| |
TM 10-3930-638-24&P
Section IV. STEERING SYSTEM MAINTENANCE
This section contains the information you’ll need to maintain the:
Steering wheel and column
Steering gear
Hydraulic pump
Steering cylinder assemblies
It gives you instructions on how to troubleshoot problems and repair
or replace the component that are within the scope of direct support
maintenance.
Para
Para
Troubleshooting Symptom Index . . . . . . . . . . . . .3-21
Steering System Maintenance. . . . . . . . . . . . . . . 3-24
Hydraulic Pump Troubleshooting , . . . . . . . . . . . . 3-22
Steering Column and Cylinder
Troubleshooting . . . . . . . . . . . . . . . . . . . . . .3-23
Steering Wheel and Column . . . . . . . . . . . . . 3-24a
Steering Gear . . . . . . . . . . . . . . . . . . . . . . . 3-24b
Hydraulic Pump Repair . . . . . . . . . . . . . . . . 3-24c
Steering Cylinder Assembly Repair . . . . . . . . . 3-24d
3-21. TROUBLESHOOTING SYMPTOM INDEX
HYDRAULIC PUMP
Para/Malfunction Page
Vehicle will not turn when steering wheel is turned . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-22/1
3-152
Hydraulic oil foaming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-22/2
3-153
Excessive hydraulic pump noise.. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-22/3
3-153
STEERING COLUMN AND CYLINDER
Effort to turn in one direction is more than required in other direction . . . . . . . . . . . . . . . .
3-23/1
3-154
Steering wheel turns hard in both directions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
3-23/2
3-154
3-22. HYDRAULIC PUMP TROUBLESHOOTING
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. VEHICLE WILL NOT TURN WHEN STEERING WHEEL IS TURNED
Step 1.
Check that steering bypass valve is closed (extreme clockwise position) and hydraulic reservoir is
filled with oil (refer to current lubrication order).
Start engine and run at full throttle while operating lift and tilt control levers.
Check that mast assembly operates normally when levers are actuated; then stop engine.
a. If mast assembly does not operate normally, proceed to step 2.
b. If mast assembly operates normally, proceed to MALFUNCTION 2, HYDRAULIC OIL
FOAMING.
3-152
|
