TM-9-2320-272-10

TRUCK, 5-TON, 6X6, M939, M939A1, AND M939A2 SERIES TRUCKS (DIESEL)

TECHNICAL MANUAL; OPERATOR'S MANUAL

SEPTEMBER 2004

CHANGE 2

TM-9-2320-272-10 - Page 360 of 481

TM 9-2320-272-10

Change 2

3-11

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

Table 3-1. Troubleshooting (Contd).

25. OIL LEAKS.

Check for loose connections.

If loose, tighten.

SPECIAL BODY EQUIPMENT:

WARNING

Wear hand protection when handling winch cable. Do

not handle cable with bare hands. Broken wires will

cause injury.

FRONT WINCH

26. WINCH DRUM DOES NOT TURN OR PAYOUT CABLE.

Step 1. Check to see if drum lock knob is engaged.

If engaged, pull out drum lock knob, rotate 90 degrees, and release

(para. 2-22).

Step 2. On M936/A1/A2 model vehicles with level wind device, check to see

if level wind lock knob and cable tensioner lock knob and lever are

engaged.

If engaged, release level wind lock knob and cable tensioner lock

knob and lever.

Step 3. Check if cable is binding.

If binding, free cable from drum.

27. WINCH DOES NOT WIND.

Step 1. Check to see if power takeoff is engaged.

If not, engage power takeoff.

Step 2. Check to see if winch clutch lever is engaged.

If not, engage clutch lever.

Step 3. On vehicles with level wind device, check to see if tensioner lever is

positioned all the way toward right (crew side) of vehicle.

If not, pull tensioner lever all the way toward right side of vehicle.

Step 4. Check level of hydraulic oil in reservoir (para. 2-22).

If low, add oil to proper level (para. 2-10).