NHTSA safety recall

Recall 91V080000

Steering › Hydraulic Power Assist System — Mack · reported 23 May 1991 · 35 vehicles potentially 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 .

The risk

THIS FLEXING CAN CAUSE SEAL FAILURE OR CYLINDER FAILUREOF THE HYDROBOOST UNIT AND RESULT IN LOSS OF STEERING CONTROL AND RESULT IN AVEHICLE ACCIDENT.

The fix

REPLACE INCORRECTLY BUILT BOOST CYLINDERS.

SYSTEM: STEERING POWER ASSIST, HYDROBOOST ASSEMBLY.VEHICLE DESCRIPTION: CF AERIALSCOPE MODEL.

NHTSA campaign
91V080000
Filed by
Mack Trucks, Incorporated
Report received
23 May 1991
Owners notified
2 May 1991
Potentially affected
35

Vehicles covered by this recall

Whether a particular car is affected and still unrepaired depends on its VIN — a model year being listed does not mean every car of that year is included. Check any VIN free on CarLogs, or at nhtsa.gov/recalls.

1988 Mack Cf 1989 Mack Cf

Is this car's recall fixed?

Recall repairs are free at any franchised dealer, for the life of the vehicle. A CarLogs report shows the recall status for a specific VIN as reported by the manufacturer — whether it's open or repaired, and whether the fix is available yet.

Source: NHTSA Office of Defects Investigation recall database. Look up another campaign →