My son's rear axle bolts tend to slowly loosen up.
I put on lock washers and that has greatly reduced
the problem but not eliminated it. Bolts are torqued
to 90 Ft Lb.
My thought is that over time with the rear drums being
R & R'd that the threads on those bolts are worn. Being
bolt thread to hub thread friction is what keeps the
bolts from loosening up that it is possible the
threads on the original bolts are worn so they do not
stay tight.
Solution then would be to install new axel flange
bolts.
Everyones thoughts about my theory. Jeffrey
