNINGBefore installation or disassembly of the couplingguard is performed, the driver must bede-energized, the driver controller / starter put in alocked-out position and a caution tag placed at thecontroller / starter indicating the disconnect.Replace coupling guard before resuming normaloperation of the pump. ITT Industries - GouldsPumps assumes no liability for avoiding thispractice.

Simplicity of design allows complete assembly of thecoupling guard, including the end plate (pump end), inabout fifteen minutes. If the end plate is already in place,assembly can be accomplished in about five minutes.Fig. I-A-1 shows the coupling guard components.

INSTALLATION

NOTE: If end plate (pump end) is alreadyinstalled, make any necessary couplingadjustments and then proceed to Step 7.

1. Remove spacer portion of coupling. Refer tocoupling manufacturer’s instructions for assistance.

2. If the coupling hub diameter is larger than thediameter of the opening in the end plate (234B),remove the coupling hub.

3. Remove three thrust bearing end cover/bearingframe screws (370N) as indicated in Fig. I-A-2.

4. Align the end plate (234B) to the thrust bearingend cover (109A) so that the two slots in the endplate align with the bolts remaining in the endcover, and the three holes in the end plate alignwith the holes in the end cover.

5. Replace the three thrust bearing end cover /bearing frame bolts (370N) and torque to valuesshown in Table 7.

3700-8th IOM 12/04 67

7

Fig. I-A-1

Fig. I-A-2

6. Replace coupling hub (if removed) and spacerportion of coupling. Refer to couplingmanufacturer’s instructions for assistance.

NOTE: Coupling adjustments should becompleted before proceeding with couplingguard assembly.

7. Spread opening of coupling guard half (501B)slightly and place over pump end plate (234B) asshown in Fig. I-A-3.

The annular groove in the guard is located around theend plate as indicated in Fig. I-A-4.

NOTE: Locate opening (flange) so that it willnot interfere with piping but will allow accessfor installing bolts (Step 8).

8. Place one washer over bolt and insert bolt throughround hole at front end of guard half (501B).

9. Place a second washer over exposed end of bolt.

10. Thread nut onto exposed end of bolt and tighten firmly.

The proper sequence of components is shown inFig. I-A-5; an assembled unit is shown in Fig. I-A-6.

11. Spread opening of remaining coupling guard half(501B) slightly and place over installed couplingguard half so that annular groove in remainingcoupling guard half faces the driver as indicatedin Fig. I-A-7.

68 3700-8th IOM 12/04

Fig. I-A-4

Fig. I-A-3

Fig. I-A-6

Fig. I-A-5

Fig. I-A-7

12. Place end plate (234A) over driver shaft asindicated in Fig. I-A-8. Locate the end plate in theannular groove at the rear of the coupling guardhalf (501B).

13. Repeat steps 8-10 for rear end of coupling guardhalf (501B), except that nut should be fingertightened only.

14. Adjust length of coupling guard to completely covershafts and coupling as shown in Fig. I-A-9 by slidingrear coupling guard half (501B) towards motor.

15. Repeat steps 8-10 for center slots in coupling guard.

16. Tighten all nuts on the guard assembly firmly.

DISASSEMBLYThe coupling guard must be removed for certainmaintenance and adjustments to the pump, such asadjustment of the coupling. The coupling guardshould be replaced after maintenance is completed.

�! WARNINGBefore assembly or disassembly of the couplingguard is performed, the driver must bede-energized, the driver controller / starter put in alocked-out position and a caution tag placed at thecontroller / starter indicating the disconnect.Replace coupling guard before resuming normaloperation of the pump. ITT Industries - GouldsPumps assumes no liability for avoiding thispractice.

�! WARNINGDO NOT resume normal pump operation withthe coupling guard removed.

1. Remove nut, bolt, and washers from centerslotted hole in the coupling guard assembly.

2. Slide driver end coupling guard half (501B)towards pump (Fig. I-A-9).

3. Remove nut, bolt, and washers from drivercoupling guard half (501B).

4. Remove driver end plate (234A) (Fig. I-A-8).

5. Spread opening of driver coupling guard half(501B) slightly and lift over remaining couplingguard half (Fig. I-A-7).

6. Remove nut, bolt, and washers from remainingcoupling guard half (501B).

7. Spread bottom of coupling guard half slightly andlift off pump end plate (234B) (Fig. I-A-3).

This completes disassembly of the coupling guard.

NOTE: It is not necessary to remove the endplate (pump end) from the pump bearing frame.Before removing other components, refer toDisassembly section of this manual.

