Community Forums:

Hi,

It’s is most likely to be the carbon brushes are getting to short, for the springs that hold them in place, to keep enough pressure on them at high engine speeds.
That much wear usually leaves a lot of carbon dust in the wrong places and they become sticky.

Also another phenomenon that occurs due to worn brushes is that the slip rings, that the brushes run on, go slightly out of round and this can cause the brushes to bounce a little bit.

When the brushes lose proper and continuous contact current output varies even at low speeds so basically you are headed for more trouble if you do not service the alternator soon.

During a night time trip your lights headlights might occasionally flicker upon startup.
It’s an old white man trick borrowed from the red man, that to use smoke signals, to tell the white man that his worse troubles were on the horizon!

(:-)
Phil