Table 2-3. Troubleshooting--Vehicle--Continued
TM 9-2320-211-20
Item
No.
Probable Cause
Corrective Action
Malfunction
SERVICE BRAKES-Continued
45 Continued
e. Rear wheel bearings defective or
Inspect bearings; adjust and
out of adjustment.
lubricate or replace if necessary
f. Restricted brake line
a. Defective brakeshoe assembly.
Replace the brakeshoe assembly
46 Nosiy brakes
b. Scored or damaged brakedrum.
c. Bent brakeshoes, anchor pins, or
Replace parts as required (para 2-
plates.
193).
a. Improper brake adjustment.
47 Uneven braking.
b. Worn brake lining
Replace the brakeshoe assembly
c. Grease on lining
Replace the brakeshoe assembly
d. Brakeshoe retractor spring weak
or broken.
e. Brake drum out-of-round.
a. Hand control valve faulty.
48 Trailer brakes inoperative.
Check the valve for proper operation
or
b. Hose connections leaking
disconnected.
49 Air pressure will not rise to
Locate the leak and tighten fittings or
a. Leak in air lines or fittings.
normal, or rises too slowly.
line.
supporting maintenance personnel.
c. Loose compressor drive belt
(gasoline or multifuel engine).
d. Defective compressor
multifuel only)
WHEELS AND TIRES
50 Excessive or uneven tire wear.
Inflate tires properly. Refer to TM 9-
a. Unequal tire pressure
2320-211-10.
Match tires
b. Tires of
unequal rolling radii used
on dual wheels.
Redistribute load properly
c. Uneven vehicle load distribution.
d. Front wheels misalined
Adjust or replace bearings (para 2-
211).
worn.
f. Wheel and tire assembly out of
balance.
51 Wheel pounding
a. Front hub bearings damaged.
c. Wheel and tire out of balance.
d. Wheel bent
52 Shimmy
a. Tires on front wheels improperly
Inflate tires properly. See servicing
inflated.
data plate on instrument panel.
b. Bent wheel or rim
c. Worn, loose, or damaged front
wheel bearings.
d. Worn tie rod ends
e. Tire and wheel assembly out of
balance.
STEERING SYSTEM
53 Steering wheel difficult to turn
a. Power steering system inoperative.
Check the oil level in the power
steering oil system, and add oil if
necessary.
* Refer to footnote at end of table.
2-16