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Kevin, two things.
1) Are you sure the drum is warped? Is it possible the backing plate may be out of alignment instead?
2) I doubt that pounding on a brake drum is a good idea. I think brake drums are cast iron, not steel, so are not malleable. Be careful before you do anything with the drum.
I'm almost positive the drum is warped and not the backing plate. I should put a straightedge on the backing plate to make sure. Looking in the drum you can see a wear pattern where the shoes hit only in certain spots. Also, when spinning the rear axle I can see the edge of the drum move in and out.
I believe the business part of the drum is cast iron, but is the part that connects to the hub also? My friend was saying sometimes those parts are steel, which would make it possible to bend it back.
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Kevin, while I agree that you might as well try to improve the drum (it's no good that warped), I'm not so sure "pounding" on it would be the right path, as Ozstatman mentions. Perhaps a better method to consider would be using a hydraulic press - somewhat "gentler" and easier to control.
I'm not sure what the guy has in mind for trying to repair it. But perhaps "pounding" wasn't quite the right term. Obviously there will be some sort of force to correct it....probably a press. He has all that stuff in his shop. The problem I see here is that according to the Parts List this drum is a ONE year ONE model only drum. I have no idea how similar other years and models are to this.
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Kevin; Have you removed the key and filed the edges of the key slot to remove any rough spots and tried the drum on? Some times the key can cause your problem. If the drum was that bad your old shoes would have been destroyed. Also double check the backing plate surface to housing surface. keep up the great work. Dell
Are you saying that roughness in the key slot might keep the drum from fully seating, or that it might cock it sideways? And are you saying to smooth the key slot in the axle or in the drum?
The old shoes weren't great....a lot of uneven wear. Very thin in the center and thicker on the ends.
I'm pretty sure the backing plate to housing is good....everything was cleaned to bare metal and reassembled so there shouldn't be anything interfering.
-Kevin
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