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Old 09-02-2011, 07:35 AM   #15
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The regulator (governor) on my QD7500 is a $490 part from Cummins, but it's an electronic module and there is no doubt when it fails. Looks like it can be had for around $200 on ebay, which would be fairly typical of the difference between a factory price and aftermarket.

Gary Brinck
2004 American Tradition; 2014 Buick LaCRosse
Homebase in the Ocala Nat'l Forest near Ocala, FL
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Old 09-02-2011, 10:03 AM   #16
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Originally Posted by Billieg View Post
I'm sure this has been covered before but maybe some new members haven't seen it yet. My Onan gen. with 500 hr's on it quit while on our last trip. Had to wait 2 weeks to get an appointment with Cummins to fix it. The head guy came out after they checked it out and said it would be $760 to fix it.

I asked what was wrong with it and he said the regulator was shot. A new regulator was $490. I've been a backyard mechanic all my life and never heard of a regulator costing $490. I told him to fix it because I had no choice being on the road.

The MH was parked outside so I walked up to the mechanic and asked why it quit. He told me "You never cleaned the stator" I didn't know you had to clean the stator so he showed me how to do it. Pretty simple.

When I paid the bill I made sure to have the regulator part # on the bill and later looked up the regulator on Ebay. $46.00! Not $490.00!

I was also told the fuel pump was weak and it would cost $280 to replace it but I said no. The fuel pump on Ebay was $79.00

So, lesson learned:

1- Have the gen serviced every 100 hrs. and or clean the stator yourself.

2- Buy a backup regulator and fuel pump (on line like Ebay) in case yours quits. (almost any garage can replace them if you have your manual)

3- Always keep an extra fuel filter and fuel line too. My "weak" fuel pump was just a bad end on the rubber fuel line and was sucking air.

Hope this helps someone so they don't get raped like I did....
I can't thank you enough for this information. I will be sure to check these items, pronto.

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