AN IMPROPER PINCH BOLT AND NUT MAY HAVE BEEN USED IN THE CLAMPING OF THE STEERING SHAFT TO THE STEERING
— Recall Campaign #79V082000
AN IMPROPER PINCH BOLT AND NUT MAY HAVE BEEN USED IN THE CLAMPING OF THE STEERING SHAFT TO THE STEERING GEAR INPUT SHAFT. DUE TO CLAMPING FORCE LOADS APPLIED AT THE BOLT, THE NUT COULD YIELD, RESULTING IN LOOSENESS OF THE INPUT SHAFT YOKE. SHOULD THIS CONDITION GO UNNOTICED, SPLINE WEAR COULD CAUSE SHAFT SEPARATION.
The recall was influenced by the manufacturer with about 12,000 units affected.
NHTSA Safety Recall Notice
79V082000
| Manufacturer: | Mack Trucks, Inc. |
|---|---|
| Recall date: | April 03, 1979 |
| NHTSA Campaign #: | 79V082000 |
| Units affected: | 12,000 |
- Description:
- AN IMPROPER PINCH BOLT AND NUT MAY HAVE BEEN USED IN THE CLAMPING OF THE STEERING SHAFT TO THE STEERING GEAR INPUT SHAFT. DUE TO CLAMPING FORCE LOADS APPLIED AT THE BOLT, THE NUT COULD YIELD, RESULTING IN LOOSENESS OF THE INPUT SHAFT YOKE. SHOULD THIS CONDITION GO UNNOTICED, SPLINE WEAR COULD CAUSE SHAFT SEPARATION.
- Consequeces:
- Corrective action:
- VEHICLES WILL BE INSPECTED AND, IF NECESSARY, THE CORRECT FASTENERS WILL BE INSTALLED AT NO CHARGE TO OWNER.
- Notes:
- VEHICLE DESCRIPTION: HEAVY TRUCKS.SYSTEM: STEERING; STEERING SHAFT CLAMP BOLT.CONSEQUENCES OF DEFECT: THIS DEFECT COULD CAUSE LOSS OF VEHICLE CONTROL AND AVEHICLE ACCIDENT.