TM-9-2320-272-24-2

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

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 2 OF 4

JUNE 1998

TM-9-2320-272-24-2 - Page 220 of 991

TM 9-2320-272-24-2

3-324. FRONT WINCH DRAG BRAKE ADJUSTMENT

THIS TASK COVERS:

a. Testing

b. Adjustment

INITIAL SETUP:

APPLICABLE

MODELS

EQUIPMENT

CONDITION

All with winch

Parking brake set (TM 9-2320-272-10).

TOOLS

GENERAL

SAFETY

INSTRUCTIONS

General mechanic ’s tool kit (Appendix E, Item 1)

Wear hand protection when handling winch cable.

REFERENCES (TM)

TM 9-2320-272-10

a. Testing

WARNING

Wear hand protection when handling winch cable. Broken wires

may cause injury to personnel.

1.

Pull out drum lock knob (2) on left side of front winch (1), rotate 90 degrees, and release.

NOTE

Perform steps 2 and 3 for M936/A1 model vehicles equipped with

level wind. M936A2 model vehicles do not have a level wind.

2.

Pull out level wind lock knob (6) on level winch frame (5), rotate one-quarter turn, and release.

3.

Pull out cable tensioner lock knob (8) and release tensioner lever (7).

4.

Push clutch lever (3) toward front of vehicle to disengage clutch.

5.

Pull winch cable (4) 3-4

ft.

(.9-1.2 m) off drum. Drum will stop turning as soon as pulling has stopped

if drag brake is adjusted properly If drum continues to turn after pulling has stopped, perform task

b. to adjust drag brake.

b. Adjustment

1.

Turn drag brake adjusting screw (9), located under front winch (1), one-quarter turn clockwise to

increase drag; counterclockwise to decrease drag.

2.

Repeat task a, step 5, until drag brake is properly adjusted.

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