INTERACTIVE SCHEMATIC

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Cover PageInformation

SchematicMachine Views

Component TableTap Table

Fluid Power Symbols

Electrical Symbols

Front Frame

Rear Frame

Tap Views

Features

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Bookmarks X

EC-C3EC-C2 E-C60

EC-C1

E-C61

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©2010 Caterpillar, All Rights Reserved Printed in U.S.A.

RENR9028-02November 2010

14M Motor GraderHydraulic SystemB9J1-UPR9J1-UP

COMPONENT LOCATION

PartNumber

MachineLocation

SchematicLocation

Accumulator GP - Blade Cushion 219-8035 1 D-6

Accumulator GP - Brake 249-3860 2 B-2

Breather AS 9R-9925 3 B-8

Control GP - Brake Pedal 301-4129 4 D-1

Cylinder GP - Articulation 303-9598 5 D-8

Cylinder GP - Blade Lift 270-7536 6 D-6

Cylinder GP - Blade Tip 9T-8944 7 F-4

Cylinder GP - Center Shift 262-1906 8 F-5

Cylinder GP - LH Steering 276-5682 9 E-3

Cylinder GP - RH Steering 276-5681 10 E-3

Cylinder GP - Ripper Lift 113-5264 11 F-8

Cylinder GP - Side Shift 257-5083 12 F-5

Cylinder GP - Wheel Lean 249-5299 13 F-7

Filter GP - Pilot 191-9784 14 B-4

Filter GP - Return 249-2307 15 A-8

Lock GP - Center Shift 298-2600 16 D-5

Manifold GP - Control Blade Cushion 253-1320 17 D-7

Manifold GP - Pilot Shutoff Solenoid 263-1790 18 B-5

Motor GP - Circle Drive 9T-5977 19 F-6

Motor GP - Fan 250-9831 20 A-3

Pump GP - Fan / Brake 250-8337 21 B-7

Pump GP - Implement / Steering 246-4486 22 B-6

Pump GP - Secondary Steering 273-8714 23 A-6

Screen - Implement Control Valve (Front) 250-1420 24 E-3

Screen - Implement Control Valve (Rear) 250-1420 25 C-5

Screen - Steering Pilot Manifold Valve 6E-5066 26 C-2

Swivel - Blade 260-6502 27 F-4

Tank GP - Hydraulic Oil 241-3867 28 B-8

Valve - Shuttle (Load Signal Resolver) 6R-7605 29 B-4

Valve GP - Check (E) 193-9230 30 B-5

Valve GP - Check (Implement / Steering) 255-3631 31 B-6

Valve GP - Check (Secondary Steering) 9T-1013 32 A-5A-4Valve GP - Cooler Bypass 266-1595 33

Valve GP - Fan / Brake Control 251-8256 34 A-3

(5-Bank) 259-6919(6-Bank) 291-9518

Valve GP - Implement Control (Rear) 259-6923 36 C-5

Valve GP - Relief (Secondary Steering) 9T-8071 37 A-5

Valve GP - Steering Control 308-0935 38 D-2

Valve GP - Steering Pilot Manifold 254-3415 39 C-2

Description

Valve GP - Implement Control (Front) 35 E-5

TAP LOCATION

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-2FF Service Brake RH Pressure C-2

SOS Hydraulic Oil Sampling B-5

FLUID POWER SYMBOLS

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

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

ELECTRICAL SYMBOLSHydraulic Symbols (Electrical)

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)

T

F8

E8

D8

C8

B8

A8

F7

E7

D7

C7

B7

A7

F6

E6

D6

C6

B6

A6

F5

E5

D5

C5

B5

A5

F4

E4

D4

C4

B4

A4

F3

E3

D3

C3

B3

A3

F2

E2

D2

C2

B2

A2

F1

E1

D1

C1

B1

A1LINE PATTERNS

Drain / Return Lines

Component Group

Pilot / Load Sensing Pressure

Pressure Line

CALLOUTS

Taps (Pressure, Sampling,Sensor) by letterYY

DRAIN / RETURN LINE

LINES GROUP COLOR DESCRIPTIONSIMPLEMENT AND STEERING PUMP OUTPUT

FAN AND BRAKE PUMP OUTPUT

STEERING CYLINDER CONTROL CIRCUIT

SUPPLEMENTAL 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 AND STEERING LOAD SENSE CIRCUIT

RIPPER LIFT CYLINDER CONTROL CIRCUIT

Components are shown installed on a fully operable machine with the key and engine off, transmission shifterin neutral and with parking brake set.Refer to the appropriate Service Manual for Troubleshooting, Specifications and Systems Operations.

