7/30/2019 Hidraulico 135H CBC

1/2

RENR4162-0

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30Page

RENR4162-02July2005

120H and 135H Motor GraderHydraulic System

120H:1241-UPCAF1-UPALZ1-UP

135H:CBC1-UPAMX1-UP

2005Caterpillar

AllRightsReserved

PrintedinU.S.A.

16

Combination Valve

Hydraulic & Steering System

CC

BB

Implement SupplyLines

ImplementDrain Lines Implement

Supply Lines

ImplementSignal Lines

Steering PumpSupply

ONE POSITION TWOPOSITION THREE POSITION

V EN TE D P RE SS UR IZ ED R ET UR N AB OV E FL UI DL EV EL R ET UR N BE LO WF LU ID LE VE L

LINES CROSSING LINES JOINING

TWO-WAY THREE-WAY FOUR-WAY

S P RI N G C ON T RO L VA LV E S RESTRICTION LINE RESTRICTION

(FIXED)

2-SECTIONPUMP

MAIN AUX.

SPRING

(ADJUSTABLE)

VARIABILITY LINE RESTRICTION

(VARIABLE)

LINE RESTRICTIONVARIABLE andPRESSURE

COMPENSATED

PRESSURE

COMPENSATION

PUMP:VARIABLE and

PRESSURE COMPENSATED

ENERGY TRIANGLES

HYDRAUL IC PNEUMA TIC

MEASUREMENT

PRESSURE TEMPERATURE FLOW

ROTATING SHAFTS

UNIDIRECTIONAL BIDIRECTIONAL

PUSH-PULL LEVER PEDALGENERAL MANUAL PUSH BUTTON SPRING

MANUAL CONTROL SYMBOLS

HYDRAULICMOTORS

FIXED

DISPLACEMENTVARIABLE DISPLACEMENT

NON-COMPENSATED

UNIDIRECTIONAL

BIDIRECTIONAL

HYDRAULICPUMPS

FLUIDSTORAGE RESERVOIRS

CROSSING ANDJOINING LINES

VALVE ENVELOPES VALVE PORTS

BASICCOMPONENT SYMBOLS

FLUIDCONDITIONERPUMP orMOTOR

FLUID POWER SYMBOLS

FIXED

DISPLACEMENT

VARIABLE DISPLACEMENT

NON-COMPENSATED

UNIDIRECTIONAL

BIDIRECTIONAL

VALVES

PILOT CONTROL SYMBOLSRELEASEDPRESSURE

EXTERNALRETURN INTERNALRETURN

REMOTE SUPPLY PRESSURE

SIMPLIFIED COMPLETE INTERNAL

SUPPLY PRESSURE

ACCUMULATORS

SPRING LOADED GAS CHARGED

SOLENOIDorMANUAL

SOLENOIDandPILOT

SOLENOIDandPILOTorMANUAL

COMBINATIONCONTROLS

SOLENOID SERVO THERMAL DETENT

HYDRAULICANDPNEUMATICCYLINDERS

DOUBLE ACTINGSINGLE ACTING

BASICSYMBOL

SPRINGLOADED

CHECK VALVES

TWO

POSITION

INFINITEPOSITIONING

FLOWINONEDIRECTION

FLOWALLOWEDINEITHER DIRECTION

THREEPOSITION

CROSSFLOW

PARALLELFLOW

INTERNAL PASSAGEWAYS

NORMALPOSITION

AB

PT

AB

PT

SHIFTEDPOSIT ION INFINITE POSITION

CONTROL VALVES

ATTACHMENT

MANUALSHUTOFF

SHUTTLE PILOTCONTROLLED

Hydraulic Symbols (Electrical)

Electrical Symbols Table

325-AG135PK-14

CircuitIdentificationNumber

WireColor WireGauge

HarnessidentificationcodeThisexampleindicateswire135inharness"AG".

