Onan info

[Rich Biebel]

Bad contact between the brushes and slip rings is one of the biggest things that can cause an issue like you have Jeff. If the brush does not contact the slip ring it will arc for a while and the arcing damages the surface of the copper......Clean it with some shop roll paper untill it is as clean as you can get it.

I have been working on a Miller 300 D Trailblazer-Diesel welder. Already have hours and hours in it, changed the rotor and PC control board.....and the board was already replaced once 6 months ago.....Weld output is intermittent at best.......I spent a good part of today trying to nail down the problem and find nothing that is clearly wrong.....but it doesn't work and I already have a pile of money in parts in it and a pile of time.....

Working with machines that produce electricity can be very very difficult....even for people that do it all the time like myself....

Hopefully you found your problem.....