RENR4197-02

16Page,BJS

RENR4197-02

October 2004

16H Motor Grader

Hydraulic System

ATS1-UP

©2004 Caterpillar

All Rights Reserved

Printed in U.S.A.

FWD

Signal LineLine for Pump to the

Fan Speed Solenoid

Vent Line to the

Combination Valve

Line to the Fan

Drive Motor from

the Makeup Valve

Line to the Makeup Valve

from the Fan Drive Motor

Line to the

Makeup valve

from the Pump

Line to the

Hydraulic Tank

from the

Makeup Valve

Tank Return LineTap

NumberDescription

Schematic

Location

BB C-9

C-12

B-8

Implement & Steering Load Sensing Signal Pressure

Tap Locations

Pressure, Sampling, and Sensor

CC Pump Supply Pressure (Implement / Steering)

AA Pump Output Pressure (Fan)

DescriptionPart

Number

Machine

Location

Schematic

Location

Cover

101-9346

Cylinder Gp 9T-8944 5

Cylinder Gp 9T-3312 6

Cylinder Gp 9T-3206 7

Cylinder Gp 121-9244

12

Cylinder Gp 165-2507 8

Cylinder Gp 165-2506

11

10

9

Cylinder Gp (2) 9T-3106 4

3

F-13, G-1

Cylinder Gp (2) 9T-3050

2

Manifold - Left 102-8385

Manifold - Right 102-6238

Motor Gp - Gear 224-7040 13

Motor Gp - Gerotor 9T-5977 14

Pump Gp - Metering

Pump Gp - Piston 184-7448

15

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

16

Swivel Gp 173-1011 20

Tank Gp & Filter 207-2410 21

Valve Gp - Check 175-0447 22

Valve Gp - Combination

9T-5957 23

24

25

26

27

28

29

30

31

B-10

B-9

F-11

Switch As - Pressure 230-5771 19 B-6

Sensor Gp - Pressure 167-1709 18 B-5

C-13

C-7

229-7155

Valve Gp - Control 107-0560

Valve Gp - Control 107-0554

Valve Gp - Control 107-0562

Valve Gp - Control 107-0555

Valve Gp - Control 107-0558

Valve Gp - Control 107-0565

Valve Gp - Control 107-0556

Valve Gp - Control 107-0563

Valve Gp - Mounting &

(Fan Speed Solenoid) 193-5765 32

D-1, D-14,I-14

G-11

F-4

G-12

F-3

G-8

G-7

F-5, F-6

D-8

D-6

B-5

G-10

B-5

E-6

E-9

E-5

E-11

E-13

E-2

E-12

E-3

C-11

Valve Gp - Pump Control

(Pressure & Flow Compensator)

(for Hydraulic Fan Pump)104-3122 34 C-9(for Implement & Steering Pump)

168-2210 33 C-10

Valve Gp - Shuttle 131-0753

Valve Gp - Unit Test 4 (LH)

(Implement Control Valve Manifold) 104-8658

35

Valve Gp - Unit Test 4 (RH)

(Implement Control Valve Manifold) 104-8676

36 E-14

C-8

E-1

Accumulator Gp (2) 160-9413

37

Cylinder Gp - Ripper 113-5264

38

39

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

Valve Gp - Check 9T-6146 42

Valve Gp - Control 107-0559 43

Valve Gp - Relief 9T-8071 45

44

Valve Gp (2) - Mounting &(Blade Cushion Solenoid Valve) 112-2240

Valve Gp- Check 9T-1013 41

G-2, G-14

J-13

A-6

C-7

I-13

A-7

F-2, F-13

A-7

Inst - Test 6E-3165

Component Locations

Misc Ref

Attachments

DescriptionPart

Number

Machine

Location

Schematic

Location

(Secondary Steering)

(Ripper)

(Secondary Steering)

(Secondary Steering)

(Blade Cushion)

(Wheel Lean)

(Side Shift)

(Right Blade Lift)

(Left Blade Lift)

(Circle Drive)

(Center Shift)

(Blade Tip)

(Articulation)

(Fan Drive)

(Fan Drive)

(Hydraulic Fan)

(Steering)

111-0491

1

E-7Note A

222-3771Note B

(Circle Drive)

(Hydraulic Fan)

(Wheel Lean)

Steering (RH)

Steering (LH)

(Side Shift)

(Center Shift)

(Blade Tip)

(Blade Lift)

(Articulation)

Accumulator - Steering 248-6252 B-6

Note A

Note C

Note B

Machine Component Locations

1

34

34

42

23

23

23

18

22

13

3316

32

Combination Valve Combination Valve

Hydraulic & Steering System

Hydraulic Fan Drive

CC

BB

BB

AA

BB

CC

AA

Implement

Drain Lines

Implement

Supply Lines

Implement

Signal Lines

Steering Pump

Supply

8 9

10

14

20

44

4

3028 36

2 2511

27

24 25 26 27 28

29 30 31 43

2 26 2912 24 31 37

22

18

36 37

23

40 41

45

33

34

42

15

3

7

5

35

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 Location

for some models.

Note A: Used on 16H(1-215).

Note B: Used on 16H(216-UP).

Note C: Used on 16H(216-221).

