Tractor d6n [PDF]

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Part Number Implement

Description

Machine Location

Schematic Location

243-4398

1

B-3

Control Gp - Transmission Hydr.

365-1297

2

B-2

Core As - Cooler (Power Train Oil)

388-5240

3

D-1

8s-9129

4

B-4

Filter As - Bypass Switch

341-6644

5

D-7

Filter Gp - Oil Power Train

332-8833

6

D-6

Manifold Gp - Thermo Bypass

126-0747

7

D-2

Manifold Gp - Transmission (Lubr. Distribution)

258-7335

8

C-3

Pump Gp - Power Train Oil

202-4365

9

B-2

N/A

10

B-4

Valve - relief, Main

365-6807

11

D-6

Valve Gp - Modulating (Transmission Clutch)

244-3114

12

C-6

6y-8473

13

D-2

201-7274

14

D-5

Screen - Suction (Transmission)

FLUID POWER SYMBOLS

R2

BASIC COMPONENT SYMBOLS

Accumulator Gp - Pilot Oil (Charged)

Filter - Magnetic (Transmission)

UENR0059-02 December 2013

MAIN

R1

PUMP OR MOTOR

FLUID CONDITIONER

SPRING

CONTROL VALVES

VARIABILITY

SPRING (ADJUSTABLE)

LINE RESTRICTION (VARIABLE)

PRESSURE COMPENSATION

ONE POSITION

TWO POSITION

Valve Gp - Steering and Brake Control

HYDRAULIC PNEUMATIC ENERGY TRIANGLES

AUX

PUMP (2 - SECTION)

PUMP (VARIABLE & PRESSURE COMPENSATED)

LINE RESTRICTION (VARIABLE & PRESSURE COMPENSATED)

ATTACHMENT

VALVE PORTS

THREE POSITION

TWO - WAY

THREE - WAY

CONTROL VALVES AB

FOUR - WAY

CHECK VALVES

A B

P T

Valve Gp - Relief (T/C Output)

LINE RESTRICTION (FIXED)

VALVES

VALVE ENVELOPES

R3

RESTRICTION

P T

NORMAL POSITION

SHIFTED POSITION

BASIC SYMBOL

INFINITE POSITION

SPRING LOADED

SHUTTLE

PILOT CONTROLLED

FLUID STORAGE RESERVOIRS

N/A = Not available at time of publication.

D6N and D6N LGP OEM Track-Type Tractor Power Train System

LEFT SIDE

P6

Tap Locations Pressure and Sampling Tap Number

SOS

D6N: PBA1-UP PER1-UP

Schematic Location

Description

PRESSURIZED

VENTED

RETURN ABOVE FLUID LEVEL

RETURN BELOW FLUID LEVEL

ROTATING SHAFTS

MEASUREMENT

PRESSURE

TEMPERATURE

FLOW

UNIDIRECTIONAL

BIDIRECTIONAL

COMBINATION CONTROLS

D6N LGP OEM: SC61-UP

SOLENOID

SOLENOID OR MANUAL

SOLENOID & PILOT

SOLENOID & PILOT OR MANUAL

SERVO

THERMAL

DETENT

MANUAL CONTROL SYMBOLS

Remote Pressure Ports R1

T/C Inlet Pressure

C-3

R2

T/C Outlet Pressure

D-2

R3

Brake Pressure

D-4

PUSH - PULL LEVER

GENERAL MANUAL

MANUAL SHUTOFF

PUSH BUTTON

PEDAL

PILOT CONTROL SYMBOLS

RELEASED PRESSURE

SPRING

REMOTE SUPPLY PRESSURE

Local Pressure Ports CL1

Forward Clutch Pressure

C-7

CL2

Reverse Clutch Pressure

C-7

CL3

Third Gear Clutch Pressure

C-7

CL4

Second Gear Clutch Pressure

C-7

CL5

First Gear Clutch Pressure

C-7

P6 P12

Transmission Main Relief Transmission Lube Pressure

D-7 D-6

SOS

Oil Sample Port

D-6

B1

LH Brake Pressure

E-5

B2

RH Brake Pressure

B-5

LB1

LH Brake Lube Pressure

E-5

LB2

RH Brake Lube Pressure

B-5

EXTERNAL RETURN

INTERNAL RETURN

SIMPLIFIED

COMPLETE

CROSSING & JOINING LINES

ACCUMULATORS

INTERNAL SUPPLY PRESSURE

HYDRAULIC & PNEUMATIC CYLINDERS

P12 SPRING LOADED

GAS CHARGED

LINES CROSSING

HYDRAULIC MOTORS

HYDRAULIC PUMPS FIXED DISPLACEMENT

REAR

TAP LOCATIONS

© 2013 Caterpillar, All Rights Reserved

SINGLE ACTING

LINES JOINING

VARIABLE DISPLACEMENT NON-COMPENSATED

FIXED DISPLACEMENT

INTERNAL PASSAGEWAYS INFINITE POSITIONING

VARIABLE DISPLACEMENT NON-COMPENSATED

UNIDIRECTIONAL

UNIDIRECTIONAL

BIDIRECTIONAL

BIDIRECTIONAL

DOUBLE ACTING

3 POSITION

FLOW IN ONE DIRECTION

PARALLEL FLOW

CROSS FLOW

2 POSITION

FLOW IN EITHER DIRECTION

Printed in U.S.A.

