Magneto Rebuild

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Magneto Rebuild

Postby Donny M » Sat Feb 07, 2004 8:08 pm

I'm rebuilding several magnetos. Here's the first. :D :D

The mag before:

Image

And After:

Image



The parts are a little pricey but I like the mags better. Nice blue fire to a plug is always a good thing.
The best thing to rebuild these things is the TC-37F Parts manual. The Blue ribbon Service manual GSS-1012 was not much help for rebuilding.
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Postby Rudi » Sun Feb 08, 2004 9:00 am

Donny:

Can you document the process step by step with pics and narrative :?: That would be a really valuable article :idea: :!:

Nice looking mag btw! Nice Job :!:
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Postby John *.?-!.* cub owner » Sun Feb 08, 2004 10:25 am

That looks too good to put on a tractor. At least on one of mine anyway.
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Postby parts man » Sun Feb 08, 2004 2:16 pm

Donny, great job on the mag!!! That's got quite a shine to it,, what did you use to polish it up?
Did you glass bead blast it?
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Postby Bigdog » Sun Feb 08, 2004 2:21 pm

Great looking job Donny! I have one of those down in the barn that could use the same treatment. I guess I'll have to get on it one of these days.
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Postby Donny M » Sun Feb 08, 2004 3:34 pm

Rudi,
I will get good documentation on the next one. May be a few weeks or so.

The mag may look good on the outside but it's what's inside that counts :!: I'll try to post a picture of what was inside (rust).
The rotor was a nice color (colour for Rudi :lol: :lol: ) red rust. The coupling spring was in 2 pieces, the coil was open and the contacts on the points looked like the surface of Mars. The rotor retainer was in good shape though. :lol: :lol: :lol:

To clean up the body I used a fine brass (I know brass is yellow but doesn't show up) wire brush. I wish I would have had some glass beads or some walnut shell. Would have been a lot easier. I used the brass brush because I've seen deposits of steel impregnated into aluminium which after some time had turned to rust. Just a precaution. :roll: :roll:
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