PREVOST X3-45 Multiplex - Page 452

Section 12: BRAKE AND AIR SYSTEM
PA1562
2
15. STOPLIGHT SWITCHES.................................................................................................................13
16. PARKING BRAKE ALARM SWITCH .............................................................................................13
17. BRAKE RELAY VALVE (R-12 & R-14) ..........................................................................................13
18. QUICK RELEASE VALVES (QR-1)................................................................................................14
19. SPRING BRAKE VALVE (SR-7).....................................................................................................14
20. PRESSURE PROTECTION VALVE (PR-4)....................................................................................14
21. LOW PRESSURE INDICATOR (LP-3)............................................................................................15
22. SHUTTLE-TYPE DOUBLE CHECK VALVE (DC-4).......................................................................15
23. EMERGENCY DOOR OPENING VALVES.....................................................................................15
24. AIR HORN VALVE ..........................................................................................................................15
25. AIR SYSTEM TROUBLESHOOTING .............................................................................................15
26. BRAKE OPERATION......................................................................................................................16
27. AIR BRAKES...................................................................................................................................16
27.1 DISC BRAKES..............................................................................................................................16
27.1.1 Disc Brake Pads....................................................................................................................16
27.1.2 Caliper Maintenance .............................................................................................................16
27.1.3 Roadside Inspection for Knorr/Bendix Air Disc Brakes.........................................................18
27.1.4 Pad Removal.........................................................................................................................18
27.1.5 Checking Pad Wear ..............................................................................................................18
27.1.6 Important Pad and Rotor Measurements..............................................................................19
27.1.7 Checking Caliper Guidance and Seal Condition...................................................................19
27.1.8 Checking the Tappet Boots...................................................................................................20
27.1.9 Pad Installation......................................................................................................................20
27.1.10 Adjusting the Running Clearance......................................................................................20
27.1.11 Brake Tools........................................................................................................................21
27.1.12 Checking Brake Pads........................................................................................................21
27.1.13 Torque specifications.........................................................................................................21
28. SAFE SERVICE PROCEDURES ....................................................................................................21
29. AIR BRAKE TROUBLESHOOTING ...............................................................................................22
30. BRAKE AIR CHAMBER..................................................................................................................24
30.1 MAINTENANCE.............................................................................................................................24
30.2 EMERGENCY/PARKING BRAKE MANUAL RELEASE .........................................................................25
30.3 BRAKE CHAMBER REMOVAL.........................................................................................................25
30.4 BRAKE CHAMBER INSTALLATION...................................................................................................25
30.5 BRAKE CHAMBER DISASSEMBLY ..................................................................................................25
31. ANTI-LOCK BRAKING SYSTEM (ABS).........................................................................................26
31.1 TROUBLESHOOTING AND TESTING................................................................................................27
31.2 AUTOMATIC TRACTION CONTROL (ATC) – ELECTRONIC STABILITY PROGRAM (ESP)........................27