Section VII. BRAKE SYSTEM MAINTENANCE

TM 10-3930-638-24&P

Section VII. BRAKE SYSTEM MAINTENANCE

This section contains the information you'll need to maintain the park-

ing brake and service brake systems. It gives you instructions on how to

troubleshoot problems, and repair or replace the components that are

within the scope of organizational maintenance.

Para

Service Brake Maintenance . . . . . . . . . . . . . 243

Troubleshooting Symptom Index . . . . . . . . . . . 2-40

Service Brake Assembly . . . . . . . . . . . . . . ...2-43a

Brake System Troubleshooting . . . . . . . . . . . . . . 2-41

Brake Hoses, Lines and Fittings . . . . . . . . . . . 2-43b

Parking Brake Maintenance . . . . . . . . . . . . . . . . 2-42

Hydraulic Brake Valve . . . . . . . . . . . . . . . . . . 2-43c

Parking Brake Linkage . . . . . . . . . . . . . . . . . . 2-42a

Declutch Valve . . . . . . . . . . . . . . . . . . . . . ..2-43d

Parking Brake Assembly . . . . . . . . . . . . . . . . . 2-42b

Brake Pedal and Declutch Pedal . . . . . . . . . . . . 2-43e

2-40. TROUBLESHOOTING SYMPTOM INDEX

Para/Malfunction Page

BRAKE SYSTEM

2-259

241/1

Parking brake does not apply (will not hold). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-261

2-41/2

Uneven or erratic service brakes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-262

2-41/3

Service brakes spongy . . . . . . . . . . . . . . . . . . . . . . . . . . . .............

2-263

2-41/4

Service brakes grab . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..

2-264

241/5

Service brakes squeak . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

2-264

241/6

Service brakes overheat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..

2-265

241/7

Excessive service brake pedal travel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-266

2-41/8

Excessive service brake pedal effort required . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-269

241/9

Service brakes groan at end of stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-269

2-41/10

Scraping noise from service brakes when applied . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-270

241/11

Stop light inoperative . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

2-270

241/12

Declutch pedal does not neutralize transmission . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2-41. BRAKE SYSTEM TROUBLESHOOTING

MALFUNCTION

TEST OR INSPECTION

CORRECTIVE ACTION

1. PARKING BRAKE DOES NOT APPLY (WILL NOT HOLD)

Release parking brake lever and turn knob on top of lever clockwise to adjust cable.

Step 1.

Pull parking brake lever up while observing actuating lever.

Actuating lever should move.

a. If actuating lever moves, proceed to step 3.

b. If actuating lever does not move, proceed to step 2.

2-259