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Quick help with Onan 12.5


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  #51  
Old 03-18-2017, 08:00:25 PM
Handyhiker1 Handyhiker1 is offline
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Default Re: Quick help with Onan 12.5

Here are a few pics of the exhaust pipe and muffler. There are 2 hangers welded to the back of the muffler and bolted to the engine. This thing is solid as a rock.
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  #52  
Old 03-18-2017, 08:40:32 PM
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Default Re: Quick help with Onan 12.5

Nice job on the muffler. Man.... That control box has seen its share of MOUSE PEE!!!
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  #53  
Old 03-18-2017, 08:49:23 PM
Handyhiker1 Handyhiker1 is offline
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Default Re: Quick help with Onan 12.5

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Originally Posted by Motorhead View Post
Nice job on the muffler. Man.... That control box has seen its share of MOUSE PEE!!!
I am figuring that is what caused the part to fail. Two of the brass screw heads actually broke apart when I tried to remove them. Never had that happen before.
I have looked in the manuals and on e bay but can't seem to find a part number for the relay that I need. Anyone know the number or where I can get one?
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  #54  
Old 03-18-2017, 09:58:27 PM
Max Thompson Max Thompson is offline
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Default Re: Quick help with Onan 12.5

That is the K-12 ignition / start disconnect relay and the problem you have is very common. A new OEM relay will probably cost $100 or more if you can find one. I have cleaned the contacts on a few and gotten them to work, yours looks to be pretty far gone.

I have been replacing them with plug in relays and bases from Allied Electronics for about $20 and a little time rewiring. https://www.smokstak.com/forum/showt...15080&page=145 see post 2886. I have posted a crude wiring diagram somewhere.

Before you remove your relay, draw a diagram of the relay and number each terminal. Then tag all wires with corresponding numbers as you take them off. This can save a lot of tracing later.

https://www.smokstak.com/forum/album...pictureid=9460

I put a copy of the diagram in am album so I do not have to look for it again. NOTE; the coil on that relay is 6-V. I do have a few used ones left from conversions, but I would go with the new style relays.

The allied part numbers are also there now, the list was a PDF I uploaded to the album instead of a picture so it is a little hard to read.

Last edited by Max Thompson; 03-18-2017 at 10:03:58 PM. Reason: added part #s
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  #55  
Old 03-19-2017, 09:21:27 AM
Handyhiker1 Handyhiker1 is offline
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Default Re: Quick help with Onan 12.5

I found a guy locally that has a few used ones. If the price is cheap enough, I may try one and see how it goes. If not I will definitely be doing the conversion to the new style.
Thanks for the info!!
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  #56  
Old 03-19-2017, 09:27:34 AM
JohnnyC JohnnyC is offline
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Default Re: Quick help with Onan 12.5

Whoever did the muffler / exhaust job did an excellent job as seen in your previous pictures.

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New Jersey
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  #57  
Old 03-19-2017, 11:42:57 AM
Handyhiker1 Handyhiker1 is offline
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Default Re: Quick help with Onan 12.5

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Originally Posted by Handyhiker1 View Post
I found a guy locally that has a few used ones. If the price is cheap enough, I may try one and see how it goes. If not I will definitely be doing the conversion to the new style.
Thanks for the info!!
The local guy wants $25 for the factory used part. I have seen a photo of it and the box it is in, looks really clean. What do you think?
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  #58  
Old 03-19-2017, 11:44:26 AM
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Default Re: Quick help with Onan 12.5

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Originally Posted by JohnnyC View Post
Whoever did the muffler / exhaust job did an excellent job as seen in your previous pictures.

JohnnyC
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This is a buddy of mine. He owns the local exhaust shop.
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  #59  
Old 03-19-2017, 12:08:45 PM
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Default Re: Quick help with Onan 12.5

Hand him a $20.00 and walk away with it!
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  #60  
Old 03-19-2017, 01:33:12 PM
Handyhiker1 Handyhiker1 is offline
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Default Re: Quick help with Onan 12.5

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Originally Posted by nothingbutdarts View Post
Hand him a $20.00 and walk away with it!
Kind of what I was thinking too. Thanks.

He won't drop the $5, going to tell him to keep it and do the new chanc over.
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