Onan diesel help in Bowling Green

Mike Graham · 05-19-2018, 11:22 AM

Our onan 12k diesel has decided to surge rpm. It changes rpm enough that the output voltage varies about 8 volts. Any suggestions of what to look for or someone in Bowling Green area that can work on it?

Speer Drag Racing · 05-24-2018, 03:20 PM

We had this same problem. Ours ended up being a bad bearing on the shaft of the rotor which was wearing on the stator. Had to replace both rotor and stator. Not saying this is your problem but this is what we found. Any luck on getting it fixed?

05-19-2018, 11:22 AM	#1
Mike Graham Member Join Date: Jul 2002 Posts: 398 Likes: 1 Liked 313 Times in 61 Posts	Onan diesel help in Bowling Green Our onan 12k diesel has decided to surge rpm. It changes rpm enough that the output voltage varies about 8 volts. Any suggestions of what to look for or someone in Bowling Green area that can work on it?

05-24-2018, 03:20 PM	#2
Speer Drag Racing Junior Member Join Date: Jan 2007 Location: Minnesota Posts: 47 Likes: 6 Liked 49 Times in 9 Posts	Re: Onan diesel help in Bowling Green We had this same problem. Ours ended up being a bad bearing on the shaft of the rotor which was wearing on the stator. Had to replace both rotor and stator. Not saying this is your problem but this is what we found. Any luck on getting it fixed?