Service brakes, air: supply: reservoir/tank
- Component
- Service brakes, air: supply: reservoir/tank
- Manufacturer
- PACCAR, INCORPORATED
- Vehicles affected
- 23
- Reported to NHTSA
- 2001-06-12
- Owners notified
- 2001-07-16
Defect description
VEHICLE DESCRIPTION: CERTAIN VEHICLES HAVING AN INTENDED SERVICE CODE OF "FIRE SERVICE" AND EITHER TYPE 24 OR LARGER FRONT BRAKE CHAMBERS OR TYPE 36 REAR BRAKE CHAMBERS FAIL TO COMPLY WITH REQUIREMENTS OF FMVSS NO. 121, "AIR BRAKE SYSTEMS." THESE VEHICLES WERE BUILT WITH A COMBINED AIR RESERVOIR VOLUME LESS THAN 12 TIMES THE COMBINED VOLUME OF ALL SERVICE CHAMBERS.
Safety risk
UNUSUALLY FREQUENT APPLICATIONS OF THE AIR BRAKES COULD DEPLETE THE AVAILABLE AIR SUPPLY MORE QUICKLY THAN EXPECTED.
Manufacturer remedy
DEALERS WILL INSTALL AN ADDITIONAL AIR TANK ON CHASSIS WITH A SINGLE REAR AXLE. ON TANDEM REAR AXLE CHASSIS, DEALER WILL REPLACE AN EXISTING AIR TANK WITH A LARGER AIR TANK. OWNER NOTIFICATION BEGAN JULY 16, 2001. OWNERS WHO TAKE THEIR VEHICLES TO AN AUTHORIZED DEALER ON AN AGREED UPON SERVICE DATE AND DO NOT RECEIVE THE FREE REMEDY WITHIN A REASONABLE TIME SHOULD CONTACT KENWORTH AT 1-425-828-5000.