Cat 14h Sistema Hidraulico

RENR4184-04

16Page

RENR4184-04September 2005

14H Motor GraderHydraulic SystemASE1-UP

2005 CaterpillarAll Rights Reserved

Printed in U.S.A.

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 andPILOT 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

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 NumberIdentification

Wire Number Identification Codes

Current Standard

Previous Standard

Electrical Schematic Example Hydraulic Schematic Example

325-PK

Wire ColorCircuit NumberIdentification

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)

FWD

Signal LineLine for Pump to theFan Speed Solenoid

Vent Line to theCombination Valve

Line to the FanDrive Motor fromthe Makeup Valve

Line to the Makeup Valvefrom the Fan Drive Motor

Line to theMakeup valvefrom the Pump

Line to theHydraulic Tankfrom theMakeup Valve

Tank Return Line

TapNumber Description

SchematicLocation

BB C-9C-12

B-8

Implement & Steering Load Sensing Signal Pressure

Tap LocationsPressure, Sampling, and Sensor

CC Pump Supply Pressure (Implement / Steering)

AA Pump Output Pressure (Fan)

Description PartNumberMachineLocation

SchematicLocation

Cover101-9346

Cylinder Gp 9T-8944 5Cylinder Gp 262-1906 6Cylinder Gp 9T-3206 7

Cylinder Gp 121-9243

12

Cylinder Gp 165-2495 8Cylinder Gp 165-2496

11109

Cylinder Gp (2)262-1903 4

3F-13, G-1,J-2, J-4

Cylinder Gp (2) 184-6804

2

Manifold - Left 102-8385Manifold - Right 102-6238Motor Gp - Gear 224-7040 13Motor Gp - Gerotor 9T-5977 14Pump Gp - Metering

Pump Gp - Piston 184-7448

15

Pump Gp - Piston(Implement & Steering) 177-7517 17

16

Swivel Gp 260-6502 20Tank Gp & Filter 207-2410 21Valve Gp - Check 175-0447 22Valve Gp - Combination 9T-5957 23

2425262728293031

B-10

B-9

F-11Switch As - Pressure 230-5771 19 B-6Sensor Gp - Pressure 167-1709 18 B-5

C-13

C-7Valve Gp - Control 107-0560Valve Gp - Control 107-0554Valve Gp - Control 107-0561Valve Gp - Control 107-0555Valve Gp - Control 107-0557Valve Gp - Control 107-0564Valve Gp - Control 107-0556Valve Gp - Control 6E-3030Valve Gp - Mounting &

(Fan Speed Solenoid) 193-5765 32

D-1, D-14,H-7, I-14

G-11F-4G-12

F-3

G-8G-7

F-5, F-6

D-8D-6B-5G-10

B-5

E-6E-9E-5E-11

E-14

E-1

E-12E-3

C-11Valve Gp - Pump Control

(Pressure & Flow Compensator)(for Hydraulic Fan Pump)

104-3122 34 C-9(for Implement & Steering Pump)168-2210 33 C-10

131-0753Valve Gp - Unit Test 4 (LH)

(Implement Control Valve Manifold) 104-8653

35

Valve Gp - Unit Test 4 (RH)(Implement Control Valve Manifold) 104-8674

36

E-13, H-4E-2, H-2

Accumulator Gp (2) 160-9413

37

Cylinder Gp - Ripper 113-52643839

Pump Gp - Electric Drive(Secondary Steering) 123-8915 40

Valve Gp - Check 9T-6146 42Valve Gp - Control 107-0559 43Valve Gp - Control 107-0559Valve Gp - Control

(Snow Wing LIft - Heel) 137-8106

44

Valve Gp - Control(Snow Wing Tilt - Toe) 137-8104

45

Valve Gp - Relief 9T-8071 4847

Valve Gp (2) - Mounting &(Blade Cushion Solenoid Valve) 253-1320

46

Valve Gp- Check 9T-1013 41

G-2, G-14J-10

A-6

C-7I-9I-10

I-13

I-12

A-7F-2, F-13

A-7

Inst - Test 6E-3164

Component Locations

Misc Ref

AttachmentsDescription PartNumber

MachineLocation

SchematicLocation

(Secondary Steering)

