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 857 of 1469

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

NOTE

•

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

•

Fittings must be cleaned and inspected for cracks and stripped threads.

•

Apply sealant to all male pipe threads before installation.

1.

Install bracket (Figure 6, Item 14) and plate (Figure 6, Item 6) on frame rail (Figure 6, Item 7) with two screws

(Figure 6, Item 5), washers (Figure 6, Item 16), and locknuts (Figure 6, Item 17).

2.

Install identification plate (Figure 6, Item 12) on bracket (Figure 6, Item 14) with two screws (Figure 6, Item 8).

3.

Install valve (Figure 6, Item 18), pipe nipple (Figure 6, Item 19), elbow (Figure 6, Item 20), connector

(Figure

6,

Item

21), elbow (Figure 6, Item 15), and pipe nipple (Figure 6, Item 11) on bracket

(Figure

6,

Item

14) and plate (Figure 6, Item 6) with lockwasher (Figure 6, Item 4) and nut (Figure 6, Item 3).

4.

Install adapter (Figure 6, Item 2) in connector (Figure 6, Item 21).

5.

Connect air line (Figure 6, Item 1) to adapter (Figure 6, Item 2).

6.

Install air coupling (Figure 6, Item 9) on pipe nipple (Figure 6, Item 11).

7.

Install dummy coupling (Figure 6, Item 10) and S-hook (Figure 6, Item 13) on air coupling (Figure 6, Item 9)

and bracket (Figure 6, Item 14).

TM 9-2320-272-23-3

0450

0450-12