I was sent an armature to repair some wires that got scraped away. I've never seen this happen before and wonder just what rubbed so long that it wore away some of the wires leading to the commutator. It must have been the field wire or power brush to stud wire. I had to splice in some short lengths of solid copper wire after I scraped away the lacquer coating. I also had to turn the damaged taper where someone had pressed or hammered against the front end. With the damage the pulley wouldn't mount correctly. A longer bolt should always be run to the bottom of the threads to press against, or tap with a hammer.
After the wire repairs I tested it on my growler, and once it passed that test I polished the commutator, repaired the taper, then sprayed the front end with clear shellac, and used Loctite slow set clear epoxy to hold the commutator wires in place. It should be set up enough by tomorrow to mail it back to the owner.
After the wire repairs I tested it on my growler, and once it passed that test I polished the commutator, repaired the taper, then sprayed the front end with clear shellac, and used Loctite slow set clear epoxy to hold the commutator wires in place. It should be set up enough by tomorrow to mail it back to the owner.
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