Recall campaign91V080000
Recall 91V080000: Mack trucks, incorporated
Steering › Hydraulic power assist system
- Report received
- May 23, 1991
- Manufacturer
- Mack trucks, incorporated
- Potentially affected
- 35vehicles
- Model years
- —
Check your own vehicle. A recall applies only to vehicles within the affected build range. Enter your VIN at nhtsa.gov/recalls. Recall repairs are free at a franchised dealer.
What NHTSA recorded
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 .
Possible 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.
About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 28, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.