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Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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| | | | Joined: Sep 2001 Posts: 29,270 Bubba - Curmudgeon | | Bubba - Curmudgeon Joined: Sep 2001 Posts: 29,270 |
Lone Wolf,
Excellent pictures (an understatement).
1. Someone else will give advice on cleaning the inside (I am not going to post what I do - too embarrassing).
2. The copper-end has mica (I think) as insulation between the copper commutators (I think that is what they are called). The copper is softer than the mica. The mica will wear out the graphite brushes. A good repair/rebuild shop will turn/smooth that copper end and then cut the mica down below the surface of the copper.
3. I am pretty sure that hole is natural - for debris/water/oil drainage/escape (others will correct this).
4. That step is contact-wear. It would be nice to replace this part (but, the much easier shade-tree approach would be to loosen it and turn it 180 degrees (gasp).
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