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Old 05-28-2021, 07:02 PM   #11
nkaminar
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Join Date: Jan 2012
Location: Western North Carolina
Posts: 3,903
Default Re: Starting issues when warm

It is not hard to rebuild the starter. Mostly it is cleaning it up and replacing the brushes. You will have to clean the commutator. Start by using a solvent like WD-40 and a rag. If not smooth you can use a file while spinning the armature in a lathe or use a cutting bit in the lathe. I have used fine grit sand paper to clean them up by hand. No need to clean out the grooves in the commutator on a starter. You will need a good soldering iron to change the brushes that go to the field windings. You may have to replace the insulators here and there. Use an ohm meter to check things out and search for ground faults. There are books on how to rebuild starters and I would recommend getting one. The MODEL A MECHANICS HANDBOOK VOLUME 1 has a good section on how to rebuild a starter. It is $36 but you will find that you will use it for all the work you do on your car.
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