6 volt Generator brushes squeal like a pig!

[gingerkid]

Originally Posted by hueyhoolihan

curious as to why the brushes have been targeted as the source of the noise, as they've been replaced and the armature cleaned, etc. AFAIK, they may cause some noise, but rarely squealing.

IME, it's always been the generator's bearings or bushings that squeal (the generator may have a couple of oiling ports, BTW), or perhaps the belt or any other device connected to it. good luck!

hueyhoolihan in trying to find the squeal while it was running i touched each brush pulled them off the commutator it immediately stops squealing i had originally thought it was bearings and bushings it obviously wasn't.

[hueyhoolihan]

Originally Posted by gingerkid

hueyhoolihan in trying to find the squeal while it was running i touched each brush pulled them off the commutator it immediately stops squealing i had originally thought it was bearings and bushings it obviously wasn't.

understood...

i might suspect that a brush spring or two was too tight or too loose. IIRC, forces generated on the brushes of a generator can be easily adjusted to exert whatever force is necessary. might try adjusting a spring or two. and if that fails i might remove each brush, in turn, to isolate which brush or brushes are making the noise. and if THAT fails i might think about finding another source for some brushes.

after all...with the quality of aftermarket parts these days being what they are....