3700-8th IOM 12/04 69

8

Fig. I-A-9

Fig. I-A-8

70 3700-8th IOM 12/04

APPENDIX I-BINSTALLATION AND DISASSEMBLY INSTRUCTIONS FOR

GOULDS ANSI B15.1 COUPLING GUARDS

Power Ends with OptionalAir Cooling Package

�! WARNINGBefore installation or disassembly of thecoupling guard is performed, the driver must bede-energized, the driver controller / starter putin a locked-out position and a caution tagplaced at the controller / starter indicating thedisconnect. Replace coupling guard beforeresuming normal operation of the pump. ITTIndustries - Goulds Pumps assumes no liabilityfor avoiding this practice.

Simplicity of design allows complete assembly of thecoupling guard, including the thrust end deflector fanguard support, in about twenty minutes. If the guardsupport is already in place, assembly can beaccomplished in about ten minutes. Fig. I-B-1 showsthe coupling guard components.

INSTALLATIONNOTE: If deflector fan guard support is alreadyinstalled, make any necessary couplingadjustments and then proceed to step 11.

1. Remove spacer portion of coupling. Refer tocoupling manufacturer’s instruction forassistance.

2. If the coupling hub diameter is larger than thediameter of the opening in the deflector fan guardsupport (234D), remove the coupling hub.

3. Loosen thrust deflector fan set screw (222)

3700-8th IOM 12/04 71

8

Fig. I-B-1

Fig. I-B-2

(Fig. I-B-2).

4. Slide thrust deflector fan (123E) off shaft (122).

5 Remove thrust bearing end cover/bearing framescrews (370N) (Fig. I-B-3).

6. Align the thrust deflector fan guard support (234D)to the thrust bearing end cover (109A) so that theslots in the support align with the holes in the endcover.

7. Replace the thrust bearing end cover/bearingframe screws (370N) and torque to values shownin Table 7.

�! CAUTION

Do not over tighten thrust bearing end cover/bearing frame screws.

8. Install thrust deflector fan (123E) over shaft (Fig.I-B-2).

9. Position thrust deflector fan (123E) approximately0.8 mm (.030 in.) from thrust bearing end cover(109A) and tighten deflector set screw (222)firmly.

10. Slide thrust deflector fan guard (234) over guardsupport (234D) and align holes in guard withtapped holes in guard support (Fig. I-B-4).

11. Install thrust deflector fan guard/support screws(469Q) and tighten to value shown in Table 7.

12. Replace coupling hub (if removed) and spacerportion of coupling. Refer to couplingmanufacturer’s instructions for assistance.

NOTE: Coupling adjustments should becompleted before proceeding with couplingguard assembly.

13. Spread opening of coupling guard half (501B)slightly and place over thrust deflector fan guard(234) so that annular groove in guard half locatesaround guard support extension (Fig. I-B-5 andI-B-6).

NOTE: Locate opening (flange) so that it willnot interfere with piping but will allow accessfor installing bolts (Step 14).

72 3700-8th IOM 12/04

Fig. I-B-4

Fig. I-B-5

Fig. I-B-6

Fig. I-B-3

14. Place one washer over bolt and insert boltthrough round hole at front end of guard half(501B).

15. Place a second washer over exposed end of boltand tighten firmly.

16. Thread nut onto exposed end of bolt and tightenfirmly.

The proper sequence of components is shown inFig. I-B-7; an assembled unit is shown in Fig. I-B-8.

17. Spread opening of remaining coupling guard half(501B) slightly and place over installed couplingguard half so that annular groove in remainingcoupling guard half faces the driver (Fig. I-B-9).

18. Place end plate (234A) over driver shaft(Fig. I-B-10). Locate the end plate in the annulargroove at the rear of the coupling guard half (501B).

19. Repeat steps 14-16 for rear end of coupling guardhalf (501B), except that nut should be fingertightened only.

3700-8th IOM 12/04 73

8

Fig. I-B-9

Fig. I-B-10

Fig. I-B-8

Fig. I-B-7

20. Adjust length of coupling guard to completelycover shafts and coupling as shown in Fig. I-B-11by sliding rear coupling guard half (501B) towardsmotor.

21. Repeat steps 14-16 for center slots in couplingguards.

22. Tighten all nuts on the guard assembly firmly.

DISASSEMBLYThe coupling guard must be removed for certainmaintenance and adjustments to the pump, such asadjustment of the coupling. The coupling guardshould be replaced after maintenance is completed.

