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 751 of 1469

BRAKE CHAMBER 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

Tag lines for installation.

1.

Disconnect two vent lines (Figure 1, Item 3) from tee (Figure 1, Item 4).

2.

Disconnect supply line (Figure 1, Item 13) from elbow (Figure 1, Item 2).

3.

Disconnect control line (Figure 1, Item 1) from elbow (Figure 1, Item 12).

4.

Loosen collet nut (Figure 1, Item 9) and remove two nuts (Figure 1, Item 5), washers (Figure 1, Item 6), U-bolt

(Figure 1, Item 10), and bracket (Figure 1, Item 7) from combination spring and service brake chamber

(Figure

1, Item 11).

CAUTION

Ensure wedge assembly does not fall out of plunger housing. Failure to comply may result

in damage to the equipment.

5.

Remove combination spring and service brake chamber (Figure 1, Item 11) from plunger housing

(Figure

1,

Item 8) and pull straight away from plunger.

TM 9-2320-272-23-3

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