RE

NR

9009-0

5 V

OL

1 o

f 2

30

Pa

ge

, (D

ime

ns

ion

s:

39

in

ch

es

x 2

8 i

nc

he

s)

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

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

SOLENOID or MANUAL

SOLENOID and 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

T

©2010 CaterpillarAll Rights Reserved

Printed in U.S.A.

RENR9009-05June 2010

140M and 160M Motor GraderHydraulic System140M:B9D1-UPB9M1-UPB9G1-UPD9G1-UP

160M:B9E1-UPB9L1-UPB9T1-UPD9T1-UP

Volume 1 of 2: Machine Systems

SERVICE BRAKES COMPONENT LOCATIONS

FAN / BRAKE CONTROLIMPLEMENT / STEERING CIRCUIT

EE

FWD

FF

(LH)

(RH)

LH VIEW

33

19

23 AA

BB

S0S1

15

1519DD

38

10

11

12 14

2640

2741

181

7

6

9817

13

32 20452

5 2843

44

34

243 33

21

2538

3619

31

42 2322 16 37

34

1012

11

14

2640

181

76

98

17

13 32 20452

4127 34

2843

44

24

316

33

3619

37

21

254215

38 2322

34

SOS2

CC

39

29

29

39

31

15

30

30

Tap LocationsPressure, Sampling, and Sensor

TapNumber Description Schematic

LocationAA Implement / Steering Pump Load Sense B-6BB Implement / Steering Pump Pressure B-5CC Pilot Supply Pressure B-5DD Fan Motor Supply Pressure A-3EE Service Brake LH Pressure D-1FF Service Brake RH Pressure D-1

SOS 1 Hydraulic Oil Sampling B-6SOS 2 Hydraulic Oil Sampling B-5

Description PartNumber

SchematicLocation

MachineLocation

Accumulator Gp - Blade Cushion 219-7265 D-4 , D-5 1Accumulator Gp - Brake 249-3860 B-2 2Breather Assembly 9R-9925 B-8 3Control Gp - Brake Pedal 301-4129 D-1 , E-1 4Cylinder Gp - Articulation 247-0096 D-6 5Cylinder Gp - Blade Lift 262-1900 D-5 6Cylinder Gp - Blade Lift 262-1900 D-4 7Cylinder Gp - Blade Tip 131-3191 F-3 8Cylinder Gp - Center Shift 262-1907 F-4 9Cylinder Gp - LH Steering 276-5682

(AWD) 262-5766Cylinder Gp - RH Steering 255-8715

(AWD) 262-5766Cylinder Gp - Ripper Lift 113-7754 D-7 11Cylinder Gp - Side Shift 260-6502 F-4 13Cylinder Gp - Wheel Lean 249-5299 F-6 14Filter Gp - Pilot 191-9784 B-4 15Filter Gp - Return 249-2307 A-8 16Lock Gp - Center Shift 298-2600 D-4 17Manifold Gp - Control Blade Cushion 253-1320 D-5 18Manifold Gp - Pilot Shutoff Solenoid 263-1790 B-5 19Motor Gp - Circle Drive 105-3196 F-5 20Motor Gp - Fan 250-9831 A-3 21Pump Gp - Fan / Brake 250-8337 B-7 22Pump Gp - Implement / Steering 236-7296 B-6 23Pump Gp - Secondary Steer 273-8714 A-6 24Screen - Fan / Brake Control 6E-5066 B-3 25Screen - Implement Control Valve (Front) 250-1420 E-3 26Screen - Implement Control Valve (Rear) 250-1420 C-4 27Screen - Steer Pilot Manifold Valve 6E-5066 C-2 28Sensor Gp - Pressure (Brake Accumulators) 237-0957 B-3 29Sensor Gp - Pressure (Secondary Steering) 237-0957 B-6 30Switch As - Pressure (Pilot Filter Bypass) 7X-8549 B-5 31Swivel - Blade 260-6502 F-4 32Tank Gp - Hydraulic Oil 241-3867 B-7 33Valve - Shuttle (Load Signal Resolver) 6R-7605 B-3 34Valve Gp - Check (E) 193-9230 B-5 35Valve Gp - Check (Implement / Steer) 255-3631 B-6 36Valve Gp - Check (Secondary Steer) 9T-1013 A-5 37Valve Gp - Cooler Bypass 266-1595 A-4 38Valve Gp - Fan / Brake Control 251-8256 A-3 39Valve Gp - Implement Control (Front) (5-BANK) 248-6168

