TM-9-2320-361-24-1

2-1/2 TON, 6X6, M44A2 SERIES TRUCKS

TECHNICAL MANUAL; FIELD AND SUSTAINMENT MAINTENANCE PART 1 OF 2

AUGUST 2006
TM-9-2320-361-24-1

  TM-9-2320-361-24-1 - Page 113 of 1176

TM 9-2320-361-24-1
0006 00
0006 00-17
MECHANICAL SYSTEMS TROUBLESHOOTING - UNIT (Contd)
Table 12. Wheels and Tires Troubleshooting Procedures (Contd).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2. VEHICLE SHIMMY,
WOBBLE, OR VIBRATION
1. Check for loose inner wheel
adapter nuts or loose lugnuts
(WP 0006 00, table 11,
malfunction 1, step 3).
2. Check for dirt or mud buildup on
wheel.
3. Check for bent or damaged
wheel.
4. Check wheel bearings for proper
adjustment and damage. Raise
wheel off ground. Use prybar to
check for excessive play.
5. Inspect steering knuckles for
loose conditions.
6. Check drag link for defects
(WP 0195 00).
1. If inner wheel adapter nuts are
loose, tighten 400–425 lb-ft
(542–576 N
•
m).
2. If lugnuts are loose, tighten
325–355 lb-ft (441–481 N
•
m).
Clean dirt and mud from wheel.
If bent or damaged, replace wheel
(WP 0186 00).
1. Adjust wheel bearings
(WP 0189 00).
2. If damaged, replace wheel
bearings (WP 0187 00 or
WP 0188 00).
If damaged, replace steering
knuckles (WP 0150 00).
1. If linkage parts are defective,
replace (WP 0195 00).
2. Perform steering gear
adjustment (WP 0193 00).
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. EXCESSIVE PLAY IN
STEERING
1. Check for correct tire pressure
(TM 9-2320-361-10).
2. Check steering gear for secure
mounting.
3. Inspect pitman arm, drag link,
steering arm, steering knuckles,
and tie-rod ends for looseness or
damage.
4. Check wheel bearings for proper
adjustment and damage. Raise
wheel off ground. Use prybar to
check for excessive play.
5. Adjust steering gear, refer to
WP 0193 00.
Adjust tire pressure, if necessary.
If loose, tighten mounting screws
62–68 lb-ft (84–92 N
•
m).
1. Replace loose or damaged parts
(WP 0191 00 – WP 0195 00). If
steering arm or knuckle is
damaged, replace (WP 0150 00).
2. Reset correct toe-in (WP 0190 00).
1. Adjust wheel bearings if
necessary (WP 0189 00).
2. If damaged, replace wheel
bearings (WP 0187 00).
If play in steering continues,
replace steering gear (WP 0192 00).
2. STEERING WHEEL HARD
TO TURN
1. Inspect pitman arm, drag link,
steering arm, steering knuckles,
and tie-rod ends for binding,
damage, or lack of lubrication.
1. Replace damaged parts
(WP 0191 00 – WP 0195 00). If
steering arm or knuckle is
damaged, replace (WP 0150 00).
2. If binding, lubricate (WP 0020 00).
Table 13. Steering Troubleshooting Procedures.


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