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 771 of 1469

REMOVAL

WARNING

Do not disconnect air lines or hoses before draining air reservoirs. Small parts under pressure

may shoot out with high velocity. Failure to comply may result in injury or death to personnel.

NOTE

•

All air manifold tees are replaced basically the same. This procedure covers the rear

primary relay tee. Notice that only the two primary relay tees use a 45-degree elbow in

addition to a 90-degree elbow.

•

Tag air lines for installation.

•

Scribe fitting directions for installation.

1.

Disconnect right service brake chamber air line (Figure 1, Item 10) from elbow (Figure 1, Item 9).

2.

Disconnect relay valve line (Figure 1, Item 1) from adapter (Figure 1, Item 2).

3.

Disconnect left service brake chamber air line (Figure 1, Item 4) from adapter (Figure 1, Item 3).

4.

Remove screw (Figure 1, Item 6), lockwasher (Figure 1, Item 7), and air manifold tee (Figure 1, Item 8) from

mounting bracket (Figure 1, Item 5). Discard lockwasher.

TM 9-2320-272-23-3

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