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 952 of 1015

TM 9-2320-272-24-1

3-208. AIR COUPLINGS REPLACEMENT (Contd)

c. Rear Air Couplings Removal (M929/A1/A2, M931/A1/A2, M934/A1/A2, M936/A1/A2)

1.

2.

3.

4.

5.

6.

7.

8.

Remove pipe nipple (11) from elbow (15).

9.

Place valve (18) in soft-jawed vise and remove elbow (15) from valve (18).

10.

Remove connector (21) from elbow (20).

11.

Remove elbow (20) from pipe nipple (19).

12.

Remove pipe nipple (19) from valve (18).

13.

Remove valve (18) from soft-jawed vise.

NOTE

Left and right (service and emergency) rear couplings are removed

the same way.

Remove dummy coupling (10) and S-hook (13) from air coupling (9) and bracket (14).

Remove air coupling (9) from pipe nipple (11).

Disconnect air line (1) from adapter (2).

Remove adapter (2) from connector (21).

Remove nut (3) and lockwasher (4) from connector (21). Discard lockwasher (4).

Remove two screws (8) and identification plate (12) from bracket (14).

Remove two locknuts (17), washers (16), screws (5), plate (6), and bracket (14) from frame rail (7).

Discard locknuts (17).

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