PHQ Long Tom Manual 2012

8/17/2019 PHQ Long Tom Manual 2012

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Long TomDrill Carrier Manual


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Preface

The manual is intended to provide users of Long Tom Drill Jumbos with operating andmaintenance instructions to maximize the operation of these machines. PHQ strives to

provide highly productive light weight drill jumbos that are easy to use and maintain at areasonable cost. This document contains instructions in assembly of components,

schematic drawings and parts lists to enable the mechanical department to identifycomponents and provide access to part numbers for ease of ordering replacements. Themanual also provides basic instructions for tramming, steering and setting up the jumbo.

Use the maintenance and repair manual of instructions for PHQ250 Jacklegs to care forthe drills and one can gain significant operating instruction and information from the

Operating Manual for PHQ250 Jacklegs.

For information about any components not shown in the manual or any service issueswhich may arise in the use and maintenance of the Long Tom Jumbo please contact PHQ

directly at the following address:

Parts HeadQuarters Inc.

Unit 2, 1175 Appleby Line

Burlington, Ontario, Canada, L7L 5H9Tel: (905) 332-3271 Fax: (905) 332-9497

E-mail: [email protected]

mailto:[email protected]:[email protected]:[email protected]:[email protected]


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Table of Contents

1. Overview 4

2. Carri er Styles and Dimension s 5

2.1 Skid Steer………………………………………………………………………………………….. 5

2.2 Rail Mou nt …………………………………………………………………………………………. 6

2.3 Crawl er……………………………………………………………………………………………… 7

3. S ec if icat ions and O t ions 8

3.1 Techn ic al Data……………………………………………………………………………………. 8

3.2 Stand ard Features ……………………………………………………………………………….. 8

3.3 Opti on s…………………………………………………………………………………………….. 9

4. Features and Tips 11

4.1 Lo cki ng Valves…………….…………..…………………………………..…………………….. 11

4.2 Sti cki ng Jerk y Cyli nd er………...……………………………………..……………………….. 12

4.3 Safely Fill ing Lu br icat or s……………………..……………………………………………….. 124.4 Bl ow th e Hoses …………………...……………………………………..……………………….. 12

5. Preparing to Lif t, Carry, Tow or Tram the Long Tom………………………… 12

6. Li ft ing and Carryi ng the Jum bo…………………………………………………… 13

7. Tow ing the Jumbo……………………………………………………………………. 14

8. Trammi ng the Jum bo………………………………………………………………… 16

9. Setti ng up the Jum bo to Drill and Drilli ng………………………………………. 18

10. Dril li ng Tips and Safety Tips……………………………………………………….. 22

11 Maintenance and Assembly – Carri er Skid Steer Schematic & Parts Lis t 23


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1. Overview

1.1. Origins of the Long Tom Drill Carri er

A cost-effective solution was required to reduce or reduce or eliminate the negative aspects ofhandheld drilling with Jackleg drills, including:

• The fatiguing physical Labour required when working from uneven terrain

• A high accident and injury frequency, especially muscle strains from fatigue

•

Low productivity resulting from frequent re-positioning of legs of drills• Difficulty in pulling drill steel from completed holes due to operating conditions

1.2. Benefits• Removes the physical effort required to lift the drill and position the leg

• Simplifies collaring holes, maintaining alignment, and moving from hole to hole.

• Requires fewer changes of drills steel. Holes often collared with eight foot rods.

• Faster drilling with a long stroke feed (no interruption needed to move legs).

• Quicker movement from one hole to setup on to the next hole.

• Drills held aloft by booms making it fast and easy to change drill steel.

• Capable of drilling a 8 foot 2400 mm drill hole in one pass

• Eliminates slippage of the end of the air leg on the drift floor.

• Eliminates potential hazards to the operator due to steel breakage.

• Powerful retract of the anchored leg pulls steel from hole much better.

• Drills remain mounted on the jumbo when not in use (out of harms way).

• No need to connect hoses at start of shift or disconnect hoses at the end.• The Jumbo trams right in to the work place and arrives at the face ready to drill

• NOTE: Rail-mount style jumbos require a locomotive to provide tramming.

