300w Charging Set Problems

[James D Teel II]

Chris. The cover is off. What I’ve found is that I have only 1/2 contact on two brushes (I can see light between half of the brush and the commutator), and full contact on the other two. It must just be a coincidence that it measured 6 ohms in total. They’re worn enough that I can’t coax the two into making full contact. Now, I’m searching for either NOS brushes, or a suitable modern substitute that measures out. Yes. I should have replaced them when I originally had it apart. They’re held in place by what appears to be a bent wire affair that looks like a set of staples. It seems that to take them out, I must straighten the wire, pull the brushes, replace them, and then bend the “staples” back into place. I’ve replaced more than a few brushes and this appears to be the most complicated. I’m looking for part number 54-102. Ideally, I’d like to find a set of four and a few spares.

Charlie. I seem to recall I have tried to start the set with the rheostat in the full off position, as is indicated in my manual, and in the full on position, but I’m not 100% certain I’ve tried it in the full on position. Also, why would I apply 24v to a 12v genset? Please advise what you’re thinking. Thanks much.

[charlie fitton]

Firstly, I'm thinking that there may be dead spots in the rheostat, and secondly - 24 v is not going to ham this, if the cranking speed jumps remarkably, it may tell you more about what's going on.


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[James D Teel II]

Im tracking with what you’re thinking. Thanks for breaking it down.