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 1085 of 1469

DISASSEMBLY

1.

Remove filter (Figure 1, Item 9) from valve body (Figure 1, Item 10). Discard filter.

WARNING

Wheel valve cover is under spring tension. Wear eye protection when disassembling wheel

valve. Failure to comply may result in injury or death to personnel.

2.

Holding cover (Figure 1, Item 4) in place, remove four nuts (Figure 1, Item 12), screw assembled lockwasher

(Figure 1, Item 1), and three screw assembled lockwashers (Figure 1, Item 2) from base (Figure 1, Item 11),

valve body (Figure 1, Item 10), and cover. Discard screw assembled lockwashers.

3.

Carefully remove cover (Figure 1, Item 4), spring (Figure 1, Item 5), plug (Figure 1, Item 6), diaphragm

(Figure

1,

Item

7), and base (Figure 1, Item 11) from valve body (Figure 1, Item 10). Discard spring

and

diaphragm.

4.

Remove ball (Figure 1, Item 3) from cover (Figure 1, Item 4). Discard ball.

5.

Remove tank valve (Figure 1, Item 8) from valve body (Figure 1, Item 10).

6.

For General Cleaning Instructions, refer to (Volume 5, WP

0819).

7.

For General Inspection Instructions, refer to (Volume 5, WP

0819).

8.

Inspect base (Figure 1, Item 11), valve body (Figure 1, Item 10), cover (Figure 1, Item 4), and tank valve

(Figure

1,

Item

8) for cracks and stripped threads. Replace part(s) if damaged.

TM 9-2320-272-23-3

0489

0489-2