(6-BANK) 249-7295(7-BANK) 249-5328

Valve Gp - Implement Control (Rear) (4-BANK) 249-7298(6-BANK) 291-9517

Valve Gp - Relief (Secondary Steer) 9T-8071 A-5 42Valve Gp - Steering Control 308-0934 D-2 43Valve Gp - Steering Pilot Manifold 254-3415 C-1 44

F-2 thru F-8 40

C-4 thru C-8 41

Component Locations

D-3 10

E-2 12

RE

NR

9009-0

5 V

OL

1 o

f 2

30

Pa

ge

, C

olo

r 2

(D

ime

sio

ns

39

In

ch

es

X 2

8 I

nc

he

s)

THIS SCHEMATIC IS FOR THE 140M & 160M Motor Grader (Volume1)PART #: 266-1591 CH03 (140M) & 236-8830 CH06 (160M)Components are shown installed on a fully operable machine with the key and engine off and transmission shifter in neutral.

LINE PATTERNS

Drain / Return Lines

Component Group

Pilot / Load Sensing Pressure

Pressure Line

Attachment

Air Line

CALLOUTS

Taps (Pressure, Sampling,Sensor) by letter

Components by number

YY

52

Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations

DRAIN / RETURN LINE

LINES GROUP COLOR DESCRIPTIONSIMPLEMENT & STEERING PUMP OUTPUT

FAN & BRAKE PUMP OUTPUT

STEERING CYLINDER CONTROL CIRCUIT

SECONDARY STEERING PUMP OUTPUT

SIDE SHIFT CYLINDER CONTROL CIRCUIT

CENTERSHIFT LOCK CONTROL CIRCUIT

SUPPLY LINE

PILOT SHUTOFF CIRCUIT

WHEEL LEAN CYLINDER CONTROL CIRCUIT

CIRCLE DRIVE MOTOR CONTROL CIRCUIT

CENTERSHIFT CYLINDER CONTROL CIRCUIT

ARTICULATION CYLINDER CONTROL CIRCUITSERVICE BRAKE CONTROL CIRCUIT

BLADE LIFT CYLINDER CONTROL CIRCUITS

BLADE TIP CYLINDER CONTROL CIRCUIT

IMPLEMENT & STEERING LOAD SENSE CIRCUITS

RIPPER LIFT CYLINDER CONTROL CIRCUIT

SNOW WING & PLOW CYLINDER CONTROL CIRCUITS

12345678

A

C

D

E

F

12345678

A

B

C

D

E

F

B

BB CCAA

DD

FF

EE

SOS2

SOS1

)(

)(

LS

P

T

A1

PS

A2

FAN/BRAKE PUMP

CENTER SHIFTLOCK

EF

P LS T

Ts

Ps

LE

RE

L

R

CL CR

TANK GPHYDRAULIC241-3867

BREATHER AS9R-9925

PUMP GPIMPLEMENT/STEERING236-7296

PUMP GPFAN/BRAKE250-8337

PUMP GPSECONDARYSTEER273-8714

ACCUMULATOR GPCE BRAKE249-3860249-3862 (CE)

VALVE GPFAN/BRAKECONTROL251-8256

SCREEN(FAN/BRAKECONTROL)6E-5066

SCREEN(STEER PILOTMANIFOLDVALVE)6E-5066

VALVESHUTTLE(LOAD SIGNALRESOLVER)6R-7605

VALVE GPSTEERING PILOTMANIFOLD254-3415

SWIVELBLADE260-6502

CYLINDER GPBLADE TIP131-7191

CYLINDER GPSIDE SHIFT249-4116

CYLINDER GPCENTER SHIFT262-1907

CYLINDER GPWHEEL LEAN249-5299

MOTOR GPCIRCLE DRIVE105-3196

CYLINDER GPBLADE LIFT (RH)262-1900

CYLINDER GPBLADE LIFT (LH)262-1900

CYLINDER GPARTICULATE247-0096

IMPLEMENT/STEERING

BLADE LIFT (LEFT) BLADE LIFT (RIGHT)ARTICULATION

BLADE TIPSIDE SHIFTCENTER SHIFTCIRCLE DRIVEWHEEL LEAN

LOCK GPCENTER SHIFT298-2600

VALVE GP 249-7298 (4-BANK)291-9517 (6-BANK)