325-PK-14

WireGauge

WireColor

CircuitNumber

Identification

Wire Number Identification Codes

CurrentStandard

Previous Standard

Electrical Schematic Example Hydraulic Schematic Example

325-PK

WireColorCircuitNumber

Identification

B A

Wire

Wire

(EXAMPLE VALVE)

CurrentStandard

Transducer(Fluid)

Transducer(Gas /Air)

G

Generator

ElectricalWirePressureS witch

MElectricMotor

PressureSwitch(Adjustable)

TemperatureSwitch

T

PressureSymbol

TemperatureSymbol

LevelSymbol

FlowSymbol

Electrical Symbols (Electrical)

DescriptionPart

Number

Machine

Location

Schematic

Location

Accumulator Gp -Blade Cushion 162-7450 1 E -9, E-2

Accumulator Gp - Steering 248-6251 2 B-4

Cylinder Gp - Articulation 198-8305 3 E-4

Cylinder Gp - Blade Lift 132-4926 4 E-9, E-1

Cylinder Gp - Blade Tip 131-7191 5 F-7

Cylinder Gp - Center Shift 262-1908 6 E-3

Cylinder Gp - Side Shift 112-5575 7 F-8

Cylinder Gp - Steering (LH) 130-9041 8 F-6

Cylinder Gp - Steering (RH) 130-9042 9 F-5

Cylinder Gp - Wheel Lean 121-9242 10 D-2

Motor Gp - Circle Drive 105-3196 11 E-7

Motor Gp - Hydraulic Fan 224-7040 12 B-3

Pump Gp - Hyd Fan 169-4883 13 B-7

Pump Gp - Imp / Steer 200-1934 14 A-6

Pump Gp - Metering 222-3769 15 D-5

Pump Gp -Secondary Steering 123-8867 16 A-4

Switch Gp -Fan Drive Pressure 167-1709 17 A-4

Switch Gp -Sec Steer Pressure 3E-6450 18 A-5

Swivel Gp 260-6502 19 E-8

TankGp-HydraulicOil 207-2410 20 B-9

Valve Gp - Bank 4- LH Control 6E-3038 21 D-9

Valve Gp - Bank 4- RH Control 6E-3032 22 C-3

Va lve Gp - Bla de Cus hio nS ole noid 253-1320 23 E -9, E- 2

Valve Gp - Check (Fan Drive) 175-0447 24 B-4

Valve Gp - Check (Sec Steer) 9T-1013 25 A-5

Valve Gp - Check (Sec Steer) 9T-6146 26 C-5

Valve Gp - Combination 9T-5957 27 B-5

Valve Gp - Fan Speed Sol 191-5292 28 B-8

Valve Gp - Relief (Sec Steer) 9T-8071 29 A-5

Valve Gp - Shuttle 131-0753 30 C-6

Cylinder Gp - Ripper 6E-4724 37 I-6

Cylinder Gp - Scarifier 112-5575 31 I-5

107-0547

130-3111

Valve Gp - PlowAngle 115-1007 33 H-3

119-9550

107-0545

107-0543

119-9549

Valve Gp - Snow Wing Lift 137-8106 35 H-8

Valve Gp - SnowWing Tilt 137-8104 36 H-7

Valve Gp -Accugrade Sol 239-9894 41 H-11, H-12

Component Locations

Attachments

H-432ValveGp-P low/Dozer

AccugradeAtt achments

Valve Gp - Ripper 38 H-6

Valve Gp - Scarifier 34 H-11

8

10

9

11

19

4

6

7

22

33

32

41

13

25

14 30

3

26

29

12 31

17

37

24

3

16

20

2 18 27

1 23

1 23

4

5

15

28

21 34 35 36

38 39 40 41

AA

28

Tap

NumberDescription

Schematic

Location

BB C-7

B-8

B-5

Implement&SteeringLoad SensingSignalPress ure

Tap Locations

Pressure, Sampling, and Sensor

C C P um pS up pl y Pr es su re ( Imp le me nt / S te er in g)

AA Pump OutputPressure (Fan)

VIEW OF AREA A

Hydraulic Fan Drive System

7/30/2019 Hidraulico 135H CBC

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RENR4162-0

2

30Page,

Color2

HYDRAULIC CIRCUIT COLOR DESCRIPTIONS

Implement&S teeringPump Output.

SecondarySteering PumpOutput.

SteeringMetering PumpOutput andCylinderCircuit.

SnowWingLiftandTiltCylinderCircuits.

SupplyLine.

Drain/ReturnLine.

ScarifierandRipperCylinderCircuits.

SignalLine

BladeTipCylinderCircuit.

HydraulicFanPumpOutput.

Steering(Circle Drive)Control Circuit.

SideShiftCylinderCircuit.