(Ripper)(Plow/Dozer Lift)

(Secondary Steering)(Secondary Steering)

(Blade Cushion)

(Wheel Lean)

Valve Gp - Shuttle C-8(Wheel Lean)

(Side Shift)(Right Blade Lift)(Left Blade Lift)(Circle Drive)(Center Shift)(Blade Tip)(Articulation)

(Fan Drive)

(Fan Drive)

(Hydraulic Fan)

(Steering)111-0490

1

E-7Note A222-3770Note B

(Circle Drive)(Hydraulic Fan)

(Wheel Lean)Steering (RH)Steering (LH)(Side Shift)

(Center Shift)(Blade Tip)

(Blade Lift)

(Articulation)

Accumulator - Steering 248-6251 B-6

Note A: Used on 14H(1-746).Note B: Used on 14H(747-UP).Note C: Used on 14H(747-818).

239-9893239-9894

4950

I-4I-1

AccuGrade AttachmentsDescription PartNumber

MachineLocation

SchematicLocation

Manifold Gp - Control (LH)Manifold Gp - Control (RH)

Machine Component Locations

1

34

34

42

23

23

23

18

22

13

331632

Combination Valve Combination Valve

Hydraulic & Steering System

Hydraulic Fan Drive

CC

BB

BB

AA

BB

CC

AA

ImplementDrain Lines

ImplementSupply Lines

ImplementSignal Lines

Steering PumpSupply

8 910

14

20

47

4

3630 49

272 2511

28

24 25 26 27 28 29

30 31 43 44 45 46

2 26 2912 24 31 37 50

22

18

36 37

23

40 41

48

33

34

42

15

3

7

5

16

38

17

32

21

6

13

AA

CCBB

39

191

ALT.

side dependent on machine arrangement.

The Following Control Valves may be located

or (RH) machineon either (LH)

Alternate Locationfor some models.

RENR4184-04

16Page,Color4

A

C

B

D

E

F

G

H

I

J

A

C

B

D

E

F

G

H

I

J

14 13 12 11 10 9 8 7 6 5 4 3 2 1

14 13 12 11 10 9 8 7 6 5 4 3 2 1

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 number1

YY

HYDRAULIC CIRCUIT COLOR DESCRIPTIONSImplement & Steering Pump Output.Secondary Steering Pump Output.Steering Metering Pump Output andCylinder Circuit.

Snow Wing Lift and Tilt Cylinder Circuits.Supply Line.Drain / Return Line.Ripper Cylinder Circuit.Signal LineBlade Tip Cylinder Circuit.

Hydraulic Fan Pump Output.

Steering (Circle Drive) Control Circuit.Side Shift Cylinder Circuit.Blade Lift Cylinder Circuits.Articulation Cylinder Circuit.Center Shift Cylinder Circuit.Wheel Lean Cylinder Circuit.Plow/Dozer Lift Cylinder Circuit.

THIS SCHEMATIC IS FOR THE 14H Motor Grader

Components are shown installed on a fully operable machine with the key and engineoff and transmission shifter in neutral.

Part #: 172-9361 CHG07

AA

CC

BBTANK GPFILTER &207-2410

COVERLEFT101-9346

COVERLEFT101-9346

VALVE GPUNIT TEST 4(LEFT IMPLEMENTCONTROL VALVEMANIFOLD)104-8653

VALVE GPCONTROL(LEFT BLADE LIFT)107-0557

CYLINDER GP(BLADE LIFT)262-1903

VALVE GPCONTROL(SIDE SHIFT)107-0556

SWIVEL GP260-6502

CYLINDER GP(SIDE SHIFT)9T-3206

CYLINDER GP(BLADE TIP)9T-8944

VALVE GPCONTROL(BLADE TIP)107-0554

MANIFOLDLEFT102-8385

PUMP GPMETERING(STEERING)