SCREENFRONT IMPLEMENTCONTROL VALVE250-1420

VALVE GPCHECK (IMP/STEER)255-3631

VALVE GPCHECK(SEC STEER)9T-1013

SCREENREAR IMPLEMENTCONTROL VALVE250-1420

ACCUMULATORBLADE CUSHION219-7265

ACCUMULATORBLADE CUSHION219-7265

MANIFOLD GPBLADE CUSHION253-1320

MANIFOLD GPBLADE CUSHION253-1320

PLOW LIFT (7-BANK)

FILTER GPRETURN249-2307

MANIFOLD GPPILOT SHUTOFFSOLENOID263-1790

FILTER GPPILOT191-9784

VALVE GPRELIEF(SEC STEER)9T-8071

VALVE GPCHECK(E)193-9230

VALVE GPCOOLERBYPASS266-1595

MOTOR GPFAN250-9831

CONTROL GPBRAKE PEDAL301-4129

VALVE GPSTEERINGCONTROL308-0934

CYLINDER GPRH STEERING255-8715262-5766 (AWD)

CYLINDER GPLH STEERING255-8715262-5766 (AWD)

VALVE GPIMPLEMENTCONTROL(FRONT)248-6168 (5-BANK)249-7295 (6-BANK)SCARIFIER249-5328 (7-BANK)PLOW

PLOW ANGLE (7-BANK)

RIPPERWING LIFT (6-BANK)WING TILT (6-BANK)

CYLINDER GPRIPPER LIFT113-7754

B A B A B A B A B A B A B A

B A B A B A B A B A B A

PLOW LIFT CYLINDERPLOW ANGLE CYLINDER

WING LIFT CYLINDERWING TILT CYLINDER

SCARIFIER (6-BANK)OR

REMOVED (6-BANK)OR

SCARIFIERCYLINDERS NOT

SHOWN

BLADECUSHIONATTCH

BLADECUSHIONATTCH

TO AWD PUMP

TO AWD PUMP

LOC VOL 2 SEC B-1

LOC VOL 2 SEC B-1

FROM AWD MOTORSLOC VOL 2 SEC C-1

SENSOR GPPRESSURESEC STEERING237-0957

SENSOR GP-PRESSUREBRAKE ACC: 237-0957

FROM AWD PUMPSLOC VOL 2 SEC B-1

SWITCH ASPRESSUREPILOT FILTERBYPASS7X-8549

SENSOR GPTEMP: 264-4297

RE

NR

9009-0

5 V

OL

2 o

f 2

30

Pa

ge

, (D

ime

ns

ion

s:

39

in

ch

es

x 2

8 i

nc

he

s)

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

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

SOLENOID or MANUAL

SOLENOID and 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

T

©2010 CaterpillarAll Rights Reserved

Printed in U.S.A.

RENR9009-05June 2010

140M and 160M Motor GraderHydraulic System140M:B9D1-UPB9M1-UPB9G1-UPD9G1-UP

160M:B9E1-UPB9L1-UPB9T1-UPD9T1-UP

Volume 2 of 2: All Wheel Drive

AWD CONTROL MANIFOLD COMPONENT LOCATIONS

ALL WHEEL DRIVE PUMP GROUP

B2G A2G A1G B1GPS2 PS1

P

B2 B1

A2 A1

LEFT REVSOLENOID

LEFT FWDSOLENOID

RIGHT REVSOLENOID

RIGHT FWDSOLENOID

CONTROL RTSOLENOID

CONTROL LTSOLENOID

AWD CHARGE FILTERS

11

21

B1A1A2B2 3

8 7

12

6

NN

LL

REAR CHARGEPUMP (RS)

FRONT CHARGEPUMP (LS)

6

REAR PISTONPUMP (RS)

FRONT PISTONPUMP (LS)

