TM-9-2320-272-24-1

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

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 1 OF 4

JUNE 1998

TM-9-2320-272-24-1 - Page 576 of 1015

TM

9-2320-272-24-1

THIS TASK COVERS:

a. Removal

c. Installation

b. Cleaning and Inspection

APPLICABLE

MODELS

M939A2

REFERENCES (TM)

TM

9-2320-272-10

TOOLS

TM 9-2320-272-24P

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

EQUIPMENT CONDITION

MATERIALS/PARTS

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

Hood raised and secured (TM 9-2320-272-10).

Cap and plug set (Appendix C, Item 14)

Coolant drained below water manifold level

Antiseize tape (Appendix C, Item 72)

(para. 3-53).

Fan and fan shroud removed (para. 3-64).

Drivebelt removed (para. 3-71).

1.

Disconnect air line (6) and elbow (2) from actuator (3).

2.

Disconnect air line (5) and elbow (4) from actuator (3).

NOTE

Note position of actuator for installation.

3.

Remove actuator (3) from radiator inlet tube (1).

4.

Disconnect air line (5) from elbow (7).

NOTE

Assistant will support fan clutch while removing screws.

5.

Remove four screws (10), washers (9), and fan clutch (11) from engine (8).

6.

Remove elbow (7) from fan clutch (11).

1.

Clean all parts (para. 2-14).

2.

Inspect air lines (5) and (6) for cracks, kinks, and wear.

3.

Inspect other parts (para. 2-15).

4.

Replace all parts failing inspection.

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