ELECTRICAL SYMBOLS TABLE HYDRAULIC SYMBOLS (ELECTRICAL)

G

12

14 1

13

M

TRANSDUCER (FLUID)

TRANSDUCER (GAS / AIR)

GENERATOR

ELECTRIC MOTOR

PRESSURE SWITCH

PRESSURE SWITCH (ADJUSTABLE)

TEMPERATURE SWITCH

ELECTRICAL WIRE

7

5

ELECTRICAL SYMBOLS (ELECTRICAL)

6

T

CL3 PRESSURE SWITCH

TEMPERATURE SWITCH

LEVEL SWITCH

FLOW SWITCH

CL4 WIRE NUMBER IDENTIFICATION CODES

CL1

ELECTRICAL SCHEMATIC EXAMPLE

HYDRAULIC SCHEMATIC EXAMPLE

CURRENT STANDARD

CURRENT STANDARD

HARNESS IDENTIFICATION CODE THIS EXAMPLE INDICATES WIRE 135 IN HARNESS “AG”

3

CL2

WIRE CIRCUIT NUMBER IDENTIFICATION

325-AG135 PK-14

CL5

9

B2

4

CIRCUIT NUMBER IDENTIFICATION

WIRE GAUGE

325-PK

PREVIOUS STANDARD

10 WIRE

LB2

WIRE COLOR

WIRE COLOR

B

325-PK-14

CIRCUIT NUMBER IDENTIFICATION

POWER TRAIN

WIRE COLOR

WIRE GAUGE

A

(EXAMPLE VALVE)

(Dimensions: 34 inches x 24 inches)

11

16 Page,

8

B1

UENR0059-02

LB1

7

6

E

5

4

3

2

1

E

LB1

B1

(6) FILTER AS - POWER TRAIN: 332-8833 (7) MANIFOLD GP THERMO BYPASS 126-0747

AIR TO OIL COOLER

(5) SWITCH - FILTER BYPASS: 341-6644

TRANS LUBE

D

(3) CORE AS - OIL COOLER 388-5240

(13) VALVE GP - RELIEF CONVERTER OUTLET 6Y-8473

(14) VALVE GP STEERING / BRAKE CONTROL 201-7274

D

R2

P6 SOS

EB BRAKE VALVE

(11) VALVE GP - RELIEF (MAIN) 365-6807

P12 BREATHER

PROPORTIONAL VALVE (1ST)

CL4 PROPORTIONAL VALVE (2ND)

C

ECPC XMSN CLUTCH VALVES NOTE C

CL3 PROPORTIONAL VALVE (3RD)

CL2

R3 TORQUE CONVERTER

FLYWHEEL HOUSING

BEVEL and TRANSFER GEAR LUBE

CL5

ENGINE C

R1

PROPORTIONAL VALVE (FWD)

(12) VALVE - MODULATING: 244-3114

CL1

(Dimensions: 34 inches x 24 inches)

16 Page,

UENR0059-02

PROPORTIONAL VALVE (REV)

ER1 - Engine Speed

(8) MANIFOLD GP TRANSMISSION LUBR. DISTRIBUTION 258-7335

LOW

HIGH

SCAV

(10) SCREEN - SUCTION

Transmission

B

(1) ACCUMULATOR AS PILOT OIL (CHARGED) 243-4398

(2) CONTROL GP - TRANSMISSION: 365-1297

B

(9) PUMP GP. - POWER TRAIN OIL: 202-4365

HYDRAULIC CIRCUIT COLOR DESCRIPTIONS LOW PUMP OUTPUT PRESSURE LUBRICATION CIRCUIT SCAVENGE PUMP SUPPLY LINE BRAKE CIRCUIT DRAIN / RETURN LINE HIGH PUMP OUTPUT PRESSURE

R1

(4) FILTER - MAGNETIC 8S-9129

LINE PATTERNS

R2

Pressure Line Pilot / Load Sensing Pressure Drain / Return Lines Component Group

B2

Attachment

LB2

R3

Air Line

CALLOUTS

A

REMOTE PRESSURE TAPS PANEL (RIGHT FENDER)

YY

Taps (Pressure, Sampling, Sensor - by letter)

52

Components (By number)

D6N AND D6N LGP OEM TRACK-TYPE TRACTOR POWER TRAIN SYSTEM MEDIA NUMBER: UENR0059-02 SCHEMATIC PART NUMBER: 390-3782, CHANGE: X1, VERSION: Components are shown installed on a fully operable machine with the key and engine off, transmission shifter in neutral and with parking brake set. Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations. Note: Refer to the Parts Manual using a specific serial number prefix in SIS before ordering parts from this schematic.

7

6

5

4

3

2

1

A