�! WARNINGBefore assembly or disassembly of thecoupling guard is performed, the driver must bede-energized, the driver controller / starter putin a locked-out position and a caution tagplaced at the controller / starter indicating thedisconnect. Replace coupling guard beforeresuming normal operation of the pump. ITTIndustries - Goulds Pumps assumes no liabilityfor avoiding this practice.

�! WARNINGDO NOT resume normal pump operation withthe coupling guard removed.

1. Remove nut, bolt and washers from center slottedhole in the coupling guard assembly.

2. Slide driver end coupling guard half (501B)towards pump (Fig. I-B-11).

3. Remove nut, bolt and washers from drivercoupling guard half (501B).

4. Remover driver end plate (234A) (Fig. I-B-10).

5. Spread opening of driver coupling guard half(501B) slightly and lift over remaining couplingguard half (Fig. I-B-9).

6. Remove nut, bolt and washers from remainingcoupling guard half (501B).

7. Spread bottom of coupling guard half slightly andlift off pump end plate (234B) (Fig. I-B-5).

This completes disassembly of the coupling guard.

NOTE: It is not necessary to remove the thrustdeflector fan guard from the pump bearingframe. Before removing other components,refer to Disassembly section of this manual.

74 3700-8th IOM 12/04

Fig. I-B-11

APPENDIX IIDIAL INDICATOR (RIM-AND-FACE) ALIGNMENT PROCEDURE

Appendix II details the procedure to be followed whenusing the dial indicator (rim-and-face) method ofaligning pump and motor shafts.

Other alignment methods (reverse dial indicator, laser)are acceptable. Maximum allowable misalignment criteriafor these methods is shown in Table 1.

Good alignment is achieved when the dial indicatorreadings as specified in this alignment procedure areequal to 0.05 mm (.002 in.) Total Indicator Reading(T.I.R.) or less when the pump and driver are atoperating temperature (Final Alignment).

SET UP1. Mount two dial indicators on the pump coupling half

X so they contact the driver coupling half Y (Fig.II-A).

2. Check setting of indicators by rotating couplinghalf X to ensure indicators stay in contact withcoupling half Y but do not bottom out. Adjustindicators accordingly.

MEASUREMENTTo ensure accuracy of indicator readings:

1. Always rotate both coupling halves together soindicators contact the same point on coupling halfY. This will eliminate any measurement problemsdue to runout on coupling half Y.

2. Take indicator measurements with driver foothold-down bolts tightened. Loosen hold-downbolts prior to making alignment corrections.

3. Take care not to damage indicators when movingdriver during alignment corrections.

ANGULAR ALIGNMENTA unit is in angular alignment when indicator A(angular indicator) does not vary by more than 0.05mm (.002 in.) as measured at four points 90° apart atoperating temperature.

Vertical Correction (Top-to-Bottom)

1. Zero indicator A at top dead center (12 o’clock) ofcoupling half Y (Fig. II-B).

2. Rotate indicators/coupling halves to bottom deadcenter (6 o’clock). Observe needle and recordreading.

3a. Negative Reading - The coupling halves arefarther apart at the bottom (6 o’clock) positionthan at the top (12 o’clock). Correct by adjustingleveling screws near the center foundation boltsin order to raise the center of the baseplate(Fig. II-B). See Notes A and B.

3b. Positive Reading - The coupling halves arecloser at the bottom (6 o’clock) position than atthe top (12 o’clock) position. Correct by adjustingleveling screws near the center foundation boltsin order to lower the center of the baseplate(Fig. II-B). See Notes A and B.

3700-8th IOM 12/04 75

8Fig. II-A

Fig. II-B

NOTE A: When adjusting leveling screws, nutson foundation bolts should be tightened onlyenough to hold firmly. Final tightening is doneafter the unit is grouted and the grout has set forat least 48 hours.

NOTE B: Shims that may be provided under thedriver feet should not be used to obtainsatisfactory angular alignment until after thegrout has been poured and allowed to cure.

4. Repeat steps 1 through 3 until indicator A reads0.05 mm (.002 in.) or less.

Horizontal Correction (Side-to-Side)

1. Zero indicator A on left side of coupling half Y, 90°from top dead center (9 o’clock, Fig. II-C).

2. Rotate indicators/coupling halves through topdead center to the right side, 180° from the start(3 o’clock). Observe needle and record reading.

3a. Negative Reading - The coupling halves arefarther apart on the right (3 o’clock) side than theleft (9 o’clock) side. Correct by sliding the shaftend of the driver to the left or the opposite end tothe right (Fig. II-C).

