On certain trucks, the bolt that attaches the pitman arm to the steering gear may not be tightened properly.
Steering
Mack DM Steering problems by year
0 complaints filed with NHTSA about the Mack DM's steering. Loss of power steering, stiff or loose steering, wandering, column and rack problems.
Steering complaints by model year
Steering recalls
On certain heavy-duty, class 8 trucks, the lower and upper steering shaft pinch bolts were improperly tightened.
In the involved trucks it is possible the adjustable steering column rear mounting bracket could fail, allowing steering wheel assembly to fall down onto the operator"s lap.
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...
The existing cross steering arms may have insufficient fatigue life in the neck area. This is near the boss for the cross steering tube ball joint connection. Failure of either of the cross steering levers could lead to loss of steering control of the right...
Latest DM steering complaints
No complaints in this area yet.
Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked daily. Complaints are owners' own reports and are not verified. How we use the data