Jump to content

Onan Generator Brush Wear


Recommended Posts

Decided to check the alternator brush wear on our 12.5kW HDKCB today.. service manual says if you can stick 1" of wire in into the hole, it's time for replacement. I can stick 1.4" in 😑

Guess it's (past) time to replace. Our genset has 4,200 hours on it. I haven't been able to find a lot of info out there about the brush service life, but based on my experience, I'd say it's less than that.

I'll post up if there's anything weird about replacing it.. looks straightforward enough.

Link to comment
Share on other sites

I replaced ours at 3500 hrs. Also the bearing and slip rings because they had some good grooves. It was about time for the bearing, it was pretty dry. Not hard to do if you have an access. Ours did not an I had to take the cover apart. Quite a few things to do per maintenance schedule. Now I have it all apart again, waiting for a stator.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Create New...