Note A111-0490

Note B222-3770

CYLINDER GPSTEERING (LH)165-2495

CYLINDER GPRIPPER113-5264

CYLINDER GPSTEERING (RH)165-2496

MANIFOLDRIGHT102-6238

VALVE GPCONTROL(ARTICULATION)107-0560

VALVE GPCONTROL(CENTER SHIFT)107-0561

VALVE GPCONTROL(WHEEL LEAN)6E-3030

VALVE GPCONTROL(RIGHT BLADELIFT)107-0564

CYLINDER GP(CENTER SHIFT)262-1906

ACCUMULATOR GP(BLADE CUSHION)160-9413

VALVE GPCONTROL(PLOW/DOZERLIFT)107-0547

VALVE GPCONTROL(RIPPER)107-0559

VALVE GPCONTROL(SNOW WINGLIFT -HEEL)137-8106

VALVE GPCONTROL(SNOW WINGTILT - TOE)137-8104

CYLINDER GP(WHEEL LEAN)121-9243

CYLINDER GPARTICULATION184-6804

VALVE GPCONTROL(CIRCLE DRIVE)107-0555

VALVE GPMTG &(FAN SPEEDSOLENOID)193-5765

PUMP OUTPUTPRESSURE

VALVE GPPUMP CONTROL168-2210

VALVE GPPUMP CONTROL104-3122

PUMP GPPISTON(HYDRAULICFAN)184-7448

PUMP GPPISTON(IMPLEMENT &STEERING)177-7517

SIGNALLINEPRESSURE VALVE GP

CHECK(SECONDARYSTEERING)9T-6146

VALVE GPCOMBINATION9T-5957

VALVE GPCHECK(SECONDARYSTEERING)9T-1013

PUMP GPELECTRIC DRIVE(SECONDARY STEERING)123-8915

SENSOR GPPRESSURE(FAN DRIVE)167-1709

VALVE GPCHECK(FAN DRIVE)175-0447

MOTOR GPGEAR(HYDRAULICFAN)224-7040

COVERRIGHT101-9346

COVERRIGHT101-9346

VALVE GPUNIT TEST 4(RIGHT IMPLEMENTCONTROL VALVEMANIFOLD)104-8674

VALVE GPRELIEF(SECONDARYSTEERING)9T-8071

ADAPTER

PUMPSUPPLYPRESSURE

MOTOR GPGEROTOR(CIRCLE DRIVE)9T-5977

DCBA

E KJHGF

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

BLADE CUSHIONATTACHEMENT

BLADE CUSHIONATTACHMENT

HYDRAULIC FAN PUMP IMPLEMENT / STEERING PUMPSTEERING

RELIEF VALVE

PRESSURE & FLOWCOMPENSATOR VALVE

PRESSURE & FLOWCOMPENSATOR VALVE

SIGNALRESOLVER VALVE

STEERINGPRIORITY VALVE

SIGNALPURGE VALVE

SIGNALRELIEF VALVE

IMPLEMENTRELIEF VALVE

SECONDARY STEERINGHYDRAULIC PUMP

SNOW WING LIFT (HEEL) SNOW WING TILT (TOE)

RIPPERPLOW / DOZER

LIFT

KJHGF

EDCBA


ACCUMULATOR GP(BLADE CUSHION)160-9413

Note A: Used on 14H(1-746).Note B: Used on 14H(747-UP).Note C: Used on 14H(747-818).

SWITCH ASPRESSURE230-5771

T1

BA

TPLS

VALVE GPCONTROL(RIGHT BLADE LIFT)107-0564

MANIFOLD GPCONTROL (RH)239-9894

BLADE LIFT



VALVE GPSHUTTLENote C131-0753

VALVE GPCONTROL(LEFT BLADE LIFT)107-0557

BLADE LIFT

BLADE LIFT

T1

BA

TPLS

MANIFOLD GPCONTROL (LH)239-9893

VALVE GPMTG &(BLADE CUSHIONSOLENOID)253-1320

ACCUGRADE ATTACHMENTS

VALVE GPMTG &(BLADE CUSHIONSOLENOID)253-1320

ACCUMULATOR GPSTEERING248-6251

Documents

Cat 14h Sistema Hidraulico