TM-9-2320-272-24-3

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

TECHNICAL MANUAL; UNIT, DIRECT SUPPORT, AND GENERAL SUPPORT MAINTENANCE MANUAL; VOLUME 3 OF 4

JUNE 1998

TM-9-2320-272-24-3 - Page 758 of 799

TM 9-2320-272-24-3

4-223. PERSONNEL FUEL BURNING HEATER EXHAUST TUBE (M939A2)

REPLACEMENT

THIS TASK COVERS:

a. Removal

b. Installation

INITIAL SETUP:

APPLICABLE MODELS

REFERENCES (TM)

M939A2

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).

Three cotter pins (Appendix D, Item 71)

Locknut (Appendix D,Item 334)

GENERAL SAFETY INSTRUCTIONS

Do not touch hot exhaust system components with

bare hands.

WARNING

Do not handle hot exhaust tube with bare hands. Injury to

personnel may result.

1.

Remove locknut (3), washer (2), screw (l), and clamp (12) from firewall (6) and exhaust tube (10).

Discard locknut (3).

2.

Remove cotter pin (9) and exhaust tube (10) from elbow (8). Discard cotter pin (9).

3.

Remove cotter pins (7) and (4) and elbows (8) and (11) from heater exhaust outlet (5). Discard cotter

pins (4) and (7).

1.

Install elbows (11) and (8) on heater exhaust outlet (5) with new cotter pins (4) and (7).

2.

Install exhaust tube (10) on elbow (8) with new cotter pin (9).

3.

Install clamp (12) on exhaust tube (10) and firewall (6) with screw (l), washer (2), and new

locknut (3).

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