motoniveladora cat 12H, 140H y 160H esquema hidraulico .pdf

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SENR8571-01 October 2004

12H, 140H, and 160H Motor Graders Standard Versions Hydraulic System 2FM1-399 5HM1-1149 5ZM1-UP 8JM1-279 9JM1-349 4ER1-499

© 2004 Caterpillar, All Rights Reserved

Printed in U.S.A.

COMPONENT LOCATION Part Machine Schematic Number Location Location

Description

Implement and Steering Circuits Filter & Tank

9T-7984

1

B-4

Piston Pump For Implements And Steering

6E-3137

2

B-3

Combination Valve

9T-5957

3

B-3

Metering Pump For Steering

102-1501

4

C-3

Left Implement Valve Group

104-8672

5

C-4

Right Implement Valve Group

124-3325

6

C-2

Cylinder For Blade Lift

132-4929

7

D-1,D-4

Gerotor Motor For Circle Drive

105-3196

8

D-4

Left Steering Cylinder

9T-2395

9

D-3

Right Steering Cylinder

9T-2393

10

D-3

11

D-2

12

D-2

Left Articulation Cylinder

Right Articulation Cylinder

12/140H

9T-8784

160H

137-6792

12/140H

6E-1560

160H

137-6790

Centershift Cylinder

6E-1343

13

D-2

Wheel Lean Cylinder

121-9242

14

D-1

Attachment Ciruits Plow/Dozer Control Valve

124-2885

15

A-7

Snow Wing Toe Tilt Control Valve¹

137-8104

16

B-7

Snow Wing Heel Lift Control Valve¹

137-8106

17

B-7

NA

112-5575

18

C-6

ES

112-5575

NA

9T-5604

19

C-6

ES

9T-5604

NA

6E-1549

20

C-6

ES

6E-1549

Cylinder For Side Shift

Swivel Group

Cylinder For Blade Tip

Scarifier Control Valve

107-0543

21

D-7

Plow Angle Control Valve¹

115-1007

22

E-7

Ripper Control Valve

107-0545

23

E-7

Ripper Cylinder

113-7754

24

E-6

Scarifier Cylinder

9T-6951

25

D-6

¹ Attachment for 140H and 160H only.

FLUID POWER SYMBOLS BASIC COMPONENT SYMBOLS

MAIN AUX.

PUMP or MOTOR

SPRING (ADJUSTABLE)

VARIABILITY

CONTROL VALVES

SPRING

FLUID CONDITIONER

PRESSURE COMPENSATION

LINE RESTRICTION (VARIABLE)

TWO POSITION

2-SECTION PUMP

HYDRAULIC PNEUMATIC ENERGY TRIANGLES

ATTACHMENT

LINE RESTRICTION

VALVE PORTS

TWO-WAY

THREE POSITION

PUMP: VARIABLE and PRESSURE COMPENSATED

VARIABLE and PRESSURE COMPENSATED

VALVES

VALVE ENVELOPES

ONE POSITION

LINE RESTRICTION (FIXED)

RESTRICTION

FOUR-WAY

THREE-WAY

CONTROL VALVES

CHECK VALVES

AB

AB

P T NORMAL POSITION

P T SHIFTED POSITION

INFINITE POSITION

SHUTTLE

SPRING LOADED

BASIC SYMBOL

PILOT CONTROLLED

FLUID STORAGE RESERVOIRS

VENTED

RETURN ABOVE FLUID LEVEL

PRESSURIZED

RETURN BELOW FLUID LEVEL

MEASUREMENT

PRESSURE

TEMPERATURE

ROTATING SHAFTS

FLOW

UNIDIRECTIONAL

BIDIRECTIONAL

COMBINATION CONTROLS

SOLENOID

SOLENOID or MANUAL

SOLENOID and PILOT or MANUAL

SOLENOID and PILOT

SERVO

DETENT

THERMAL

MANUAL CONTROL SYMBOLS

MANUAL SHUTOFF

PUSH-PULL LEVER

RELEASED PRESSURE

EXTERNAL RETURN

SPRING LOADED

HYDRAULIC PUMPS VARIABLE DISPLACEMENT NON-COMPENSATED

PEDAL

LINES CROSSING

LINES JOINING

VARIABLE DISPLACEMENT NON-COMPENSATED

UNIDIRECTIONAL

UNIDIRECTIONAL

BIDIRECTIONAL

BIDIRECTIONAL

INTERNAL SUPPLY PRESSURE

COMPLETE

HYDRAULIC AND PNEUMATIC CYLINDERS

SINGLE ACTING

DOUBLE ACTING

INTERNAL PASSAGEWAYS

HYDRAULIC MOTORS FIXED DISPLACEMENT

SPRING

REMOTE SUPPLY PRESSURE

SIMPLIFIED

CROSSING AND JOINING LINES

GAS CHARGED

PUSH BUTTON

PILOT CONTROL SYMBOLS

INTERNAL RETURN

ACCUMULATORS

FIXED DISPLACEMENT

GENERAL MANUAL

INFINITE POSITIONING

FLOW IN ONE DIRECTION

THREE POSITION

PARALLEL FLOW

CROSS FLOW

TWO POSITION

FLOW ALLOWED IN EITHER DIRECTION

ELECTRICAL SYMBOLS Hydraulic Symbols (Electrical)

