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 TM 9-2320-364-34-1
2-17. STEERING SYSTEM TROUBLESHOOTING (CONT).
1. TRUCK IS HARD TO STEER.
INITIAL SETUP
Tools and Special Tools
Personnel Required
Tool Kit, General Mechanic's
Two
(Item 240, Appendix F)
Cap and Plug Set (Item 26, Appendix F)
References
Jackstand (Item 132, Appendix F)
TM 9-2320-364-10
Pan, Drain 4 gal (Item 144, Appendix F)
TM 9-2320-364-20
Pressure Test Kit (Item 165, Appendix F)
Equipment Condition
Materials/Parts
Engine OFF, (TM 9-2320-364-10)
Oil, Hydraulic (Item 34, Appendix B)
Parking brake applied, (TM 9-2320-364-10)
Key (Item 137, Appendix E)
Wheels chocked, (TM 9-2320-364-10)
Locknut (3) (Item 213, Appendix E)
Lockwasher (2) (Item 249, Appendix E)
START
1.
KNOWN INFO
TEST OPTIONS
Unit Troubleshooting tasks
Steering test.
Is truck hard to steer only
completed.
when traveling at less than 25
REASON FOR QUESTION
mph (40 km/hr)?
POSSIBLE PROBLEMS
Hard steering at less than 25
mph (40 km/hr) indicates only
Air present in steering
the auxiliary steering pump is
system hydraulics
operating and that there is a
2.21:1 gear reducer faulty.
problem with the main steering
Shaft bearing and intersteering
pump.
shaft faulty.
Rear steering gear faulty.
Front steering gear faulty.
Intermediate steering gear
faulty.
Go to Step 3 of
Steering hydraulic pump
NO
this Fault.
faulty.
Check valve faulty.
Hydraulic pump control faulty.
Front differential pressure
sensing valve faulty.
Priority flow valve faulty.
Rear differential pressure
YES
sensing valve faulty.
Sequence valve faulty.
Go to Step 9 of this
Fault.
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