BladeLift CylinderCircuits.ArticulationCylinder Circuit.

CenterShift CylinderCircuit.

WheelLeanCylinderCircuit.

Plow/DozerLiftandTiltCylinderCircuits.

A

B

C

D

E

F

G

H

I

123456789101112

123456789101112

A

B

C

D

E

F

G

H

I

13

13

120H & 135HIMPLEMENT/STEERING/FAN DRIVE CIRCUIT

ATTACHMENTSACCUGRADE ATTACHMENTS

LEFT HAND RIGHT HANDLEFT HAND RIGHT HAND

MULTIPLE ATTACHMENT COMBINATIONS SHOWN

THIS SCHEMATIC IS FOR THE 120H &135H MOTOR GRADER

PART #:172-9344CH05 (120H)

PART #:172-9347CH05 (135H)

Componentsareshown installedona fullyoperablemachinewith thekeyand engineoffandtransmissions hifterinneutral.

Referto theappropriateService ManualforTroubleshooting,Specifications andSystemsOperations

BLADE LIFT(RIGHT)

BLADE LIFT(LEFT)

BLADE LIFT(LEFT)

BLADE LIFT(RIGHT)

KJHGF

EDCBA

E

DCBA

KJHGF

E

DCBA

K

JHGF

RIPPER SCARIFIER

ARTICULATION CENTER SHIFT WHEEL LEAN BLADE LIFTBLADE LIFT SIDE SHIFT CIRCLE DRIVE BLADE TIP

S NO W WI NG L IF T (H EE L) S NO W WI NG T IL T (T OE ) PLOW/DOZER PLOW ANGLE

CYLINDER GPSCARIFIER112-5575

CYLINDER GPRIPPER6E-4724

VALVE GPSCARIFIER107-0543119-9549

VALVE GPRIPPER107-0545119-9550

VALVE GPSNOW WING TILT137-8104

VALVE GPSNOW WINGLIFT137-8106

VALVE GP

PLOW/DOZER107-0547

130-3111

VALVE GP

PLOW ANGLE115-1007

TANK GPHYDRAULIC OIL207-2410

PUMP GPHYD FAN169-4883

PUMP GPIMP/STEER200-1934

VALVE GPFAN SPEED SOL191-5292

VALVE GPRELIEF(SEC STEER)9T-8071

VALVE GPCHECK(SEC STEER)9T-1013

PUMP GPSECONDARYSTEERING123-8867

VALVE GPCHECK(FAN DRIVE)175-0447

ACCUMULATOR GPSTEERING248-6251

VALVE GPCOMBINATION9T-5957

VALVE GPCHECK(SEC STEER)9T6146

VALVE GPBANK 4LH CONTROL6E-3038

MOTOR GPCIRCLE DRIVE105-3196

SWIVEL GP260-6502

CYLINDER GPBLADE TIP131-7191

CYLINDER GPSIDE SHIFT112-5575

CYLINDER GPBLADE LIFT1324926VALVE GP

BLADE CUSHIONSOLENOID253-1320

VALVE GPBLADE CUSHIONSOLENOID253-1320

ACCUMULATOR GPBLADE CUSHION162-7450

CYLINDER GPBLADE LIFT262-1889

CYLINDER GPSTEERING (LH)130-9041

CYLINDER GPSTEERING (RH)130-9042

CYLINDER GPCENTER SHIFT262-1908

CYLINDER GPARTICULATION198-8305

CYLINDER GPWHEEL LEAN121-9242

VALVE GPBANK 4RH CONTROL6E-3032

PUMP GPMETERING222-3769

MOTOR GPHYDRAULIC FAN224-7040

VALVE GPSHUTTLE131-0753

CC

BB

AA

LINE PATTERNS

Drain/ ReturnLines

ComponentGroup

Pilot/LoadSensingPressure

PressureLine

Attachment

AirLine

CALLOUTS

Taps(Pressure, Sampling,Sensor)byletter

Components bynumber

YY

52

ACCUMULATOR GPBLADE CUSHION162-7450

SWITCH GPFAN DRIVEPRESSURE167-1709

SWITCH GPSEC STEERPRESSURE3E-6450

K

J

HGF

E

D

CBA

VALVE GP

ACCUGRADE SOL

239-9894

VALVE GP

ACCUGRADE SOL

239-9894