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 616 of 1015

3-87. AIR

TM 9-2320-272-24-1

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

Two lockwashers (Appendix D, Item 352)

Antiseize tape (Appendix C. Item 72)

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

Air reservoirs drained (TM 9-2320-272-10).

Battery ground cables disconnected (para. 3-126).

NOTE

The primary and secondary air pressure gauges are removed and

installed in the same manner.

1.

Remove eight screws (7) from instrument cluster (6).

2.

Pull instrument cluster (6) away from instrument panel (8).

NOTE

Tag air line for installation.

3.

Disconnect air line (1) from primary air gauge (5).

4.

Remove two nuts (2), lockwashers (3), and gauge mounting bracket (4) from primary air gauge (5).

Discard lockwashers (3).

5.

Remove primary air gauge (5) from instrument cluster (6).

1.

Install primary air gauge (5) on instrument cluster (6).

2.

Install gauge mounting bracket (4) on primary air gauge (5) with two new lockwashers (3) and

nuts (2).

NOTE

Male pipe threads must be wrapped with antiseize tape before

installation.

3.

Connect air line (1) to primary air gauge (5).

4.

Install instrument cluster (6) on instrument panel (8) with eight screws (7).

3-252