Section VIII. HYDRAULIC SYSTEMS MAINTENANCE

TM 9-2320-285-24-2

Section VIII. HYDRAULIC SYSTEMS MAINTENANCE

This section contains the information you need to maintain the:

Fifth Wheel Hydraulic System

Cab Tilt Hydraulic System

It gives you instructions on how to troubleshoot problems and repair or replace the components that are

within the scope of direct support maintenance.

Para

Troubleshooting Symptom Index .....................................................................................................

3-39

Fifth Wheel Hydraulic System Troubleshooting ..............................................................................

3-40

Cab Tilt Hydraulic System Troubleshooting ....................................................................................

3-41

Fifth Wheel Hydraulic System Maintenance ....................................................................................

3-42

Hydraulic Pump ..........................................................................................................................

3-42a

Power Take-Off ..........................................................................................................................

3-42b

Hydraulic Control Valve ..............................................................................................................

3-42c

Hydraulic Cylinders .....................................................................................................................

3-42d

Cab Tilt Hydraulic System Maintenance ..........................................................................................

3-43

Hydraulic Pump ..........................................................................................................................

3-43a

Hydraulic Cylinder .......................................................................................................................

3-43b

Hydraulic Latches .......................................................................................................................

3-43c

Hold Down Assembly a ..............................................................................................................

3-43d

Safety Bar ...................................................................................................................................

3-43e

3-39. TROUBLESHOOTING SYMPTOM INDEX

Para/Malfunction

Page

FIFTH WHEEL HYDRAULIC SYSTEM

Fifth wheel doesn't lift ...................................................................................................

3-40/1

3-408

Fifth wheel lifts slowly ...................................................................................................

3-40/2

3-410

Fifth wheel creeps downward ......................................................................................

3-40/3

3-411

Fifth wheel doesn't lower ..............................................................................................

3-40/4

3-411

Hydraulic oil foaming ....................................................................................................

3-40/5

3-413

Hydraulic oil overheating ..............................................................................................

3-40/6

3-413

CAB TILT HYDRAULIC SYSTEM

Cab won't raise to 45 degrees .....................................................................................

3-41/1

3-414

Cab won't lower or stops part way down ......................................................................

3-41/2

3-414

Hydraulic latches or hydraulic cylinder leak fluid...........................................................

3-41/3

3-414

Hydraulic pump leaks fluid at filler plug or vent ............................................................

3-41/4

3-414

3-407