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 108 of 1176

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

1. TRANSMISSION NOISY

1. Ensure Power Takeoff (PTO) is

not engaged, if applicable.

2. Check propeller shafts condition.

Remove propeller shafts and

inspect (WP 0139 00).

3. Check clutch for proper

adjustment.

4. Check transmission fluid level

(WP 0020 00).

5. Drain transmission fluid and

check for signs of broken gears,

metal shavings, and

contamination (WP 0020 00).

6. Check mounting of transmission

to engine (WP 0132 00).

If PTO is engaged, disengage.

If propeller shaft assemblies are

worn or defective, repair or replace

(WP 0139 00).

Adjust clutch linkage as necessary

(WP 0047 00).

Fill transmission fluid to proper level

(WP 0020 00).

If broken gears or metal shavings are

found, replace transmission

(WP 0131 00 and WP 0132 00).

Tighten loose components or replace

damaged components (WP 0132 00).

2. TRANSMISSION LEAKS

OIL

1. Check transmission fluid level

(WP 0020 00).

2. Check drainplug for leaks.

3. Check breather for restrictions.

4. Check transmission output seal

for leaks.

If fluid level is too high, drain to

proper level (WP 0020 00).

If drainplug is leaking, tighten.

If breather is restricted, refer to

WP 0128 00.

Replace seals (WP 0450 00).

3. CLUTCH PEDAL WILL

NOT TRAVEL OR

DEPRESS

1. Check transmission fluid level

(WP 0020 00).

2. Check clutch linkage to ensure it

is connected and properly

adjusted (WP 0047 00).

If fluid level is low, add fluid

(WP 0020 00).

Adjust clutch linkage as necessary

(WP 0047 00).

TM 9-2320-361-24-1

0006 00

0006 00-12

MECHANICAL SYSTEMS TROUBLESHOOTING - UNIT (Contd)

Table 7. Transmission Troubleshooting Procedures.

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

1. VEHICLE CREEPS WITH

CLUTCH DEPRESSED

Check clutch pedal free travel.

Clutch pedal should have 1.5–2 in.

(3.8–5 cm) free travel.

1. If clutch requires adjustment, refer

to WP 0047 00.

2. If free travel will not adjust, check

for bent or broken parts. Replace

damaged parts (WP 0047 00).

Table 8. Clutch Troubleshooting Procedures.