G Transducer (Fluid)

Transducer (Gas / Air)

Pressure Switch (Adjustable)

Pressure Switch

M

Generator

Electric Motor

Electrical Wire

Temperature Switch

Electrical Symbols (Electrical)

T

Pressure Symbol

Temperature Symbol

Level Symbol

Flow Symbol

Wire Number Identification Codes

Electrical Schematic Example

Hydraulic Schematic Example Current Standard

Current Standard Harness identification code This example indicates wire 135 in harness "AG".

Wire Circuit Number Identification

Wire Color

325-AG135 PK-14 325-PK Circuit Identification Number

Wire Color

Wire Gauge

Previous Standard Wire Color

Wire

325-PK-14 B Circuit Number Identification

A

Wire Gauge (EXAMPLE VALVE)

7

E

6

5

3

2

1

(24) CYLINDER GP RIPPER 113-7754

(23) VALVE GP CONTROL RIPPER 107-0545

E

(22) VALVE GP CONTROL BULLDOZER ANGLE/ PLOW 115-1007

(8) MOTOR GP GEROTOR CIRCLE DRIVE 105-3196

(7) CYLINDER GP LIFT 132-4929

(25) CYLINDER GP SCARIFIER 9T-6951

D

4

(11) CYLINDER GP ARTICULATION-LH (12/140H) 9T-8784 CYLINDER GP ARTICULATION-LH (160H) 137-6792 (10) CYLINDER GP STEERING-RH 9T-2393

(9) CYLINDER GP STEERING-LH 9T-2395

(12) CYLINDER GP ARTICULATION-RH (12/140H) 6E-1560 CYLINDER GP ARTICULATION-RH (13) CYLINDER GP CENTER SHIFT (160H) 6E-1343 137-6790

(14) CYLINDER GP WHEEL LEAN 121-9242 (7) CYLINDER GP LIFT 132-4929

(21) VALVE GP CONTROL SCARIFIER 107-0543

D

(19) SWIVEL GP (NA) 9T-5604 (ES) 9T-5604

(18) CYLINDER GP SIDE SHIFT (NA) 112-5575 (ES) 112-5575

(5) VALVE GP LEFT IMPLEMENT 104-8672

(4) PUMP GP METERING 102-1501

(20) CYLINDER GP BLADE TIP (NA) 6E-1549 (ES) 6E-1549

C

C S2

(6) VALVE GP RIGHT IMPLEMENT 124-3325 S1

(3) VALVE GP COMBINATION 9T-5957

B

(1) TANK AND FILTER GP 9T-7984

(17) VALVE GP CONTROL WING LIFT 137-8106

B

T1 T2

(2) PUMP GP PISTON 6E-3137

(16) VALVE GP CONTROL WING TILT 137-8104

Implement and Steering Ciruits HYDRAULIC CIRCUIT COLOR DESCRIPTIONS

A

Piston Pump for Implement and Steering Load Sensing. Supply Line. Drain / Return Line. Blade Lift Cylinder Gerotor Motor (for Circle Drive) Steering Cylinders (Left and Right) Articulation Cylinders (Left and Right) Centershift (Control Valve and Cylinder) Wheel Lean (Control Valve and Cylinder) Scarifier Cylinder (Control Valve and Cylinder) Plow Angle (Control Valve and Cylinder) Ripper (Control Valve and Cylinder) Plow / Dozer (Control Valve and Cylinder)

LINE PATTERNS Pressure Line

(15) VALVE GP CONTROL BULLDOZER LIFT/PLOW 124-2885

Pilot / Load Sensing Pressure Drain / Return Lines Component Group

CALLOUT

Attachment Ciruits

Callout Number

(Machine Location from Component LocationsTable)

(52) VALVE GP - CONTROL 138-1234 Part Number

Component Name

A

THIS SCHEMATIC IS FOR THE 12H, 140H, AND 160H MOTOR GRADER STANDARD VERSIONS HYDRAULIC SYSTEM MEDIA NUMBER: SENR8571-01 SCHEMATIC PART NUMBER: 6E-3156, CHANGE: 05, VERSION: -

Snow Wing Toe Tilt (Control Valve and Cylinder) Snow Wing Heel Lift (Control Valve and Cylinder) Blade Tip (Control Valve and Cylinder)

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

Side Shift (Control Valve and Cylinder)

7

6

5

4

3

2

1

MACHINE COMPONENT LOCATIONS VIEW ALL CALLOUTS

18 14

9

10

25

8

13

20

22

15

7

6 2

1

12

24

19 7

21

17

23

16

5

3

4

11