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 228 of 991

TM 9-2320-272-24-2

3-328. FRONT WINCH MOTOR REPLACEMENT

THIS TASK COVERS:

a. Removal

b. Installation

INITIAL SETUP:

APPLICABLE MODELS

All with winch

TOOLS

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

Lifting device

Chain

MATERIALS/PARTS

Gasket (Appendix D, Item 165)

Ten lockwashers (Appendix D, Item 350)

Six locknuts (Appendix D, Item 294)

Cap and plug set (Appendix C, Item 14)

Antiseize tape (Appendix C, Item 72)

REFERENCES (TM)

LO 9-2320-272-12

TM 9-2320-272-10

TM 9-2320-272-24P

EQUIPMENT CONDITION

l

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

l

Hydraulic oil reservoir drained (LO 9-2320-272-12).

a. Removal

1.

Wrap chain around front of winch (11) and install on lifting device.

2.

Remove six screws (1), lockwashers (2), and washers (3) from left and right support plates (5) and

frame rails (10). Discard lockwashers (2).

3.

Loosen two screws (4) on left and right support plates (5).

4.

Remove six locknuts (8). screws (6), and washers (7) from left and right support plates (5) and

support plate brackets (9). Discard locknuts (8).

5.

Lift and tilt front winch (11) until winch motor (16) clears crossmember (12).

CAUTION

When disconnecting hydraulic lines and hoses, plug all openings to

prevent dirt from entering and causing damage to internal parts.

NOTE

l

Have drainage container ready to catch oil.

l

Tag all hydraulic lines for installation.

6.

Disconnect hydraulic return hose (14) and supply hose (15) from elbows (13) on winch motor (16).

7.

Remove four screws (18), lockwashers (19), front winch motor (16), and gasket (17) from winch

motor adapter (20). Discard lockwashers (19) and gasket (17).

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