SYMPTOM
PROBLEM: REMEDY
INSUFFICIENT BRAKES
Brakes need adjusting: Adjust brakes.
Cams need lubricating: Lubricate cams.
Brakes need relining: Reline brakes.
Low air pressure: Troubleshoot air system.
Relay emergency valve failure: Replace.
Brakes overheated: Stop and allow brakes to cool,
locate cause of overheating.
BRAKES GRABBING
Grease on brake linings: Reline brakes.
Brake rigging binds: Align brakes or replace bent parts.
Brake valve on tractor failed or worn: Replace valve.
Relay emergency valve failed or worn: Replace valve.
EXCESSIVE LEAKAGE WITH BRAKES
RELEASED
Relay emergency valve leaking: Replace valve.
Leaking tube or hose: Replace part(s).
EXCESSIVE LEAKAGE WITH BRAKES APPLIED
Relay emergency valve leaking: Replace valve.
Leaking brake chamber diaphragm: Replace brake
chamber.
Call Factory or see qualified Trailer/Brake Technician
Leaking tubing or hose: Replace part(s).
EXCESSIVE LEAKAGE WITH EMERGENCY
SYSTEM ONLY APPLIED - NO LEAKAGE
WITH NORMAL BRAKING
Relay emergency valve failure: Replace valve.
EXCESSIVE WATER PRESENT IN BRAKE
SYSTEM
Reservoir not drained often enough: Drain reservoir
daily.
EXCESSIVE OIL PRESENT IN BRAKE SYSTEM
Compressor on tractor passing excessive oil: Refer to
Tractor Repair manual.
BRAKE WILL NOT APPLY PROPERLY
Flat spot on cam roller or camshaft: Replace and
lubricate.
BRAKES WILL NOT APPLY WHEN
EMERGENCY LINE IS DISCONNECTED
Initial air pressure too low: Allow air system to build up
to minimum 90 psi and stabilize.
Relay valve failure: Replace valve.
Air line leak: Locate leak and repair.
Brake chamber leak: Replace brake chamber.
ABS WARNING LIGHT STAYS ON
Refer to Rockwell WABCO ABS maintenance manual
supplied with semitrailer for system function and use
of blink code diagnostics.
5-6
Brakes, Continued
Содержание 330A
Страница 3: ...MODEL 330A SEMITRAILER OPERATOR S MANUAL PURCHASED FROM DATE ADDRESS PHONE NO SERIAL NO...
Страница 8: ......
Страница 12: ......
Страница 20: ...3 8 Figure 3 3 Steps for Loading and Unloading...
Страница 26: ...3 14 Figure 3 7 Rear Impact Guard System...
Страница 34: ...4 6 Figure 4 2 330A Wiring Diagram...
Страница 35: ...4 7 Figure 4 3 Remote Wiring Diagram...
Страница 40: ...4 12 Figure 4 6 Examples of Camber Figure 4 7 Checking Axle for Bend...
Страница 44: ...4 16 Figure 4 11 Axle and Brake Assembly...
Страница 47: ...4 19 Figure 4 13 Three Spoke Wheel and Drum Figure 4 14 Outboard Mount Hub and Drum...
Страница 52: ...4 24 Figure 4 19 Mounting Tires and Wheels Figure 4 20 Stud Tightening Sequence...
Страница 54: ......
Страница 62: ...NOTES 5 8...