Service brakes, air
- Component
- Service brakes, air
- Manufacturer
- PACCAR INCORPORATED
- Vehicles affected
- 65
- Reported to NHTSA
- 2007-03-09
- Owners notified
- 2007-05-21
Defect description
CERTAIN TRUCKS FAIL TO COMPLY WITH THE BRAKE TIMING REGULATORY REQUIREMENTS OF FEDERAL MOTOR VEHICLE SAFETY STANDARD NO. 121, "AIR BRAKE SYSTEMS." THE BRAKE VALVE WAS MOVED TO THE OPPOSITE RAIL, INCREASING THE LENGTH OF THE AIR LINE, WHICH IN TURN INCREASED THE WHEELBASE REQUIRING A DUAL RELAY VALVE SYSTEM. THE VEHICLES WERE MANUFACTURED WITH A SINGLE VALVE SYSTEM.
Safety risk
IF STOPPING DISTANCE WAS LIMITED, A VEHICLE CRASH COULD RESULT.
Manufacturer remedy
DEALERS WILL CONVERT THE SINGLE RELAY VALVE TO A DUAL RELAY VALVE SYSTEM FREE OF CHARGE. THE RECALL BEGAN ON MAY 21, 2007. OWNERS MAY CONTACT KENWORTH AT 425-828-5440.