THIS SCHEMATIC IS FOR THE 14M MOTOR GRADERPART NUMBER: 236-8831, CHANGE: 04, VERSION: -

12345678

A

C

D

E

F

12345678

A

B

C

D

E

F

B

BB CCAA

SOS

DD

FF

EE

NOTE A: COMPONENT PART OF EU ATTACHMENTNOTE C: COMPONENT PART OF BLADE CUSHION ATTACHMENT

LS

P

T

A1

PS

A2

FAN/BRAKE PUMP

EF

P LS T

Ts

Ps

LE

RE

L

R

CL CR

(28) TANK GPHYDRAULIC OIL241-3867

(3) BREATHER AS9R-9925

(22) PUMP GPIMPLEMENT/

STEERING246-4486

(21) PUMP GPFAN / BRAKE

250-8337

(23) PUMP GPSECONDARY STEERING

273-8714

(2) ACCUMULATOR GPBRAKE249-3860(NOTE A: EU BRAKES 249-3862)

(34) VALVE GPFAN/BRAKE CONTROL251-8256

SCREEN(FAN/BRAKE

CONTROL)6E-5066

(26) SCREEN(STEERING PILOTMANIFOLD VALVE)6E-5066

(29) VALVESHUTTLE

(LOAD SIGNAL RESOLVER)6R-7605

(39) VALVE GPSTEERING PILOT MANIFOLD254-3415

(27) SWIVELBLADE

260-6502

(7) CYLINDER GPBLADE TIP9T-8944

(12) CYLINDER GPSIDE SHIFT

257-5083

(8) CYLINDER GPCENTER SHIFT262-1906

(13) CYLINDER GPWHEEL LEAN249-5299

(19) MOTOR GPCIRCLE DRIVE9T-5977

(6) CYLINDER GPBLADE LIFT

270-7536

(6) CYLINDER GPBLADE LIFT

270-7536

(5) CYLINDER GPARTICULATION

303-9598

IMPLEMENT/STEERING

BLADE LIFT BLADE LIFTARTICULATION

BLADE TIPSIDE SHIFTCENTER SHIFTCIRCLE DRIVEWHEEL LEAN

(16) LOCK GPCENTER SHIFT

298-2600

(36) VALVE GPIMPLEMENT CONTROL (REAR)259-6923

(24) SCREENIMPLEMENT CONTROLVALVE (FRONT)250-1420

(31) VALVE GPCHECK (IMPLEMENT/STEERING)

255-3631

(32) VALVE GPCHECK(SECONDARY STEERING)9T-1013

(25) SCREENIMPLEMENT CONTROL

VALVE (REAR)250-1420

(1) ACCUMULATOR GPBLADE CUSHION

(NOTE C)219-8035

(17) MANIFOLD GPBLADE CUSHION (NOTE C)

253-1320

RIPPER LIFT

(11) CYLINDER GPRIPPER LIFT

113-5264

(15) FILTER GPRETURN249-2307

(18) MANIFOLD GPPILOT SHUTOFF

SOLENOID263-1790

(14) FILTER GPPILOT191-9784

(37) VALVE GPRELIEF (SECONDARY STEERING)9T-8071

(30) VALVE GPCHECK (E)193-9230

(33) VALVE GPCOOLER BYPASS266-1595

(20) MOTOR GPFAN250-9831

(4) CONTROL GPBRAKE PEDAL301-4129

(38) VALVE GPSTEERING CONTROL308-0935

(10) CYLINDER GPRH STEERING276-5681

(9) CYLINDER GPLH STEERING

276-5682

(35) VALVE GPIMPLEMENT CONTROL (FRONT)

259-6919 (5-BANK)291-9518 (6-BANK)

MACHINE COMPONENT LOCATIONS

39

39

38

38

37

37

36

36

35

35

33

33

32

32

31

31

30

30

29

29

27

27

26

26

25

25

24

24

23

23

21

21

20

20

19

19

17

17

16

16

15

15

13

13

12

12

11

11

10

10

9

9

8

8

7

7

6

6

6

5

5

5

4

4

3

3

2

2

1

1

FAN / BRAKE CONTROL

DD

34

IMPLEMENT - STEERING CIRCUIT

FWD

SOS

CCBBAA

28

22

18

14

SERVICE BRAKES

LH VIEW

EE FF