MACK U 1977: STEERING: STEERING WHEEL/HANDLE BAR
NHTSA Campaign ID Number: 79V082000
| Make | Model | Year |
|---|---|---|
| MACK | U | 1977 |
| Date Owners Notified | Date Received by ODI | Date Added to Database |
| 1979-08-13 | 1979-04-03 | 1979-10-12 |
Production Dates: 1977-03-01 - 1978-11-01
Manufacturers Involved: Mack Trucks, Inc.
Component: STEERING: STEERING WHEEL/HANDLE BAR
Potential Number Of Units Affected: 12000
Report Initiator: MFR MFR Report
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.
VEHICLES WILL BE INSPECTED AND, IF NECESSARY, THE CORRECT FASTENERS WILL BE INSTALLED AT NO CHARGE TO OWNER.
VEHICLE DESCRIPTION: HEAVY TRUCKS.SYSTEM: STEERING; STEERING SHAFT CLAMP BOLT.CONSEQUENCES OF DEFECT: THIS DEFECT COULD CAUSE LOSS OF VEHICLE CONTROL AND AVEHICLE ACCIDENT.