• The jumbo is fully pneumatic powered with no pumps or hydraulic systems


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2. Carr ier Sty les

2.1 Skid-Steer

The standard Skid-Steer carrier is a fully-mobile self-propelled solid rubber tired carrier suitablefor most underground applications. The jumbo featuring two independent pneumatic motorsdriving the four wheels has impressive flexibility and mobility under most conditions required of

trackless equipment in the work place. The unit mounts two jackleg drills on pneumatic booms.


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2. Carr ier Sty les

2.3 Rail Mount

For mining operations where there is an existing network of rails the rail-mount carrier is themost cost-effective option. The jumbo is equipped with three jacklegs mounted on the samebooms as our standard skid-steer units. Face coverage remains the same however the thirddrill speeds up operations where the air supply is sufficient. The jumbo is built for a standard

rail gauge of 24” (610 mm) however the width could be customized according to requirements.


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2. Carr ier Sty les

2.3 Crawler

For extremely challenging and rough terrain, additional power and traction may be necessary.PHQ has worked with customers to create a custom crawler style carrier. Like the skid-steer

jumbos the crawler models are fully self-propelled however feature an extremely rugged track-based design. Each of the tracks is independently driven and controlled allowing for greatmaneuverability, while offering the same range of boom motion as our other models.

Please note: All Track Driven Long Tom Jumbos are custom designed and built for specificrequirements and to meet various applications as required. No general dimension drawing,specific technical information or schematic part drawings are provided until the units are built.Service and support for these units is provided on an individual basis to meet requirements.For more information contact PHQ at the address rovided at the be innin of the manual.


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3. Specifications & Features3.1 Techni cal Data

Length, Overall 17 Feet (5.18 Meters)

Width, Overall 53 Inches (1346 mm)

Height, Overall 66 Inches (1676 mm)

Weight 5,500 lbs (2495 kg)

Booms (Standard) Two

Boom Length 9 Feet (2.75 Meters) Retractable

Standard Face Coverage 8 Feet Wide x 11 Feet in Height **

Motor – Gear Box 16AM13 GAST Gear Motor

Spring-return Tramming Valves ¾ inch (20mm) Inlet / Outlet

Drive Chain Size & Length #80 HD Chain, 11 Feet 2 Inches in Length

Drill Adapters C-109HD (fits PHQ 250 Drill)

Four Tires Solid Rubber 22 Inches (560 mm) Diameter

Three Lubricators JOY Football Type 2.7 Pint (1.5 Liter)

Air Consumption *** 380 f 3/min (10.7 m3/min) @ 90 psi (6.2 Bar)

* Technical Data: Specifications listed are based on the shipping dimensions of the carrier itself, with booms, goosenecks anddrill adaptors attached in locked positions (i.e. not swung open or extended) however, these figures do not include drills or anyoptional equipment. ** Standard Face Coverage: Measures represent the maximum distances attainable under standardconfiguration and allowing the booms to swing open as far as possible. Additional width coverage of one extra foot may begained by rotating the goosenecks 90º (6” per side) For additional height and width please see the extender options featured


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3.3 Options

Long Tom Jumbos can be customized with the addition of the following options:

Boom 12” Extender to expand thewidth of face coverage up to 12Inches (340 mm) per side. Theextender increases face coverageallowing for 10 foot (3 meter) width x11 foot (3.4 meter) height

Boom 15” Extender to expand theheight of face coverage up to 15Inches (380 mm) per side. Theextender increases face coverageallowing for 10 foot (3 meter) width

by 12 foot (3.7 meter) height

Operator’s Dril l i ng Platform pullsout of the front end of the jumbo and

folds out to provide the added heightrequired to reach drill controls whendrilling back holes.


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3.3 Options Cont inued

Towing Eyes are installed front andback on the Long Tom Jumbo to alloweasy connection for towing using anextendable Tow Bar or a Chain.

Boom Safety Chain. A hole is drilledin the web reinforcement of the boomextension to accommodate a “D” typeshackle and the last link on a lengthof one inch chain with a hook on oneend has the last link at the other endwelded to the boom. Connect thehook into the shackles to ensure the

boom does not extend accidently.

Tool Box . A tool box can be weldedto the rear of the Skid Steer Carrierabove the operator’s platform to allowfor storage of smaller spare parts andtools if required.

