CERTAIN HEAVY DUTY TRUCKS FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 121, "AIR BRAKE SYSTEMS." THE PRIMARY AND SECONDARY AIR SUPPLY HOSES FROM THE FOOT VALVE…
CERTAIN SCHOOL BUSES AND HEAVY DUTY TRUCKS BUILT WITH HYDRAULIC BRAKES AND AN AIR POWERED PARKING BRAKE (BRAKE CODE 04GAS) FAIL TO COMPLY WITH THE REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD…
ON CERTAIN MEDIUM AND HEAVY DUTY TRUCKS BUILT WITH DRIVELINE PARKING BRAKE CODES 04GAR, THE PARKING BRAKE ASSEMBLY MAY NOT HOLD THE VEHICLE IN POSITION WHEN SET. FACTORS CONTRIBUTING TO THIS POSSIBILITY…
ON CERTAIN TRUCKS, THE COTTER PIN THAT GOES THROUGH THE DRAG LINK BALL STUD AT THE CONNECTION TO THE PITMAN ARM IS MISSING. THIS PIN PREVENTS THE CASTLE NUT FROM LOOSENING.