TM-9-2320-280-20-1

TRUCK, UTILITY: M998 SERIES

TECHNICAL MANUAL; UNIT MAINTENANCE; VOLUME 1 OF 3

JANUARY 1996

TM-9-2320-280-20-1 - Page 550 of 888

TM 9-2320-280-20-1

REFERENCE INFORMATION

BRAKES

Change 2

2-447

WARNING

Make sure the area is clear of personnel and

obstacles prior to performing this test. Failure to do so

may result in serious injury.

PARKING BRAKE TEST PROCEDURE:

1. Depress service brake pedal and start engine.

2. Place transmission shift lever in D (drive) and

transfer case shift lever in H (high).

3. Apply parking brake. Slowly let up on service brake

pedal. Vehicle should remain stationary.

SERVICE BRAKE ROAD TEST PROCEDURE:

1. On an open, smooth, flat surface, accelerate to a

steady, reasonable, safe speed (below posted

limits).

2. Apply pressure on the brake pedal and bring the

vehicle to a stop.

3. Repeat this procedure several times, applying a

different brake pressure each time. Look for the

following symptoms, which may indicate a problem

with the service brakes:

1) Spongy or pulsating brake pedal,

2) Incomplete brake pedal return,

3) Excessive pull to one side,

4) Unusually long braking distance,

5) Rear wheels lock-up before front wheels,

6) Brake warning light comes on while braking, and

7) A squealing, grinding, or chattering noise while

braking.