Wheel Chock Holders (four) to store


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3.3 Options Cont inued

Self-Rescuer Box can be added at theback of the Long Tom Jumbo to

carry a PLC1200BK Self Rescuer

Drill Steel Holders are attached to the topof each wheel fender. Different lengths of

drills steels up to eight foot under the collar

can be placed in the holders while drilling.

Loose drill steels in the holders must besecured when tramming

Extendible Towing Bar

Eyelets are installed at the front and rear of

the Long Tom where an Extendable TowBar can be affixed to tow the carrier. (see

instructions for towing the LongTom onPage 17)


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4.2. Jerky Cylinder Action - When new the boomlift cylinders and extension cylinders “stick” causingthe cylinder pistons to jerk in or out. Open the drillthrottle with control handle in the lowest hammeringposition. Vibration helps to make the movement ofthe booms up and down and the extending andretracting of the feed piston in and out smoother.

4.3. Safety Fill ing Lubricators – PHQ suppliessafety filler caps on all our lubricators. To fill the

lubricator with rock drill oil or rock drill grease undothe filler cap using a mine wrench. There will be anaudible hiss of air if the lubricator is pressurized.Close the valve and blow the hose to relieve anypressure before removing the cap to fill lubricator.

4.4. Always blow hoses and air l ines before

connecting. Air hoses must be “blown” every timebefore connecting to the Jumbo to clear any debrisor water in the air lines. Water hoses should bebriefly flushed before connecting to be sure there isno debris in the water hoses. The air supply andwater supply to the Jumbo should be turned offwhenever the Jumbo is not in use. Drain waterhoses if there is danger of freezing temperatures.

5. Preparing to Lift , Carry, Tow or Tram the Long Tom


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5.4 Store The Wheel Cocks in the four holders

provided.

5.5 Secure Dri ll Steel in the steel holder bysnuggly wrapping rope or strap around the steelin the holder. Be sure drill steels cannot slip outwhen moving the carrier.

5.6. Disconnect the water supply from themain mine water header and coil on the jumboor transport separately.

6 Lifting and Carrying the Jumbo

6.1. It is possible to pick up the carrier and carrythe Jumbo in the bucket of a large scoop tram orfork lift truck. Always securely chain the carrierto the bucket of the scoop tram or forks of the lifttruck using the chain hooks provided on thepedestal tower of the drill carrier. There is no

need to place the chain drive in neutral positionif lifting and carrying the Jumbo.

6 2 Ch k t b th t th t i t l


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6.5. Back the Long Tom rear wheels into the

bucket of a scoop tram or over the forks of autility lift truck. Remove the operators stand.Operate the tramming levers by reaching acrossthe back of the bucket to reach the handles.Back in until the back end of the carrier is upagainst the bottom of the bucket on the scooptram or firmly against the uprights of the truck.

6.6. Chain the Jumbo tightly to the bucket ofthe scoop tram or the uprights of the large utilitylift truck using 3/8 inch (50mm) chain. Tilt thebucket of the scoop tram or forks of the utility lifttruck back to lift the front wheels of the Jumbooff the ground.

6.7. Disconnect the bul l hose from main mineair supply line valve and coil on the jumbo orremove and transport separately. Proceed totransport the Jumbo.

6 8 Remove the booms It may be necessary


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7. Towing the Jumbo

7.1 Check the area surrounding the Jumbo when towing. Be attentive where the drilling endsof the booms are when towing the Long Tom Jumbo so they do not strike the wall. Follow allthe procedures described in 5. Preparing to Lift, Carry, Tow or Tram the Long Tom

7.2. The two chain dr ives must be placed in neutral.Remove the bolt from the center of each of the drive

caps and set the bolt to one side. Safety Point: Thecarrier should be on a level surface or the wheelschocked before working on the chain. The air motorsand chain act as a passive braking system.

7.3. Remove the caps (SJ7858). The caps may havebecome very snug and it may be necessary to use aflat head screwdriver to pry the caps from thesprockets.

7.4. Reverse the Caps and replace it on the sprocketswith the keyway facing outwards so that the drive

sprockets are now disengaged and turn freely on thedrive shafts.


