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RE

NR

8168-0

124 P

ag

e

RENR8168-01June 2005

D10T Track-Type TractorPower Train SystemRJG1-UP

© 2005 CaterpillarAll Rights Reserved

Printed in U.S.A.

TapNumber

SchematicLocation

Description

AA B-7 SOS Sampling Port

B1 E-5 LH Brake Pressure

B2 E-5 RH Brake Pressure

C1 E-5 LH Clutch Pressure

C2 E-5 RH Clutch Pressure

CL C-3 Cooler Lube Pressure

CL1 C-6 Trans. 1 Clutch Pressure

CL2 D-6 Trans. 2 Clutch Pressure




Engine Speed

XMSN Gear

PT Oil Type/ Trans. Lube Oil Temp

L1 C-8, C-7 Trans. Lube Pressure

L2 A-4 Lube Manifold Pressure

LB1 F-5 LH CL/BK Lube Pressure

LB2 A-5 RH CL/BK Pressure

M F-7, C-7, C-8 T/C Supply Pressure

M1 C-3 T/C Supply Pressure

N C-3 T/C Outlet Pressure

P D-7, D-8 Trans. Main Relief

TP E-7 Trans. Pump Pressure

Tap LocationsPressure, Sampling, and Sensor

D-1ER1

Component Locations

ItemNumber

PartNumber

SchematicLocation

Description

1 201-8389 E-4 PTO Pump 2 245-6555 B-7 PTO Filter (T/C Charging) 3 245-6555 E-7 PTO Filter (Transmission Charging) 4 221-0867 E-5 ECB Valve/ Mounting Gp. 5 232-3374 A-4 T/C Inlet Relief/ Lube Dist. Valve Gp. 6 217-5393 C-3 T/C Outlet Relief Valve Gp. 7 221-1831 D-4 Pump Inlet Screen/ Housing Gp. 8 213-5171 D-7 Transmission Ar. 9 106-0466 A-5, F-5 Final Drive Gp. 10 226-7614 D-2 Torque Converter/ Housing Gp. 11 8S-9130 C-2 Torque Converter Screen 12 4W-5412 B-2 Powertrain Oil Cooler 1 13 6I-3014 B-2 Powertrain Oil Cooler 2 14 232-3374 C-7 Main Relief Valve 15 164-7577 F-7, B-7 Filter Bypass Sensor 16 201-7272 D-6 Proportional Valve Gp. 17 145-7028 E-7 XMSN Controls Temp Sensor 18 188-6140 F-8 Pin Puller Valve Group 19 258-8717 F-8 Pin Puller Attachment 20 197-4652 E-6 Relief Valve

The torque converter inlet relief valve and the lube distribution manifold are mounted to

the right, front of the main case. They are consolidated into one housing (A).

The electronic steering clutch and brake control valve (B) is mounted to the top of the

main case.

The four-section power train oil pump (D) is driven by a shaft that connects the drive

hub (C) to a drive hub on the rear of the hydraulic demand fan pump (not pictured). The

drive shaft is covered by a guard when the machine is completely assembled.

The transmission charging section and the torque converter charging section of the power

train oil pump draw their oil from the main sump through the screened suction manifold (E).

The suction screen is accessible for cleaning by removing the cover (F) on the front of

the suction manifold.

The vent line (G) connects the torque converter housing and the main case to maintain an

equal atmospheric pressure inside both components.

The four-section, fixed displacement power train oil pump is

mounted to the left, front of the main case. This fixed

displacement gear pump consists of:

The two, 6-micron power train oil filters are located at the rear of the machine. Shown

in the illustration above is the torque converter charge filter (A) and the transmission

charge filter (B). The ecology drain (C) for the transmission case is also located at

the rear of the machine, at the bottom of the transmission case (D). The transmission

hydraulic control may be accessed by removing the transmission inspection cover (E),

at the top of the transmission case.

The 6-micron transmission charge filter "A" (F) is located at the upper left, rear of the

main case. Service points located on this filter base are:

The electronic steering clutch and brake valve (4) is located on top of the main case. Shown tothe right is;

(A). Right steering clutch solenoid (B). Right brake solenoid (C). Left brake solenoid (D). Left steering clutch solenoidA through D are proportional solenoids

(E). parking brake solenoid (F). secondary brake solenoidE and F are ON/OFF solenoids

Four pressure test ports (C1, B1, B2, and C2)They coincide with the order of the clutch and brake solenoids. .

The torque converter output speed sensor (A) is located above the torque

divider output shaft.

The 6-micron torque converter charge filter (K) is located at the upper right, rear of

the main case. Power train oil fluid samples (S•O•S) maybe taken from the test port (AA),

located on the right side of the filter base.

