MACK CF 1989: STEERING:HYDRAULIC POWER ASSIST SYSTEM
NHTSA Campaign ID Number: 91V080000
| Make | Model | Year |
|---|---|---|
| MACK | CF | 1989 |
| Date Owners Notified | Date Received by ODI | Date Added to Database |
| 1991-05-02 | 1991-05-23 | 1991-05-24 |
Production Dates: 1988-03-01 - 1989-06-01
Manufacturers Involved: Mack Trucks, Inc.
Component: STEERING:HYDRAULIC POWER ASSIST SYSTEM
Potential Number Of Units Affected: 35
Report Initiator: ODI ODI Report
INCORRECT MANUFACTURE OF THE HYDROBOOST CYLINDER ALLOWS THE BALL SOCKET CLAMP TO CONTACT RIGHT SIDE STEERING LEVER ON AN EXTREME LEFT TURN AND CAUSE FLEXING OF THE CYLINDER ROD .
THIS FLEXING CAN CAUSE SEAL FAILURE OR CYLINDER FAILUREOF THE HYDROBOOST UNIT AND RESULT IN LOSS OF STEERING CONTROL AND RESULT IN AVEHICLE ACCIDENT.
REPLACE INCORRECTLY BUILT BOOST CYLINDERS.
SYSTEM: STEERING POWER ASSIST, HYDROBOOST ASSEMBLY.VEHICLE DESCRIPTION: CF AERIALSCOPE MODEL.