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7.7. Tow the Carrier from the front end using the

extendable Tow Bar provided. Be sure booms arealigned as close together as possible centered on the

jumbo and resting in the boom supports (See 5.2). Tiethe booms together and down securely with rope orstraps.

7.8. Tow the Carrier from the front end using the

extendable Tow Bar provided. Drop the post on theend of the Tow Bar into the Eyelet and insert the crosspin and fix securely in place with the locking pin. Caremust be taken when towing the carrier with the boomsin a forward position to ensure the booms do not strikethe walls of the travel way.

8. Tramming the Jumbo

Safety Point: Be aware of any personnel that may be in the area and take special attention ofwhere the drilling ends of the booms are when tramming the Long Tom jumbo. Follow all theprocedures described in 5. Preparing to L ift, Carry, Tow or Tram the Long Tom

8.1. Disconnect the water supply from the mine supplyat the header and coil the water hose on the jumbo ortransport separately if tramming the Long Tom over long


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8.3. Lock both booms securely from swinging. The

trailing hoses from the booms to the drills should be liftedand tied to the booms. The operator can now mount theplatform at the back of the carrier to get into position tooperate the tramming control handles.

8.4. Safety Point: Be sure the Bull Hose is long enough tocomplete the tram distance. Do not stretch the hose andput strain on the fittings.

8.5. Check to be sure that the tramming control handlesare in the neutral position.

8.6. Reach down and turn on the air supply valveproviding compressed air to the two pneumatic drivemotors inside the carrier.

8.7. Safety Point: Check the immediate area, walkaround the carrier and check in the direction you areintending to travel to be sure no personnel are in theoperating zone of the carrier.

8.8. Always stand on the operator’s platform whentramming the Jumbo. The operator should have a clearview of both sides of the Long Tom and to the front of themachine when tramming forward. Always check to therear to be sure personnel are clear of the area beforetramming to the rear. Never operate the tramming handles


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8.11. To rotate the jumbo to the left push forward on the

handle on the right side at the same time as you pull backon the handle on the left side. While tramming the jumbowill turn to the left when the left handle is returned to theneutral position or at any time the right handle is furtheradvanced than the left handle

8.12. To rotate the jumbo direction to the right pushforward on the handle on the left side at the same time as

you pull back on the handle on the right side. Whiletramming the jumbo will turn to the right when the righthandle is returned to the neutral position or at any time theleft handle is further advanced than the left handle

8.13. Release both handles and they will return tothe neutral position stopping the flow of compressed

air to the motors and the jumbo will come to a stop.With the flow of air stopped the motors act as apassive braking system and the Jumbo does notmove when on a flat surface.

9 Setting up the Jumbo to Drill and Drill ing

9.1. Access the Filter Screen before connecting the BullHose to the main air valve at the receiver on the Long Tomby removing the large air valve assembly to reveal the filterhandle on the stainless steel filter screen inside


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9.4. Connect the Bull Hose to the main mine compressedair supply valve at the header provided at the work site.Blow hose as described in 4.4. For the moment turn thecompressed air and water valves off.

9.5. Inspect the Work Place. The area where the drilling

is to take place must be inspected and any loose rockscaled before moving the jumbo in. Turn on the water andwash down the face to check for “miss holes” or “bootlegs”(holes from previous work where explosive did notcompletely detonate). The face should be marked up andpainted to show a grid outline of where the holes will bedrilled. It is good practice to drill the cut in a differentlocation each round to avoid “bootlegs”.

9.6. Connect the air and water hoses to air and waterinlet connections on the Long Tom. Turn on the air andwater valves at the header.


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9.9. Align the Jumbo Booms with the center line of theround to be drilled using the back-sight and front-sight lineplugs supplied by Mine Engineering. The LongTom shouldbe “square” to the face wherever possible.

9.10. Before Turning on the Air to the Booms place the

throttle handles on both of the drills in the “neutral” positionand the feed control handles on both of the drills in the“forward” position. Air must flow through the drills andback to the boom controls to operate the booms and legfeeds.

9.11. Open the lubricator plugs in the fill ports on the in-linelubricators mounted on the booms that supply air to thedrills and inspect to be sure that there is adequatelubricant in the reservoir for drilling. Tightly close thelubricator plugs and turn on the air valves and water valvesnext to the lubricators to open the supply to each drill.

