At 109K miles I had new shoes installed in the rear brakes of my 1989
Sable. The drums were turned on a brake lathe as part of the service.
Ever since the work was done, the rear brakes make a thumping noise
proportional to the speed of the car when braking heavily. The brake
shop looked at it and claims they can't find the problem.
Any one of these "ideas". Drums could be out of round. The return springs ( most
likely not changed, but should be at each brake job ) are week. The drums not
machined with the correct surface causing the lining to chatter. Cheap linings
Thanks for the suggestions.
This shop does a lot of brake work (Meineke), and the drums were
turned twice, so I think the machining and linings are OK. They didn't
change the springs, so I will try to get those replaced. If the
springs don't do the trick, should I then get new drums? I'm not sure
what the best sequence of parts replacement should be.
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