Chapter 11. BRAKE SYSTEM MAINTENANCE

TM 9-2320-366-20-4

CHAPTER 11

BRAKE SYSTEM MAINTENANCE

RESTRICTED MAINTENANCE NOTICE

Units not authorized SC 4910-95-CL-A72 (SHOP EQUIPMENT, COMMON NO. 2) in their T.O.E. may

be unable to perform some of the maintenance tasks described in this chapter. If the required tools

are not authorized, the equipment must be submitted to DS Maintenance for repair.

Section I. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1

11-1. INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11-1

Section II. MAINTENANCE PROCEDURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.

. 11-2

11-2. FRONT BRAKE SHOES REPLACEMENT/ADJUSTMENT . . . . . . . . . . . . . . . . . .

.

. 11-2

11-3. REAR BRAKE SHOES REPLACEMENT/ADJUSTMENT . . . . . . . . . . . . . . . . . . . .

.

. 11-9

11-4. FRONT BRAKE PLUNGER ASSEMBLY REPLACEMENT/REPAIR . . . . . . . . . . . .

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11-17

11-5. REAR BRAKE PLUNGER ASSEMBLY REPLACEMENT/REPAIR . . . . . . . . . . . . .

.

11-23

11-6. REAR SPRING BRAKE CAGING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.

11-30

11-7. FRONT BRAKE AIR CHAMBER REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . .

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11-33

11-8. REAR BRAKE AIR CHAMBER REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . .

.

11-37

11-9. FOOT CONTROL VALVE AND BRAKE FOOT PEDAL REPLACEMENT . . . . . . . .

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11-49

11-10. LOAD SENSING VALVE AND CONTROL CABLE REPLACEMENT/ADJUSTMENT

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11-57

11-11. LOAD AVERAGING CHANNEL REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . .

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11-70

11-12. ANTI-COMPOUNDING RELAY VALVE REPLACEMENT . . . . . . . . . . . . . . . . . . .

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11-73

11-13. INVERSION VALVE REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.

11-77

11-14. RELAY VALVE REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.

11-81

11-15. BOOSTER VALVE REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.

11-85

11-16. TWO-WAY CHECK VALVE REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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11-90

11-17. FRONT AXLE QUICK RELEASE VALVE REPLACEMENT . . . . . . . . . . . . . . . . . .

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11-93

11-18. AIR BRAKE PROTECTING VALVE REPLACEMENT . . . . . . . . . . . . . . . . . . . . . .

.

11-97

11-19. PARK CONTROL TWO-WAY CHECK VALVE REPLACEMENT . . . . . . . . . . . . . .

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11-107

11-20. SYSTEM PARK AND TRAILER AIR SUPPLY VALVES REPLACEMENT . . . . . . . .

.

11-113

11-21. BRAKE AIR HOSES REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.

11-118

11-22. SECONDARY AND PRIMARY AIR TANKS REPLACEMENT . . . . . . . . . . . . . . . .

.

11-135

11-23. FRONT GLADHAND REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.

11-151

11-24. REAR GLADHAND REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

.

11-154

11-25. SERVICE GLADHAND TWO-WAY CHECK VALVE REPLACEMENT . . . . . . . . . . .

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11-158

11-26. EMERGENCY GLADHAND TWO-WAY CHECK VALVE REPLACEMENT . . . . . . .

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11-161

11-27. STOPLIGHT SWITCH REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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11-164

11-28. FRONT GLADHAND ONE-WAY CHECK VALVE REPLACEMENT . . . . . . . . . . . .

.

11-166

11-29. PRESSURE PROTECTION VALVE REPLACEMENT . . . . . . . . . . . . . . . . . . . . . .

.

11-170

11-30. LOW PRESSURE TRANSMITTER TWO-WAY CHECK VALVE REPLACEMENT . .

.

11-182

11-31. AIR COMPRESSOR GOVERNOR ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . .

.

11-186

11-32. M1088 TRAILER SERVICE BRAKE VALVE REPLACEMENT . . . . . . . . . . . . . . . .

.

11-189

11-33. M1088 GLADHAND SELECTOR VALVE REPLACEMENT . . . . . . . . . . . . . . . . . .

.

11-193

11-34. M1088 TRAILER STOPLIGHT SWITCH REPLACEMENT . . . . . . . . . . . . . . . . . . .

.

11-205

Section I.

INTRODUCTION

11-1. INTRODUCTION

This chapter contains maintenance instructions for replacing, repairing, and adjusting brake system components

authorized by the Maintenance Allocation Chart (MAC) at the Unit Maintenance level.

Change 1

11-1