9.12. Unlock the Pressure Regulator Knob by turning thecentre red locking control counter-clockwise until the


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9.15.. Once the operator gains “a feel” of the controls he

will be able to set the Pressure Regulating Knob so thatthe balance of the Boom complete with Drill attains“equilibrium” and will require only slight pressure by theoperator to raise or lower the boom to a new drillingposition. A fold out platform (pictured) is an option. Ifdrilling in workings with high roof it is advisable to build asimple portable platform to use when drilling back holes.

9.16. Lock the Pressure Regulator Knob by turning thecentre red locking control in a clockwise direction until the Pressure Regulator Knob can not be turned. The controlremains in this position as long as the boom remainsbalanced in equilibrium.

9.17. Extend the Feed Leg by rotating the HexagonalHandle on the Gooseneck in a counter-clockwisedirection.

9.18. Retract the Feed Leg by rotating the HexagonalHandle on the Gooseneck in a clockwise direction.

9.19. Extend the Feed Leg by rotating the HexagonalHandle on the Gooseneck in a counter clockwise


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10. Dril ling Tips and Safety

10.1. All Normal Mine Safety Rules apply when using the Long Tom Jumbo. All requiredsafety gear, hard hats, gloves, safety lanyard belts, mine personnel lights, hard toed boots, andmine coveralls or oilers are to be worn as required.

10.2. Walk Into the Workplace to check for hazards before tramming the Long Tom to theface.

10.3 Normal Mining Procedures Apply. Check for loose with a scaling bar, scale and washdown and mark the face where the drilling will take place.

10.4. Drilling a Drift Round. Start drilling the lower holes in the drift round first to preventwashing away the marks on the face that designate where the holes should be drilled.

10.5. Two Drill Operators can work together to accurately collar all of the holes to be drilled inthe round using a shorter drill rod. To collar the holes, one man will operate the booms anddrills while the other stabilizes the drill steel and bit at the face to start the holes at the right

location. The drillers move to each location and drill a collar a few inches deep. Collaring allthe holes in the right place makes it easier to move the boom and drill from one hole to anotherduring drilling operations and each man can work alone with his own Boom and Drill tocomplete the round.

10.6. Operators should check the work place during the shift to see if drilling has causedany loose rock at the back or on the face. Test the roof and face with a scaling bar to be sure.

10.3. Drillers should read the Operating Manual for PHQ250 Jackleg Dril ls and follow theinstructions when drilling a drift round. A Long Tom Boom replaces a Retractable Leg usedwith a PHQ250 Jackleg Dri ll providing faster drilling, much easier and safer work conditions.


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11. - 20. Parts, Assembly and Maintenance

11. Carri er Skid Steer Schematic and Parts Lis t


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12. Replacing t he Chain Drive (Y8040)

12.1. Open the chain guard on either side of the drill carrier.Remove a bolt from on end of the guard, loosen the bolt at theother end and swing the guard out of place.

12.2. Replace the Chain (Y8040). Lay out a new chain bydraping it over the sprockets as shown and pull tight.

12.3. Bring both ends of the chain together near the bottom ofthe large wheel sprocket and temporarily join the ends of thechains together using a clamp as shown.

12.4. Insert a Master Link (Y80401) and secure with a Half Link(Y80402) to complete the chain.

13 Adj ti T i f Ch i D i (Y8040)


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13.3 Increase the Tension until the chain is rigid and no slackis evident between the top two idler sprockets. There is noneed to tighten the chain beyond this point.

13.4 Lock the Chain tension setting by tightening the locking

nut against the plate to secure the assembly from furthermovement.

14. Mounting Bracket (X1674) Schematic and Parts List


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15. Assembly of Mounting Bracket (X1674)

15.1. Lay out all the components that make up themounting bracket assembly on a flat surface as shown.

15.2 Slide the Taper Lock Pedestal (X1637) over the shaft of the Mounting Plate (W1511) until the pedestal rests on thetaper of the shaft.

