SUPERIOR SCHOOL BUS 1977: STEERING:GEAR BOX (OTHER THAN RACK AND PINION)
NHTSA Campaign ID Number: 80V018000
| Make | Model | Year |
|---|---|---|
| SUPERIOR | SCHOOL BUS | 1977 |
| Date Owners Notified | Date Received by ODI | Date Added to Database |
| 1980-08-15 | 1980-02-26 | 1980-03-07 |
Production Dates: 1976-06-01 - 1978-07-01
Manufacturers Involved: SHELLER-GLOBE CORPORATION
Component: STEERING:GEAR BOX (OTHER THAN RACK AND PINION)
Potential Number Of Units Affected: 166
Report Initiator: MFR MFR Report
A HIGH STRESS CRACK MAY EXIST ON THE LEFT-HAND FRAME RAIL ON THE FORWARD CONTROL CHASSIS, IN THE REGION OF THE FRONT LEFT-HAND HANGER. IN ADDITION, THE KEY BETWEEN THE STEERING GEAR BOX OUTPUT SHAFT AND THE UNIVERSAL JOINT MAY BE LOOSE.
A REINFORCEMENT REPAIR KIT WILL BE INSTALLED TO CORRECT THE HIGH STRESS CRACK PROBLEM. A HIGH STRENGTH BOLT WILL ALSO BE INSTALLED TO MODIFY THE GEAR BOX OUTPUT SHAFT.
VEHICLE DESCRIPTION: SCHOOL BUSES.SYSTEM: STRUCTURE; LEFT-HAND FRAME RAIL, AND STEERING; GEAR BOX OUTPUT SHAFTAND UNIVERSAL JOINT YOKE; KEY.CONSEQUENCES OF DEFECT: THE STRESS CRACK IN THE FRAME RAIL MAY CAUSE A WOBBLEOR SHIMMY CONDITION IN THE FRONT END OF THE BUS. THIS COULD RESULT IN LOSS OFVEHICLE CONTROL AND AN ACCIDENT. THE LOOSE KEY COULD ALSO CAUSE LOSS OFSTEERING CONTROL AND AN ACCIDENT.NOTE: IF WOBBLE OR SHIMMY IS NOTICED DURING VEHICLE OPERATION, VEHICLE SPEEDSHOULD BE DECREASED. IF IT PERSISTS, DISCONTINUE SERVICE UNTIL THE PROBLEM ISCORRECTED. ALSO, THE CONNECTION BETWEEN THE STEERING GEAR OUTPUT SHAFT AND THEUNIVERSAL JOINT SHOULD BE CHECKED. IF THE KEY IS LOOSE, DISCONTINUE SERVICEUNTIL CORRECTED.