(G). power train filter oil filter bypass switch(H). transmission controls temperature sensor(TP). transmission pump pressure test port

(F). transmission oil fill tube(G). transmission oil dipstick tube(H). screened main sump suction manifold(I). access cover to the main sump suction screen

(A). transmission and torque converter charging section "D"(B). torque converter charging section "C"(C). torque converter scavenge section "B"(D). transmission scavenge section "A"

The pump drive hub (E) connects to a shaft that is driven by a

hub at the rear of the hydraulic demand fan pump. Other power

train components shown in the illustration above are:

Located at the top of the transmission case are the following pressure test ports:

(P). transmission main relief pressure (M). torque converter supply pressure (L1). transmission lube pressure

E

D

AB

C

AATP

G H

F

KTP

AA

P

M

L1

C2B2

B1

C1

E

AB

C

D

Electronic Steering Clutch and Brake Valve

E

F

Component and Pressure Tap Locations

Power Train Oil Filters

LB2Right Clutch Pressure Port

Right Brake Pressure Port

D

C

A

FG

I

H

B

4 Section PTO Pump Brake and Clutch Test Ports

T/C Speed Sensor and T/C Outlet Relief Valve

The torque converter outlet relief valve (B) is mounted

to the torque converter outlet port at the right rear of the torque divider

case. The hot oil exits the outlet relief valve through the upper steel

tube (D). The oil flows to the two power train oil coolers, where it is cooled

and returns through the lower steel tube (E). The oil passes through the valve

body, through a hose connected to the hose flange (F), to the lube distribution

manifold. Torque converter pressure can be checked using the left pressure

tap (N). The right pressure tap (CL) tests cooler inlet pressure. The

torque converter oil temperature sensor (C) monitors torque converter outlet

relief oil temperature. This temperature sensor provides the signal that

drives the torque converter temperature gauge, located at the upper right of

the instrument cluster in the dash, via the Power Train ECM and Advisor.

A

BC

D

E

F

G

A

B

C

F

E

DN CL

Brake pressure for the right brake and clutch pressure for the right clutch may be tested by removing the plug and installing a test tap.Brake lube pressure (LB2) may be tested in a like manner at the forward port. The test ports on the left side of the machine are reversed, for left brake pressure and left brake lube pressure (LB1).

1

1

2

2

3

3 4

4

5

5

6

6

7

7

8

8

9

9

9 11

10 11

12

12

13

1314

14

15

15

15

16

16 17

17

18

1819

19

CL1CL2CL3

CL4CL5

CL1CL2CL3

CL4CL5

C1C2

B1B2

C1C2

B1B2

AA

AA CL

CL

L1

M

P

L1

M

P

L2

L2 M1

M1

LB1LB2

LB1LB2

N

N

TP

TP

Hydraulic Symbols (Electrical)

Electrical Symbols Table

325-AG135 PK-14

Circuit IdentificationNumber

Wire Color Wire Gauge

Harness identification codeThis example indicateswire 135 in harness "AG".

325-PK-14

Wire Gauge

Wire Color

Circuit Number Identification

Wire Number Identification Codes

Current Standard

Previous Standard

Electrical Schematic Example Hydraulic Schematic Example

325-PK

Wire ColorCircuit Number Identification

B A

Wire

Wire

(EXAMPLE VALVE)

Current Standard

Transducer(Fluid)

Transducer(Gas / Air)

G

Generator

Electrical WirePressure Switch

MElectric Motor

Pressure Switch (Adjustable)

Temperature Switch

T

PressureSymbol

TemperatureSymbol

LevelSymbol

FlowSymbol

Electrical Symbols (Electrical)

ONE POSITION TWO POSITION THREE POSITION

VENTED PRESSURIZED RETURN ABOVE FLUID LEVEL RETURN BELOW FLUID LEVEL

LINES CROSSING LINES JOINING

TWO-WAY THREE-WAY FOUR-WAY

SPRING CONTROL VALVES RESTRICTION LINE RESTRICTION(FIXED)

2-SECTION PUMP

MAIN AUX.

SPRING(ADJUSTABLE)

VARIABILITY LINE RESTRICTION(VARIABLE)

