Onan problem-help, please.

[richard guthart]

While we were camping over the weekend, my Onan suddenly stopped producing an AC
voltage, just as I turned on the roof AC. The genset's engine continued to run
normally but the AC output went dead. The problem is not with the circuit
breaker in the J-box, nor the circuit breaker at the genset. There simply is no
output at the genset.

Anyone know what the most likely problem is?

This is a '77 Model 4.0 with only 235 hours on it. No prior problems.

Richard

 

[rob teed]

Probably the Bridge Rectifer in the generator. About a $10.00
part if you look around. Someone here will give you the
part number. Your supposed to remove the genset to replace
the part.
Good Luck,
Rob Teed 74 Painted Desert

> -----Original Message-----
> From: owner-gmcmotorhome
> [mailtowner-gmcmotorhome]On Behalf Of Richard Guthart
> Sent: Monday, June 21, 1999 10:05 PM
> To: gmcmotorhome
> Subject: GMC: Onan problem-help, please.
>
>
> While we were camping over the weekend, my Onan suddenly stopped
> producing an AC
> voltage, just as I turned on the roof AC. The genset's engine
> continued to run
> normally but the AC output went dead. The problem is not with the circuit
> breaker in the J-box, nor the circuit breaker at the genset.
> There simply is no
> output at the genset.
>
> Anyone know what the most likely problem is?
>
> This is a '77 Model 4.0 with only 235 hours on it. No prior problems.
>
> Richard
>
>
>
>
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[richard guthart]

Thanks Duane, Lanier and Rob.

Doesn't sound as bad as I was fearing. I'll try it today.

Richard

 

[richard guthart]

I want to report back that the bridge rectifier was indeed the problem, and your
tips for replacing it allowed me to do it myself. I can't imagine why the
recommended procedure is to remove the genset in order to access the rectifier
but glad I didn't have to pay an Onan tech to remove and replace mine!

Richard