3b. Positive Reading - The coupling halves arecloser together on the right (3 o’clock) side thanthe left (9 o’clock) side. Correct by either slidingthe shaft end of the driver to the right or theopposite end to the left (Fig. II-C).

NOTE: Drive trains of over 100 HP are suppliedwith adjustment provisions fastened to thebaseplate which may be used to make allhorizontal alignment corrections.

4. Repeat steps 1 through 3 until indicator A reads0.05 mm (.002 in.) or less.

5. Re-check both horizontal and vertical readings toensure adjustment of one did not disturb theother. Correct as necessary.

PARALLEL ALIGNMENTA unit is in parallel alignment when indicator P(parallel indicator) does not vary by more than 0.05mm (.002 in.) as measured at four points 90° apart atoperating temperature, or when the shaft centerlinesare within the recommended cold setting criteria asshown in Table II-1.

Table II-1Cold Setting of Parallel

Vertical AlignmentDriver Type Set Driver Shaft

Electric Motor0.05 - 0.10 mm LOW(.002 - .004 in. LOW)

Turbine, Engine, etc.Follow driver manufacturer’s rec-

ommendations

Vertical Correction (Top-to-Bottom)

1. Zero indicator P at top dead center (12 o’clock) ofcoupling half Y (Fig. II-D).

2. Rotate indicator/coupling halves to bottom deadcenter (6 o’clock). Observe needle and recordreading.

3a. Negative Reading - Coupling half X is lower thancoupling half Y. Correct by removing shims ofthickness equal to half of the indicator readingfrom under each driver foot (Fig. II-D).

3b. Positive Reading - Coupling half X is higher thancoupling half Y. Correct by adding shims ofthickness equal to half of the indicator readingunder each driver foot (Fig. II-D).

NOTE: Equal amounts of shims must be addedto or removed from each driver foot, or thevertical angular alignment will be affected.

4. Repeat steps 1 through 3 until indicator P reads0.05 mm (.002 in.) or less when hot, or perTable II-1 when cold.

76 3700-8th IOM 12/04

Fig. II-C

Fig. II-D

Horizontal Correction (Side-to-Side)

1. Zero indicator P on left side of coupling half Y,90° from top dead center (9 o’clock, Fig. II-E).

2. Rotate indicator/coupling hubs through top deadcenter to the right side, 180° from the start (3o’clock). Observe needle and record reading.

3a. Negative Reading - Coupling half Y is to the leftof coupling half X. Correct by sliding driver evenlyto the right a distance equal to half of the indicatorreading (Fig. II-E).

3b. Positive Reading - Coupling half Y is to the rightof coupling half X. Correct by sliding driver evenlyto the left a distance equal to half of the indicatorreading (Fig. II-E).

NOTE: Failure to slide driver evenly will affecthorizontal angular alignment.

4. Repeat steps 1 through 3 until indicator P reads0.05 mm (.002 in.) or less.

5. Re-check both horizontal and vertical readings toensure adjustment of one did not disturb theother. Correct as necessary.

COMPLETE ALIGNMENTA unit is in complete alignment when both indicators A(angular) and P (parallel) do not vary by more than0.05 mm (.002 in.) as measured at four points 90°apart when pump and driver are at operatingtemperature.

1. Zero indicators A and P at top dead center(12 o’clock) of coupling half Y.

2. Rotate indicator to the bottom dead center(6 o’clock). Observe the needles and record thereadings.

3. Make corrections as outlined previously.

4. Zero indicators A and P on the left side ofcoupling half Y, 90° from top dead center (9o’clock).

5. Rotate indicators through top dead center to theright side, 180° from the start (3 o’clock).Observe the needles and record the readings.

6. Make corrections as outlined previously.

7. Recheck both vertical and horizontal readings toensure adjustment of one did not disturb theother.

8. Correct as necessary.

NOTE: With experience, the installer willunderstand the interaction between angularand parallel alignments and will makecorrections appropriately.

3700-8th IOM 12/04 77

Fig. II-E

HOW TO ORDER PARTS

When ordering parts, call1-800-446-8537

or your local ITT Industries - Goulds Representative

EMERGENCY SERVICE

Emergency parts service is available24 hours / day 365 days / year . . .

Call 1-800-446-8537

Form No. I3700 Rev. 12/04 © copyright 2004 Goulds Pumps, Incorporateda subsidiary of ITT Industries, Inc.

For more information, call your nearest Goulds sales representative or visit our website at www.gouldspumps.com.