TM 9-2320-211-20
Table
2-3.
Troubleshooting--Vehicle--Continued
Corrective Action
Probable Cause
No.
Malfunction
PROPELLER SHAFTS--Continued
Remove propeller shaft (para 2-179
c. Worn slip joints
32 Continued
and 2-180). Check condition of
slip-joint splines and replace slip
joint if necessary.
Tighten flange bolts attaching drive
d. Loose drive flange bolts.
flange to propeller shaft and
transmission.
Replace propeller shaft (para 2-179
e. Shaft sprung from contact with
and 2-180).
obstruction.
FRONT AND REAR AXLES
Check oil level in steering system (LO
a. Hydraulic power unit inoperative.
33 Difficult to turn steering wheel.
9-2320-211-12).
Notify support
maintenance personnel.
Check tire pressure and inflate as
b. Tires underinflated
specified on servicing data plate
affixed to instrument panel.
Lubricate steering knuckle, tie rods,
c. Lack of Lubricant
and drag link ends according to LO
9-2320-211-12.
Jack up the front axle to clear wheels
d. Bind in steering knuckles.
of the ground. Disconnect the drag
link at the steering lever left end
assembly (para 2-213). Turn
wheels from side to side. If binding,
disconnect one end of the tie rod
from the steering lever. If binding
persists and lubrication does not
free the knuckle, notify supporting
maintenance
personnel
for
replacement of the front axle
assembly.
Measure from the front spring rear
34 Hard steering; wandering.
a. Axle shifted
eye to a fixed point on the axle.
Compare with a like measurement
on the opposite side. If they do not
agree, inspect for a broken front
spring main leaf and center bolt.
Check for loose or broken U bolts
defective parts (para 2-182).
Check oil level in power steering oil
b. Power steering system inoperative.
system and add oil if necessary.
Check tire inflation and inflate
c. Tires unequally inflated.
properly. See servicing data (para
Adjust wheel bearings (para 2-211).
justment.
e. Insufficient toe-in
Check toe-in (para 2-214).
Lubricate bearings according to
a. Wheel bearings in need of
35 Continuous axle noise.
lubrication order (LO 9-2320-211-
lubrication.
12).
Check bearings for wear and ad-
b. Front or rear wheel out of ad-
justment.
justment.
Inflate tires properly (TM 9-2320-
c . Tires improperly inflated or
211-10).
damaged. (If noise is caused by
tires, noise will disappear when
v e h i c l e is driven over soft
terrain.)
Clean breather vent
d. Loss of lubricant
Tighten nuts to a torque of 160 ft.-lb.
36 Excessive backlash in rear axle
a. Axle flange nuts loose
R e p l a c e axle assembly. Notify
drive flange.
b. Ring gear and pinion out of ad-
supporting maintenance.
justment or worn excessively.
*Refer to footnote at end of table.
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