TM-9-2320-272-23-3

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

TECHNICAL MANUAL; FIELD MAINTENANCE MANUAL; VOLUME 3 OF 5

SEPTEMBER 2012

TM-9-2320-272-23-3 - Page 851 of 1469

REAR AIR COUPLINGS REMOVAL (M929/A1/A2, M931/A1/A2, M934/A1/A2, M936/A1/A2)

NOTE

Left and right (service and emergency) rear couplings are removed the same way.

1.

Remove dummy coupling (Figure 3, Item 10) and S-hook (Figure 3, Item 13) from air coupling

(Figure

3,

Item

9) and bracket (Figure 3, Item 14).

2.

Remove air coupling (Figure 3, Item 9) from pipe nipple (Figure 3, Item 11).

3.

Disconnect air line (Figure 3, Item 1) from adapter (Figure 3, Item 2).

4.

Remove adapter (Figure 3, Item 2) from connector (Figure 3, Item 21).

5.

Remove nut (Figure 3, Item 3) and lockwasher (Figure 3, Item 4) from connector (Figure 3, Item 21).

Discard

lockwasher.

6.

Remove two screws (Figure 3, Item 8) and identification plate (Figure 3, Item 12) from bracket

(Figure

3,

Item

14).

7.

Remove two locknuts (Figure 3, Item 17), washers (Figure 3, Item 16), screws (Figure 3, Item 5), plate

(Figure

3,

Item

6), and bracket (Figure 3, Item 14) from frame rail (Figure 3, Item 7). Discard locknuts.

8.

Remove pipe nipple (Figure 3, Item 11) from elbow (Figure 3, Item 15).

9.

Place valve (Figure 3, Item 18) in soft-jawed vise and remove elbow (Figure 3, Item 15) from valve.

10.

Remove connector (Figure 3, Item 21) from elbow (Figure 3, Item 20).

11.

Remove elbow (Figure 3, Item 20) from pipe nipple (Figure 3, Item 19).

12.

Remove pipe nipple (Figure 3, Item 19) from valve (Figure 3, Item 18).

13.

Remove valve (Figure 3, Item 18) from soft-jawed vise.

TM 9-2320-272-23-3

0450

0450-6