Cat TH255 Telehandler Hydraulic Schematic Manual - PDF DOWNLOAD

ANSI (see sheets 2 & 3) CE (see sheets 4 & 5)

S/N TBS00100 & After

TH255 Hydraulic Schematic 31200458 Sheet 1 of 5 November 29, 2011

JOYSTICK

LIFT CYLINDER

EXTEND/RETRACT CYLINDER

TILT CYLINDER

DECOMP VALVE COMPENSATION CYLINDER

MASTER BRAKE CYLINDER VALVE

FRONT AXLE (PARK BRAKE) FRONT AXLE (SERVICE BRAKE)

PARK BRAKE VALVE

PILOT SELECT VALVE

MAIN CONTROL VALVE (W/AUX)

INCHING VALVE

HYDRAULIC PUMP

PRIORITY VALVE HYDRAULIC MOTOR

RADIATOR W/ HYDRAULIC COOLER

CHECK VALVE (55 PSI)

CHECK VALVE (5 PSI)

IMPLEMENT PUMP

STEER SELECT VALVE

STEERING VALVE

RETURN FILTER

HYDRAULIC RESERVOIR (BUILD INTO TANK)

ANSI S/N TBS00100 thru TBD

TH255 Hydraulic Schematic 31200458 Sheet 2 of 5 November 29, 2011 - L

8

9

7

6

CYLINDER, TILT

5

4

3

EXTEND/RETRACT CYLINDER

1

VALVE, MASTER CYLINDER

CYLINDER, LIFT

H

2

H

JOYSTICK

CYLINDER, COMP

G

G VALVE, PILOT SELECT FRONT AXLE SERVICE BRAKE

T JS4

VALVE, MAIN CONTROL W/ AUX

JS2

TELE

3A

3B

P2

P1

AUX

P3

P4

FRONT AXLE PARK BREAK

TILT

P5

VALVE, PARK BRAKE RELEASE

P6

F

F

VALVE, INCHING

E

E

MOTOR, HYDRAULIC PUMP, HYDRAULIC VARIABLE DISPLACEMENT

D

COOLER

VALVE, CHECK

VALVE, PRIORITY

D VALVE, CHECK

VALVE, STEER SELECT

PUMP IMPLEMENT

C

C

FILTER, RETURN

VALVE, STEERING

B

B

A

A

9

8

7

6

5

ANSI S/N TBD & After

4

3

2

1

TH255 Hydraulic Schematic 31200458 Sheet 2 of 5 November 29, 2011 - C

ANSI S/N TBS00100 & After

TH255 Hydraulic Schematic 31200458 Sheet 3 of 5 November 29, 2011 - C

TILT CYLINDER

EXTEND/RETRACT CYLINDER BLOCKING VALVE

DECOMP VALVE

JOYSTICK

COMPENSATION CYLINDER

LIFT CYLINDER

MASTER BRAKE CYLINDER VALVE

FRONT AXLE (SERVICE BRAKE)

FRONT AXLE (PARK BRAKE) PARK BRAKE VALVE PILOT SELECT VALVE

LSI VALVE

MAIN CONTROL VALVE (W/AUX)

INCHING VALVE

STEERING PRESSURE SENSOR

HYDRAULIC PUMP

PRIORITY VALVE

HYDRAULIC MOTOR

RADIATOR W/ HYDRAULIC COOLER

CHECK VALVE (55 PSI)

CHECK VALVE (5 PSI)

IMPLEMENT PUMP

STEER SELECT VALVE

STEERING VALVE

RETURN FILTER

HYDRAULIC RESERVOIR (BUILD INTO TANK)

CE S/N TBS00100 thru TBS00626

TH255 Hydraulic Schematic 31200458 Sheet 4 of 5 November 29, 2011 - N

9

8

7

6

CYLINDER, TILT CYLINDER, LIFT

4

3

2

CYLINDER, CROWD

1

VALVE, MASTER CYLINDER

LIFT

H

JOYSTICK

V2

H

5

V1

CYLINDER, COMP

SENSOR, PILOT PRESSURE

G

G VALVE, PILOT SELECT MPJS3T

JS3

JS1

0.047"

FRONT AXLE SERVICE BRAKE

JS4

VALVE, MAIN CONTROL W/ AUX

JS2

TELE

3A

3B

P8

P7

P2

P1

AUX

P3

P4

FRONT AXLE PARK BREAK

TILT

P5

VALVE, PARK BRAKE RELEASE

P6

F

F

SENSOR, STEERING PRESSURE

VALVE, INCHING

E

E

MOTOR, HYDRAULIC PUMP, HYDRAULIC VARIABLE DISPLACEMENT

D

COOLER

VALVE, CHECK

VALVE, PRIORITY

D VALVE, CHECK

VALVE, STEER SELECT

PUMP IMPLEMENT

C

C

C

FILTER, RETURN

VALVE, STEERING

B

B

A

A

9

8

7

6

5

CE S/N TBS00627 & After

4

3

2

1

TH255 Hydraulic Schematic 31200458 Sheet 4 of 5 November 29, 2011 - B

CE S/N TBS00100 & After

TH255 Hydraulic Schematic 31200458 Sheet 5 of 5 November 29, 2011 - B

CE S/N TBS00100 & After

TH255 Hydraulic Schematic 31200458 Sheet 5 of 5 November 29, 2011 - B