Trailer hitches: fifth wheel assembly
- Component
- Trailer hitches: fifth wheel assembly
- Manufacturer
- OSHKOSH TRUCK CORPORATION
- Vehicles affected
- 201
- Reported to NHTSA
- 1993-04-20
- Owners notified
- 1993-04-07
Defect description
THE CROSSHEAD KING PIN FORGINGS OF THE UPPER COUPLING ASSEMBLY CAN CRACK, CHIP, OR BREAK OFF. THIS CAN CAUSE COUPLER SEPARATION.
Safety risk
COUPLER SEPARATION CAN RESULT IN THE PIGGY-BACK TRAILERSEPARATING FROM ITS TOWING VEHICLE AND/OR A RAIL CAR, RESULTING IN A POSSIBLEVEHICLE ACCIDENT.
Manufacturer remedy
REPLACE DEFECTIVE KING PINS. OSHKOSH WILL WARRANT THE ENTIRE UPPER COUPLING ASSEMBLY FOR TEN YEARS AFTER INSPECTION AND REPAIRS.