LINE RESTRICTIONVARIABLE and PRESSURE

COMPENSATED

PRESSURECOMPENSATION

PUMP: VARIABLE andPRESSURE COMPENSATED

ENERGY TRIANGLESHYDRAULIC PNEUMATIC

MEASUREMENT

PRESSURE TEMPERATURE FLOW

ROTATING SHAFTS

UNIDIRECTIONAL BIDIRECTIONAL

PUSH-PULL LEVER PEDALGENERAL MANUAL PUSH BUTTON SPRING

MANUAL CONTROL SYMBOLS

HYDRAULIC MOTORS

FIXEDDISPLACEMENT

VARIABLE DISPLACEMENTNON-COMPENSATED

UNIDIRECTIONAL

BIDIRECTIONAL

HYDRAULIC PUMPS

FLUID STORAGE RESERVOIRS

CROSSING AND JOINING LINES

VALVE ENVELOPES VALVE PORTS

BASIC COMPONENT SYMBOLS

FLUID CONDITIONERPUMP or MOTOR

FLUID POWER SYMBOLS

FIXEDDISPLACEMENT

VARIABLE DISPLACEMENTNON-COMPENSATED

UNIDIRECTIONAL

BIDIRECTIONAL

VALVES

PILOT CONTROL SYMBOLSRELEASED PRESSURE

EXTERNAL RETURN INTERNAL RETURN

REMOTE SUPPLY PRESSURE

SIMPLIFIED COMPLETE INTERNALSUPPLY PRESSURE

ACCUMULATORS

SPRING LOADED GAS CHARGED

SOLENOIDor MANUAL

SOLENOIDand PILOT

SOLENOID and PILOT or MANUAL

COMBINATION CONTROLS

SOLENOID SERVO THERMAL DETENT

HYDRAULIC AND PNEUMATIC CYLINDERS

DOUBLE ACTINGSINGLE ACTING

BASICSYMBOL

SPRINGLOADED

CHECK VALVES

TWOPOSITION

INFINITEPOSITIONING

FLOW IN ONEDIRECTION

FLOW ALLOWED INEITHER DIRECTION

THREEPOSITION

CROSSFLOW

PARALLELFLOW

INTERNAL PASSAGEWAYS

NORMAL POSITION

A B

P T

A B

P TSHIFTED POSITION INFINITE POSITION

CONTROL VALVES

ATTACHMENT

MANUAL SHUTOFF

SHUTTLE PILOTCONTROLLED

RENR8168-01

24 Page, Color

DRAIN / RETURN LINE

LINES GROUP COLOR DESCRIPTIONSPIN PULLER ATTACHMENT

TORQUE CONVERTER SCAVENGE CIRCUIT

lUBRICATION AND POWER TRAIN OIL COOLER

TORQUE CONVERTER CHARGING CIRCUIT

TRANSMISSION AND TORQUE CONVERTER CHARGING CIRCUIT

SUPPLY LINE

LEFT and RIGHT BRAKE PRESSURE

LEFT and RIGHT CLUTCH PRESSUREA

B

C

D

E

F

12345678

A

C

D

E

F

12345678

B

ENGINE

C-27580 HP AT1800 RPM

FLYWHEELHOUSING

TORQUECONVERTER

4 SECTION PTO PUMP

TORQUE CONVERTER SCAVENCE SECTION

TRANSMISSION SCAVENGE SECTION

TORQUE CONVERTER CHARGING SECTION

TRANSMISSION/TORQUE CONVERTER CHARGING

ER1

N

CL

DCBA

A

FILTER BYPASS

FANPUMP

IMPLEMENTPUMP

POWERTRAIN COOLER 2

POWERTRAIN COOLER 1

L2

FILTER A TRANSMISSION

CHARGING

FILTER BT/C CHARGING

TORQUE CONVERTERINLET RELIEF

B1

C1

PROPORTIONALVALVE

PROPORTIONALVALVE

PROPORTIONALVALVE

PROPORTIONALVALVE

PROPORTIONALVALVE

3RD 1ST2ND

REVFWD

CL2

CL3 CL5

CL1

CL4

PECPCXMSN

CLUTCHVALVE

TRANSMISSIONLUBE

TRANSFERGEAR LUBE

FILTER BYPASS

T/C OUT TEMPSENSOR - ECM

VENT

MAIN RELIEFNOTE F

CLUTCH

CASEBRAKE

P T

C1 C2

S2S1

TRANSMISSION

(SHOWN IN BRAKE OFF POSITION)

BRAKEPISTON

PIN PULLER ATTACHMENT

TRANSMISSIONSUMP

BRAKE VALVE

L1

M

P

THIS SCHEM ATIC IS FOR THE D10T TRACK-TYPE TRACTORPART #: 212-2749

Com ponents are shown installed on a fully operable m achine with the key and engine off and transm ission shifter in neutral.

LEFTLB1

LEFT BRAKEPRESSURE PORT

LEFT CLUTCHPRESSURE PORT

RIGHT

LB2 RIGHT BRAKEPRESSURE PORT

RIGHT CLUTCHPRESSURE PORT

M

L1

TP

AA

LINE PATTERNS

Drain / Return Lines

Com ponent Group

Pilot / Load Sensing Pressure

Pressure Line

Attachm ent

Air Line

CALLOUTS

Taps (Pressure, Sam pling,Sensor) by letter

Com ponents by num ber

YY

52

M1

B2 C2

MP L1

19

14

15

2

9

18

8

9

3

15

17

4

7

1

10

11

6

5

12

13

20