2 1

21

FWD

54

5

4

612

12 6

6 6

3

3

7 8

7 8

9

91110

1110

910

Tap LocationsPressure, Sampling, and Sensor

TapNumber Description Schematic

LocationA1 LH Motor Forward Pressure E-4A2 RH Motor Reverse Pressure E-4B1 RH Motor Forward Pressure E-6B2 LH Motor Reverse Pressure E-6LL Front Charge Pump Pressure C-5NN Rear Charge Pump Pressure C-4

AA

VIEW A-A

Description PartNumber

SchematicLocation

MachineLocation

Filter Gp - Charge (Front Pump) 196-1803 C-5 1Filter Gp - Charge (Rear Pump) 196-1803 D-3 2Manifold Gp - Control (AWD) 294-1109 E-5 3Motor Gp - LH Front AWD 287-1893 E-7 4Motor Gp - RH Front AWD 287-1893 E-2 5Pump Gp - All Wheel Drive 246-4490 C-3 thru C-6 6Sensor Gp - Pressure (LT AWD Sensor Control) 214-6863 D-5 7Sensor Gp - Pressure (RT AWD Sensor Control) 214-6863 E-5 8Sensor Gp - Temperature 264-4297 C-1 9Switch As - Pressure (Oil Filter Bypass) 134-0404 D-3 10Switch As - Pressure (Oil Filter Bypass) 134-3404 C-5 11Valve Gp - Thermal Bypass 188-8726 C-2 12

Component Locations

RE

NR

9009-0

5 V

OL

2 o

f 2

30

Pa

ge

, C

olo

r 2

, (D

ime

ns

ion

s:

39

in

ch

es

x 2

8 i

nc

he

s)

DRAIN / RETURN LINE

HYDRAULIC CIRCUIT COLOR DESCRIPTIONSFRONT CHARGE PUMP OUTPUT

REAR CHARGE PUMP OUTPUT

REAR AWD PUMP AND RIGHT MOTOR CONTROL CIRCUITFRONT AWD PUMP AND LEFT MOTOR CONTROL CIRCUIT

SUPPLY LINE

FRONT WHEEL BRAKE CONTROL CIRCUIT

THIS SCHEMATIC IS FOR THE 140M & 160M Motor Grader (Volume2)PART #: 266-1591 CH03 (140M) & 236-8830 CH06 (160M)Components are shown installed on a fully operable machine with the key and engine off and transmission shifter in neutral.

LINE PATTERNS

Drain / Return Lines

Component Group

Pilot / Load Sensing Pressure

Pressure Line

Attachment

Air Line

CALLOUTS

Taps (Pressure, Sampling,Sensor) by letter

Components by number

YY

52

Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations

12345678

A

C

D

E

F

12345678

A

B

C

D

E

F

B

NNLL

MOTOR GPLH FRONT AWD287-1893

MOTOR GPRH FRONT AWD287-1893

MANIFOLD GPCONTROL (AWD)294-1109

PUMP GPALL WHEEL DRIVE246-4490

FILTER GPCHARGEFRONT PUMP196-1803

FILTER GPCHARGEREAR PUMP 196-1803

VALVE GPTHERMAL BYPASS188-8726

B2

B1 A1

A2

FROM TANK

U

A

max min

L

B

Z

Y

P(S) L S(P) Mp

FX

P(S) L S(P) Mp

FX

B B

U A AU

Z

Y

T

Ms

T

Ms

A

U

B1

B1

C1

T1

B2

B2

C2

ML

A1

A1

MR

T

A2

A2

P

max min

L

B

FROM TANK

TO RTN MANIFOLD

)(

)(

X

E

E

X

LOC VOL 1 SEC A-8

LOC VOL 1 SEC A-8

LOC VOL 1 SEC A-6

B2G

B1G

A2G

A1G

RIGHTCONT

LEFTCONT

RIGHT

LEFT

REVFWD

FWDREV

PS2

PS1

SENSOR GPPRESSUREAWD SENSOR CONTRIGHT214-6863

SENSOR GPPRESSUREAWD SENSOR CONTLEFT214-6863

SENSOR GPTEMPERATURE264-4297

TO COOLER INLETLOC VOL 1 SEC A-4

FRONTPISTONPUMP

REARPISTONPUMP

FRONTCHARGEPUMP

REARCHARGEPUMP

SWITCH ASPRESSUREOIL FILTERBYPASS134-0404

SWITCH ASPRESSUREOIL FILTERBYPASS134-0404