NHTSA Campaign 91V080000
STEERING:HYDRAULIC POWER ASSIST SYSTEM
Issued by MACK TRUCKS, INCORPORATED · Reported May 23, 1991 · 35 vehicles affected
What's wrong
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 .
Consequence
THIS FLEXING CAN CAUSE SEAL FAILURE OR CYLINDER FAILUREOF THE HYDROBOOST UNIT AND RESULT IN LOSS OF STEERING CONTROL AND RESULT IN AVEHICLE ACCIDENT.
Remedy
REPLACE INCORRECTLY BUILT BOOST CYLINDERS.
Vehicles affected by this recall
| Make | Model | Year | Units |
|---|---|---|---|
| MACK | CF | 1988 | 35 |
| MACK | CF | 1989 | 35 |
Source: NHTSA Campaign 91V080000 on nhtsa.gov. To check the current repair status for a specific vehicle, use our free VIN decoder.