15.3 Push the Pedestal Pressure Ring (Y1280) into the TopBearing Plate (Y1631)

15.4. Place the Top Bearing Plate (Y1633) on the bracketassembly. Take care to line up the bolt holes on the bottom.Slide two of the Washers (J5140) onto the Bol ts (J5130) and


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15.7. Thread one of the Grease Fittings (1610) into the centerof the Taper Lock Pedestal (X1637)

15.8. Thread the other Grease Fitting (1610) into the holeprovided on the Taper Lock Pedestal (X1637) near the TopBearing Plate (Y1631)

A Long Tom Jumbo requires two completeMounting Bracket Assemblies (X1674).

The rugged mounting bracket assembly isdesigned to carry the full weight of the boomassembly while still providing a flexible mountthat allows the boom to be manually turned

and moved into various drilling positions withrelative ease.


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16. Balance Cylinder (W1672) Schematic and Parts List


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17 Assembly of Balance Cylinder (W1672)

17.1. Lay out the components of the Balance Cylinder Assembly (W1672).

17.2. Insert the Piston Rod Bearing (Y271) into the CylinderHead (X16711)

17.3. Carefully press the Piston Rod Bearing (Y271) into placeuntil seated firmly in the Cylinder Head (X16711)

17.4. Seat the Rod Wiper (250G2) into the Socket Packing Cap(Y268)


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17.8. Place the Packing Cap (Y268) onto the Cylinder Head(X16711). Be sure the holes in the components line up perfectly.Place four Washers (J5020) on the four Bolts (J5010). Tightenthe bolts firmly.

17.9. Apply a thick layer of grease to the inner diameter of the

Packing Cap (Y268) and the Cylinder Head (X16711).

17.10. Turn the Cylinder Head (X16711) upside down and placethe Gasket (Y2721) on the recessed diameter of the face of the Cylinder Head.

17.11. Slide the Cylinder Head (X16711) on to the Piston Rod(Y1257).

17.12. Position the Cup Follower (Y265) on to the end of the Piston Rod (Y1257)


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17.15. Turn the Rod Nut (Y1250) on to the threaded end of the Piston Rod (Y1257) and tighten.

17.18. Install the Set Screw (supplied with Y1250) in the hole onthe Rod Nut (Y1250).

17.19. Slide the Balance Cylinder Bare (X1642) over the rodassembly and line up the bolt holes with the Head Gasket (Y272)and the Cylinder Head (X16711). Fasten the two piecestogether using eight Bol ts (J5030) eight Washers (J5040) andeight Nuts.

17.20. Install the Pipe Plug (Y1263) into the hole on the end ofthe Balance Cylinder Bare (X1642).

17.21. Loop a chain through one of the links of the Drop LockChain (J5000). Fasten the chain to the Balance CylinderA bl


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18. Leg Cylinder (W2619) Schematic and Parts Lis t


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19. Assembly of Leg Cylinder (W2619)

19.1. Lay out the following components of theLeg Cylinder Assembly (W1672).

1 of Retaining Ring (5000275)1 of Rod Wiper (275HD2)1 of Set Rod Packing (Y274)

1 of Piston Rod Bearing (Y271)1 of Packing Cup (Y1252)

19.2. Carefully place the Piston Rod Bearing (Y271) into the Packing Cup (Y1252) so that it is properly aligned...

19.3. Press the Piston Rod Bearing (Y271) firmly into the PackingCup (Y1252) until it seats solidly in the Packing Cup.

19.4. The top surface of the Piston Rod Bearing (Y271) shouldalign with the top surface of the Packing Cup (Y1252)


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19.8. Lay out all of the remaining LegCylinder components on a clean flat surfacebefore proceeding to complete the assembly.

19.10. Slide the Inlet Cup Fol lower (W25900) onto the Piston Rod(Y1730) in front to the Packing Cup Assembly (Y1252).

19.11. Place a Cup Packing (Y1241) over the Piston Rod (Y1730) andinstall onto the Inlet Cup Assembly (Y1252).

19.12. Place the brass Piston Head (Y1238) on the Piston Rod (Y1730butting up to the Cup Packing (Y1241).


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19.16. Place the Rod Nut (Y1250) onto the threads on the end of thePiston Rod (Y1730) and tighten snugly.

