TM-9-2320-338-10

TRUCK, CARGO, 8X8, M977A4

TECHNICAL MANUAL; OPERATOR'S MANUAL

OCTOBER 2008

TM-9-2320-338-10 - Page 453 of 1120

OPERATOR MAINTENANCE

PERFORM IMMEDIATE ACTION FOR LOSS OF AIR SUPPLY SYSTEM PRESSURE

INITIAL SETUP:

Not Applicable

PERFORM PROCEDURE

1.

If brake system failure (LOW AIR) indicator (1) illuminates and warning buzzer sounds

while driving vehicle, check both FRONT (2) and REAR (3) air pressure gauges.

TRAILER

AIR SUPPLY

PARKING

BRAKE

AIR BRAKE

8X8

M

M

5

6

4

2

1

3

8

7

Figure 1.

NOTE

If both FRONT and REAR air pressure gauges read zero, skip to Step

(4).

2.

If REAR air pressure gauge (3) reads zero and FRONT air pressure gauge (2) reads

normal air pressure of 100 to 130 psi (7 to 9 bar), complete the following:

a.

Continue operation of vehicle. Brakes on all eight wheels and trailer (if applicable)

will operate.

b.

Notify field level maintenance as soon as possible.

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