Onan Emerald 4000 bearing issue

If the ball bearing has broken then the generator rotor is most likely jammed against the rotor. Usually the support bracing for the rotor will be broken and this is really an ONAN technician type of job. It is usually fixable. See if you can find a level 3 tech as they are more experienced. If no ONAN trained tech, go someplace else. Check the yellow pages under "generators, electric" or call ONAN at the number in your owners manual.

JimL

I agree with Jim. Bearing drops and rotor can jam into stator. If you have the service manual and good with your hands. You could do the repairs yourself. But if you are not sure. Find someone that can.If you are close by. I would be willing to help you out.

903-536-2816

What's the full model number and I'll post service manual. Good to hear from you Jim how are you feeling ?

Yes, ALWAYS include both Model and Spec. All the letters and numbers is even better.

Those three replies above are three of the top RV genset gurus you'll find. Here and probably anywhere else.

Every one's been a help to me. You can take what they say to the BANK.

j-d wrote:
Yes, ALWAYS include both Model and Spec. All the letters and numbers is even better.

Those three replies above are three of the top RV genset gurus you'll find. Here and probably anywhere else.

Every one's been a help to me. You can take what they say to the BANK.

Thanks jd but its those other two guys that have the knowledge I just try to store manuals to help out as I have been helped.

Model number is 4BGEFA26100J. Thanks for everyone's input. This site is great!

stephensrm wrote:
Model number is 4BGEFA26100J. Thanks for everyone's input. This site is great!

The service manual is at:
http://www.cumminsonan.com/www/pdf/manuals/965-0528.pdf
There's an Allen wrench/hex driver at the end of the rotor shaft that will let you turn the rotor. That sounds like the end you are referring to. It should turn freely. If it won't turn, the bearing could be bad and the rotor could have impacted the stator. If that happened, I'd be in the market for a new generator. I've seen BGEs go for $300 and that's much less than a rotor will cost you. If the rotor damaged the stator, it's not going to be worth it to repair. I bought a 6.5 KW NHD - which is very similar to the BGE for $100. I ended up doing a lot of work on it, but it's running now and the parts cost was very low, since I could repair the VR myself. I would not have bought one that had rotor or stator damage. That's about the worst thing that can happen to an Onan, and it's the one thing I check before buying one.

That said, bearings don't often go bad, and when they do, they usually don't take out the rotor or stator. You can measure the winding resistances and check to see if they've shorted to the case. The specs are in the manual. If they are good, perhaps all you need is a new bearing.

Good luck. If you need expert advice beyond what you get here and want to tackle it yourself, check the Onan forums at www.smokstak.com.

Thanks again!

Printed in U.S.A. 965??0231 1??98 (BGE Spec F??P) (BGEL Spec E)
Replaces 2??94 (BGE Spec F??K) (BGEL Spec E)
9650231 bge bgel service manual
If you want it PDF pm me your email.

I am one of the founders of the smokstak onan section.