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 412 of 991

3-411. SWINGFIRE

TM 9-2320-272-24-2

THIS TASK COVERS:

a. Removal

b. Installation

INITIAL SETUP:

APPLICABLE MODELS

REFERENCES (TM)

All

TM 9-2320-272-10

TOOLS

TM 9-2320-272-24P

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

EQUIPMENT CONDITION

MATERIALS/PARTS

Four locknuts (Appendix C, Item 291)

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

• Swingfire heater oil pan shroud and exhaust tube

removed (para. 3-409).

NOTE

Have drainage container ready to catch excess coolant.

1.

Loosen clamps (5) and (13) and remove hoses (4) and (14) from swingfire heater water jacket (9).

2.

Remove locknut (1), shield support (15), and screw (11) from bracket (2) and water jacket (9).

Discard locknut (1).

3.

Remove locknut (6), screw (10), and water jacket (9) from bracket (8). Discard locknut (6).

4.

Remove two locknuts (12), screws (7), and bracket (8) from crossmember (3). Discard locknuts (12).

1.

Install bracket (8) on crossmember (3) with two screws (7) and new locknuts (12).

2.

Install water jacket (9) on bracket (8) with screw (10) and new locknut (6).

3.

Install shield support (15) on bracket (2) and water jacket (9) with screw (11) and new locknut (1).

4.

Install hoses (4) and (14) on water jacket (9) with clamps (5) and (13).

3-1020