NHTSA recall 83V101000
Steering › Gear box (other than rack and pinion)
Mack MS200 and 3 more
The defect
Bolted installation of the steering gear housing has a tendency to loosen in service. This IS due to a backward installation of the lockwashers, which are bellville type, and a resultant incorrect torque on the bolts.
The remedy
All recalled vehicles will have bellville type lockwashers at steering gear housing attach points replaced with standard split-type lockwashers.