1974 SUPERIOR RD500 Recalls (2)

Campaign:: 74V134000 on 10/11/1979
Component:: Wheels:lugs/nuts/bolts
Affected:: 19
Notes:: Superior trailer work campaign no n/a.trailer.possibility that the backnuts that attach the wheel studs to the brake drum-hub assembly may beinproperly installed.the back nuts are of a self locking type having sixradial slots extending approximately one half the depth of the nut.ifimproperly installed the slotted end will bear against the inside of the brakedrum, and if an excessive tightening torque were applied, the nut could spreadopen and break loose from the stud.(correct by inspecting and replacing withnew nuts installed properly).
Campaign:: 74V201000 on 10/11/1979
Component:: Wheels
Affected:: 7
Notes:: Superior campaign no not available.trailer.mfg'd march 29, 1973 to oct.25, 1974.possibility that wheels were machined in a convex out-of-flatcondition on the inside mounting surface.if this condition exists, it mayincrease the assembly stress on the hub to an undesirable limit, resulting in apremature failure of the hub.(correct by inspecting and replacing withproperly machined wheels).