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 - Page 110 of 1176
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1. DIFFERENTIAL NOISY
1. Check to see if front wheel drive
is engaged.
2. Check lubrication level in axle
housing differential
(WP 0020 00).
3. Check for loose inner wheel
adapter nuts or loose lugnuts.
4. Check for loose or damaged
wheel bearings. Raise wheel off
ground. Use prybar to check for
excessive play.
5. Check differential operation.
Remove differential propeller
shaft(s) (WP 0139 00). Raise
wheels (TM 9-2320-361-10),
manually turn wheels, and
observe differential operation.
Disengage front wheel drive when
traveling on hard, flat surfaces.
If low, fill to proper oil level
(WP 0020 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).
1. Adjust wheel bearings if loose
(WP 0189 00).
2. If damaged, replace wheel
bearings (WP 0187 00 or
WP 0188 00).
1. If tires will not rotate, check
brakeshoe condition and
operation (WP 0167 00).
2. Remove brake drums (WP 0187 00
and WP 0188 00). If brake system
components are defective, repair
or replace as necessary
(WP 0167 00 –WP 0176 00).
3. If tires still will not rotate,
replace differential
(WP 0454 00).
4. If tire rotation drags at some
points during full rotation,
remove and inspect axle shafts
(WP 0142 00 or WP 0147 00).
5. If axle shafts are defective,
replace (WP 0142 00 or
WP 0147 00).
TM 9-2320-361-24-1
0006 00
0006 00-14
MECHANICAL SYSTEMS TROUBLESHOOTING - UNIT (Contd)
Table 11. Differential Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
PROPELLER SHAFT
VIBRATION
1. Inspect propeller shaft for foreign
material or damage.
2. Inspect propeller shaft for loose
screws.
3. Check universal joints for play or
looseness. If rust is visible
around U-joint, disassemble and
inspect (WP 0141 00).
4. Remove U-joint, disassemble, and
inspect (WP 0141 00).
Clean foreign material from
propeller shaft, or replace if
damaged (WP 0139 00).
If any screws are loose, tighten
(WP 0139 00).
Repair or replace U-joint
(WP 0141 00).
Replace U-joint if damaged
(WP 0141 00).
Table 10. Propeller Shaft Troubleshooting Procedures.
Back to Top
