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 TM 9-2320-364-34-1
1. TRUCK IS HARD TO STEER (CONT).
2.
TEST OPTIONS
KNOWN INFO
WARNING
Read WARNING
Unit Troubleshooting tasks
Purge steering system hydraulics.
on Page 2-749
completed.
REASON FOR QUESTION
POSSIBLE PROBLEMS
Is steering system hydraulic
If there is air in steering hydraulic
oil free from air?
Air present in steering system
system, truck will be hard to steer.
hydraulics.
2.21:1 gear reducer faulty.
Shaft bearing and intersteering
shaft faulty.
Rear steering gear faulty.
Front steering gear faulty.
Intermediate steering gear
Purge air from
faulty.
steering hydraulic
Steering hydraulic pump
NO
system (Para 12-14).
faulty.
Verify repair and go to
Check valve faulty.
Step 13 of this fault.
Hydraulic pump control faulty.
Front differential pressure
sensing valve faulty.
Priority flow valve faulty.
YES
Rear differential pressure
sensing valve faulty.
Sequence valve faulty.
3.
TEST OPTIONS
KNOWN INFO
Does 2.21:1 gear reducer
Visual inspection.
Unit Troubleshooting tasks
completed.
turn freely without binding?
Steering system hydraulics
REASON FOR QUESTION
free of air.
If 2.21:1 gear reducer binds or
POSSIBLE PROBLEMS
does not turn freely, truck will be
hard to steer.
2.21:1 gear reducer faulty.
Shaft bearing and intersteering
shaft faulty.
Rear steering gear faulty.
Front steering gear faulty.
Intermediate steering gear
faulty.
Replace 2.21:1 gear
Steering hydraulic pump
reducer (Para 12-6).
NO
faulty.
Verify repair, go to
Check valve faulty.
Step 13 of this Fault.
Hydraulic pump control faulty.
Front differential pressure
sensing valve faulty.
Priority flow valve faulty.
Rear differential pressure
YES
sensing valve faulty.
Sequence valve faulty.
2-748
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