Steering: steering wheel/handle barRecall 79V-082 · Mack vehicles

MACK TRUCKS, INCORPORATED recall 79V-082 covers 12,000 Mack vehicles for a steering: steering wheel/handle bar problem, reported to NHTSA on April 3, 1979.

Vehicles repairedNo manufacturer report yet

Vehicles affected12,0004 models

ReportedApr 3, 1979Owners notified Aug 13, 1979

Complaints since0Same system, after the recall

Source: NHTSA recall 79V082000 and manufacturer quarterly reports. Started by the manufacturer.

What's wrong

The problem

AN IMPROPER PINCH BOLT AND NUT MAY HAVE BEEN USED IN THE CLAMPING OF THE STEERING SHAFT TO THE STEERING GEAR INPUT SHAFT. DUE TO CLAMPING FORCE LOADS APPLIED AT THE BOLT, THE NUT COULD YIELD, RESULTING IN LOOSENESS OF THE INPUT SHAFT YOKE. SHOULD THIS CONDITION GO UNNOTICED, SPLINE WEAR COULD CAUSE SHAFT SEPARATION.

What to do

The fix

VEHICLES WILL BE INSPECTED AND, IF NECESSARY, THE CORRECT FASTENERS WILL BE INSTALLED AT NO CHARGE TO OWNER.

VEHICLE DESCRIPTION: HEAVY TRUCKS.SYSTEM: STEERING; STEERING SHAFT CLAMP BOLT.CONSEQUENCES OF DEFECT: THIS DEFECT COULD CAUSE LOSS OF VEHICLE CONTROL AND AVEHICLE ACCIDENT.

Recall repairs are free. Confirm whether this recall is open on your vehicle by entering its VIN at nhtsa.gov/recalls.

4 models

Vehicles in this recall

Mack DM1977, 1978

Mack R1977, 1978

Mack RD1977, 1978

Mack U1977, 1978

Built from March 1, 1977 to November 1, 1978. Not every vehicle in these model years is included; check by VIN.