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

PRESSURE

COMPENSATION

PUMP: VARIABLE and

PRESSURE COMPENSATED

ENERGY TRIANGLES

HYDRAULIC PNEUMATIC

MEASUREMENT

PRESSURE TEMPERATURE FLOW

ROTATING SHAFTS

UNIDIRECTIONAL BIDIRECTIONAL

PUSH-PULL LEVER PEDALGENERAL MANUAL PUSH BUTTON SPRING

MANUAL CONTROL SYMBOLS

HYDRAULIC MOTORS

FIXED

DISPLACEMENT

VARIABLE DISPLACEMENT

NON-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

FIXED

DISPLACEMENT

VARIABLE DISPLACEMENT

NON-COMPENSATED

UNIDIRECTIONAL

BIDIRECTIONAL

VALVES

PILOT CONTROL SYMBOLSRELEASED PRESSURE

EXTERNAL RETURN INTERNAL RETURN

REMOTE SUPPLY PRESSURE

SIMPLIFIED COMPLETE INTERNAL

SUPPLY PRESSURE

ACCUMULATORS

SPRING LOADED GAS CHARGED

SOLENOID

or MANUALSOLENOID

and PILOT

SOLENOID and

PILOT or MANUAL

COMBINATION CONTROLS

SOLENOID SERVO THERMAL DETENT

HYDRAULIC AND PNEUMATIC CYLINDERS

DOUBLE ACTINGSINGLE ACTING

BASIC

SYMBOL

SPRING

LOADED

CHECK VALVES

TWO

POSITION

INFINITE

POSITIONING

FLOW IN ONE

DIRECTION

FLOW ALLOWED IN

EITHER DIRECTION

THREE

POSITION

CROSS

FLOWPARALLEL

FLOW

INTERNAL PASSAGEWAYS

NORMAL POSITION

A B

P T

A B

P T

SHIFTED POSITION INFINITE POSITION

CONTROL VALVES

ATTACHMENT

MANUAL SHUTOFF

SHUTTLE PILOT

CONTROLLED

Hydraulic Symbols (Electrical)

Electrical Symbols Table

325-AG135 PK-14

Circuit IdentificationNumber

Wire Color Wire Gauge

Harness identification code

This example indicates

wire 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

T

PressureSymbol

TemperatureSymbol

LevelSymbol

FlowSymbol

Electrical Symbols (Electrical)

RENR4197-02

16Page,Color4,BJS

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 DESCRIPTIONS

Implement & Steering Pump Output.

Secondary Steering Pump Output.

Steering Metering Pump Output and

Cylinder Circuit.

Supply Line.

Drain / Return Line.

Ripper Cylinder Circuit.

Signal Line

Blade 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.

THIS SCHEMATIC IS FOR THE 16H Motor Grader

Components are shown installed on a fully operable machine with the key and engine

off and transmission shifter in neutral.

Part #: 172-9362 CHG03

AA

CC

BBTANK GPFILTER &207-2410

COVERLEFT101-9346

COVERLEFT101-9346

VALVE GPUNIT TEST 4(LEFT IMPLEMENTCONTROL VALVEMANIFOLD)104-8658

VALVE GPCONTROL(LEFT BLADE LIFT)107-0558

CYLINDER GP(BLADE LIFT)9T-3106

VALVE GPCONTROL(SIDE SHIFT)107-0556

SWIVEL GP173-1011

CYLINDER GP(SIDE SHIFT)9T-3206

CYLINDER GP(BLADE TIP)9T-8944

VALVE GPCONTROL(BLADE TIP)107-0554

MANIFOLDLEFT102-8385

PUMP GPMETERING(STEERING)

NOTE A111-0491

NOTE B222-3771

CYLINDER GPSTEERING (LH)165-2507

CYLINDER GPRIPPER113-5264

CYLINDER GPSTEERING (RH)165-2506

MANIFOLDRIGHT102-6238

VALVE GPCONTROL(ARTICULATION)107-0560

VALVE GPCONTROL(CENTER SHIFT)107-0562

VALVE GPCONTROL(WHEEL LEAN)107-0563

VALVE GPCONTROL(RIGHT BLADELIFT)107-0565

CYLINDER GP(CENTER SHIFT)9T-3312

ACCUMULATOR GP(BLADE CUSHION)160-9413

VALVE GPMTG &(BLADE CUSHIONSOLENOID)112-2240

VALVE GPCONTROL(RIPPER)107-0559

CYLINDER GP(WHEEL LEAN)121-9244

CYLINDER GPARTICULATION9T-3050

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 GPCOMBINATION

NOTE A9T-5957

NOTE B229-7155

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

VALVE GPUNIT TEST 4(RIGHT IMPLEMENTCONTROL VALVEMANIFOLD)104-8676

VALVE GPRELIEF(SECONDARYSTEERING)9T-8071

ADAPTER

VALVE GPSHUTTLENOTE C131-0753

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 CUSHION

ATTACHEMENTBLADE CUSHION

ATTACHMENT

HYDRAULIC FAN PUMP IMPLEMENT / STEERING PUMP

STEERING

RELIEF VALVE

PRESSURE & FLOW

COMPENSATOR VALVE

PRESSURE & FLOW

COMPENSATOR VALVE

SIGNAL

RESOLVER VALVE

STEERING

PRIORITY VALVE

SIGNAL

PURGE VALVE

SIGNAL

RELIEF VALVE

IMPLEMENT

RELIEF VALVE

SECONDARY STEERING

HYDRAULIC PUMP

RIPPER

EDCBA

CYLINDER GP(BLADE LIFT)9T-3106

ACCUMULATOR GP(BLADE CUSHION)160-9413

VALVE GPMTG &(BLADE CUSHIONSOLENOID)112-2240

NOTE A: Used on 16H(1-215).

NOTE B: Used on 16H(216-UP).

NOTE C: Used on 16H(216-221).

SWITCH ASPRESSURE230-5771

ACCUMULATOR GPSTEERING248-6252