19.17. Push the Transfer Hose (J5110) through from the other end ofthe Piston Rod (Y1730) and continue until the end comes out throughthe Piston Rod and the Rod Nut.

19.18. Attach the Transfer Hose End Fit ting (J5120) to the end of theTransfer Hose (J5110).

19.19. Carefully screw the Transfer Hose End Fit ting (J1250) into the

threads inside the Rod Nut (Y1250).

19.20. Insert the completed Piston Rod Assembly (Y1730) into the LegCylinder (X1650).

7. Routine Maintenance and Lubrication


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20.1. Filling Drill Lubricators Check the level of the rockdrillgrease (or oil) in the two in-line football style lubricators on the


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20.3. Filling the Lubricator for the Drive Motors Check thelevel of the rockdrill grease (or oil) in the in-line football style

lubricator at the back of the Jumbo at the start of each shift to besure it is full. Remove the safety filler cap with a mine wrenchand top up the rock drill grease in the reservoir. PHQrecommends use of Vultrex triple zero rock drill grease.

20.4. Avoiding Air Contamination - Bull Hose Always “blow”the air line before connecting the Bull Hose to the Air Receiver.Should debris enter from the air line the ports and orifices where

the air flow is constricted will plug causing catastrophic problemswith the entire jumbo and drill system. If contaminated air entersthe jumbo it will be necessary to disconnect most air connectionsand “blow” plugged areas clear of debris. Check the inside of the

Air Receiver and clear out any debris inside.

20.5. Lubricator and Tramming Pipe Assembly Compressed

air travels from the Air Receiver inside 1” pipe connections,passing through the 1” full flow inner tube of the Lubricator.Check that the Lubricator is not contaminated with water or debrisby removing the Safety Filler Cap.

20.6 Tram Valves From the Lubricator the pipe is narrowed down

to 0.75” fittings and hoses to connect to the 0.75” ports in theTram Valves. If the Tram Valves become contaminateddisconnect the air hoses and flush the valve with water pressure.Pour a cup of rock drill oil into the port and flush with air pressure


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20.8. Fittings and Hoses Supplying Booms. Pneumatic fittingsand hoses from the Air Receiver to the boom are 1” nominaldiameter and most likely would not be blocked by debris. If majorcontamination has entered the air line it will be necessary to undoach of the sure lock quick connect couplings beginning from the

Air Receiver and progressively “blow” the air before reconnectingeach fitting

20.9. Boom Lubricator and Hoses. The pneumatic fittings and

hoses on the boom are 1” nominal diameter and most likely wouldnot be blocked by debris. Debris can enter the ports in theLubricator on the boom and this should be checked by removingthe safety filler cap. To clear the hoses on the boom close thesupply at the receiver and break open the coupling beyond theLubricator. Blow the hose until visible fog from moisture stops.Close valve at the Air Receiver.

20.10. Air Supply to the Boom. Compressed air is supplied tothe boom from the 1” air hose connected through the BoomLubricator to the Weldment on the boom. Air is supplied to theBalance Cylinder Regulator that controls the Boom Lift Cylinderfrom a “T” in the boom air supply through a 0.375 high pressurehose to the 0.375” port in the Weldment holding the Regulator.Blow the line by closing the valve on the air supply and removingthe hose from the Weldment.

20.11. Balance Cylinder Regulator. Should the valve notfunction properly once the air line has been blown, the valveshould be replaced with a new valve The valve can be removed


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20.12. Boom Feed Control Valves. All porting and orifices inthe Boom Feed Control Valves are 0.25” diameter. If the air

supply contains debris in excess of 0.25” these valves canbecome plugged. Should the valves be constricted the feedcylinder will not receive enough air to maintain proper feedpressure on the drill. This can result in lack of penetration of thedrill and could lead to overheating the drill and burning thelubrication in the drill resulting in failure.

20.13. PHQ250 Rock Dril l. The rockdrill contains many smallerorifices and ports that are susceptible to becoming pluggedshould the air supply be contaminated. Remove the Air SwivelConnection Assembly and check the cone shaped screen insidethe JC45 for debris. If the interior of the drill has beencontaminated with debris it should be replaced and returned tothe shop for full repair. See: PHQ250 Jackleg Manual forprocedures.


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PHQ Long Tom Manual 2012

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