Unit Mechanical Troubleshooting - continued

TM 9-2320-386-24-1-1

0010 00

Unit Mechanical Troubleshooting (Contd)

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

23. EXCESSIVE NOISE DURING SHIFTING

Step 1. Check transmission fluid level (TM 9-2320-386-10).

Drain or fill fluid as necessary (WP 0023 00).

Step 2. Check propeller shaft flanges for loose mounting bolts.

Tighten mounting bolts if loose.

Step 3. Inspect propeller shaft universal joints for looseness, wear, and damage.

a. Tighten universal joint yoke if loose.

b. Replace worn or damaged universal joints (WP 0149 00).

END OF TESTING!

24. TRANSMISSION SHIFTING IRREGULARLY

Step 1. Check transmission fluid level (TM 9-2320-386-10).

Drain or fill fluid as necessary (WP 0023 00).

Step 2. Check for clogged or dirty transmission oil filter.

Replace transmission oil filter if clogged or dirty (WP 0143 00 and WP 0142 00).

Step 3. Check for restricted or leaking transmission oil cooler hoses.

Tighten or replace transmission oil cooler hoses (WP 0139 00).

Step 4. Check for clogged or restricted transmission auxiliary oil cooler.

Replace transmission auxiliary oil cooler if clogged or restricted (WP 0140 00).

Step 5. Check engine idle speed.

If engine idle speed is set below specifications, adjust (WP 0052 00).

END OF TESTING!

25. TRANSMISSION OIL LEAKAGE

Step 1. Inspect for oil leak at output shaft.

If output oil seal is leaking, notify direct support maintenance.

Step 2. Inspect drainplug for leaks.

a. Tighten drainplug if loose.

b. If leak continues, notify direct support maintenance.

Step 3. Inspect transmission at oil pan gasket for leaks.

a. Tighten mounting screws if loose.

b. If problem continues, replace oil pan gasket (WP 0143 00).

Step 4. Inspect transmission housing for leaks.

If leaking, notify direct support maintenance.

Step 5. Remove flywheel housing inspection plate and inspect for oil pump seal leak.

If leak is present, notify direct support maintenance.

END OF TESTING!

26. NO RESPONSE TO SHIFT LEVER MOVEMENT

Step 1. Check transmission oil level (TM 9-2320-386-10).

Drain or fill oil as necessary (WP 0023 00).

Step 2. Check for broken or disconnected shift cable.

a. If disconnected, connect shift cable (WP 0132 00).

b. If broken, replace shift cable (WP 0132 00).

END OF TESTING!

0010 00-9