SERVICE BRAKES, AIR:SUPPLY:LOW PRESSURE WARNING:SWITCH
SWITCHES MAY NOT ACTUATE THE SERVICE RESERVOIR LOW PRESSURE WARNING BUZZERS AND LIGHTS AT PRESSURES BELOW 60 POUNDS PER SQUARE INCH. CONSEQUENCE OF DEFECT: DRIVER WOULD NOT BE WARNED OF AIR BRAKE SYSTEM LOW PRESSURE AND LOSS OF BRAKE COULD BE EXPERIENCED WITHOUT WARNING.
Remedy: REPLACE LOW PRESSURE SWITCHES.
9,198 vehicles affected
PARKING BRAKE:CONVENTIONAL
IMPROPERLY HEAT TREATED STEEL ROLLERS USED IN THE REAR WHEEL PARKING BRAKE SYSTEM CAUSES THE ROLLERS TO BECOME BRITTLE AND MAY FRACTURE. CONSEQUENCE OF DEFECT: ROLLERS COULD FRACTURE WHEN THE PARKING BRAKES ARE SET, RESULTING IN REDUCTION OR COMPLETE LOSS OF PARKING BRAKE HOLDING CAPABILITY, WHICH MAY LEAD TO AN ACCIDENT.
Remedy: REPLACE WEDGE BETWEEN ROLLERS AND ROLLERS ASSEMBLIES.
1,250 vehicles affected