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Quick help with Onan 12.5


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  #21  
Old 03-11-2017, 02:46:43 PM
Handyhiker1 Handyhiker1 is offline
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Default Re: Quick help with onan 12.5

A few more. I have $175 for it and got it delivered. I think I did okay. :-)
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  #22  
Old 03-11-2017, 03:06:53 PM
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Default Re: Quick help with onan 12.5

You paid $175.00 and it was delivered???? Lucky Bugger you are!!!!!


Nice mouse condo! It will be a great set!
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  #23  
Old 03-11-2017, 05:26:16 PM
Jim Marcozzi Jim Marcozzi is offline
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Default Re: Quick help with onan 12.5

A few little squirts of expandable fire foam will fix the JC mouse problem.
Mice love to eat the regular expandable foam, but for some reason, they don;t like the orange fire rated foam. And as a bonus, the fire foam stays a little pliable once set up.
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  #24  
Old 03-11-2017, 05:37:24 PM
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Default Re: Quick help with onan 12.5

Looks like someones car seat will be short a little padding! Nice score. Can't go wrong for that price unless the WHOLE set is a "Boat Anchor".
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  #25  
Old 03-11-2017, 06:59:24 PM
Kevin K Kevin K is offline
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Default Re: Quick help with onan 12.5

Quote:
Originally Posted by Jim Marcozzi View Post
A few little squirts of expandable fire foam will fix the JC mouse problem.
Mice love to eat the regular expandable foam, but for some reason, they don;t like the orange fire rated foam. And as a bonus, the fire foam stays a little pliable once set up.
Thanks! I didn't know fire rated expandable foam existed. It's a bit pricey, about double the cost of standard foam, but if it acts as a mouse barrier, well worth the cost.
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  #26  
Old 03-12-2017, 08:23:42 AM
Handyhiker1 Handyhiker1 is offline
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Default Re: Quick help with onan 12.5

Can someone please tell me the weight of this unit? I looked in the manuals but didn't see it listed.
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  #27  
Old 03-12-2017, 08:43:33 AM
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Default Re: Quick help with onan 12.5

The sales literature lists an approximate weight of 655 Lbs for a 12.5JC.
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Old 03-12-2017, 04:11:52 PM
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Default Re: Quick help with onan 12.5

I have been through this from one end to the other. Looks good. Pulled all the plugs and cleaned them, cleaned and checked the points, straightened out some bent shrouds and cleaned out the mouse nest. Working on the carb now. I might get a chance to try to fire it up yet today. :-)
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  #29  
Old 03-12-2017, 06:00:26 PM
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Talking Re: Quick help with onan 12.5

It runs!! I still have a few problems to work out but it fires an runs. Don't know about producing power yet because I couldn't let it run long enough to get my meter.
First problem, the oil filter housing is dented and leaks oil when the engine built pressure. This is a canister filter, are these housings easy to find?
Second problem, one of the throttle links is broken. I know I can get this locally.
Third problem, the fuel pump would not catch prime. I may need to pressure feed the fuel with an electrical pump till it gets the diaphragm wet.
There is no exhaust so it was loud but all 4 cylinders did fire.

Other then these issues, I am so happy with the progress I made today and with the outcome of it all.
As soon as I can find the filter housing I will get a new filter and change the oil now that I know it runs. The oil really doesn't look bad just slightly dark. Must have been changed not too many running hours ago. Oh, I need an air filter too.

I took a picture of some kind of coil in the power conection box. It has two small wires run to it, my guess is 12v. Any idea what this is?
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  #30  
Old 03-12-2017, 06:18:05 PM
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Default Re: Quick help with onan 12.5

That is a current transformer to show voltage or amperage
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Old 03-12-2017, 06:20:02 PM
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Default Re: Quick help with onan 12.5

The coil in the box is the CT (current transformer) coil for your amp meter.

Glad to hear it runs, that is always a relief to know you have not bought a boat anchor.

Be sure the diaphragm on the fuel pump is not leaking into the crank case.

No idea on the filter canister, I have not had one that did not have a spin on filter yet.
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  #32  
Old 03-12-2017, 06:24:46 PM
Dale Russell Dale Russell is offline
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Default Re: Quick help with onan 12.5

Maybe you can find an adapter for a Spin on filter. Just a thought!
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Old 03-12-2017, 06:37:55 PM
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Default Re: Quick help with Onan 12.5

post what you are looking for in the parting out thread here:

https://www.smokstak.com/forum/showthread.php?t=99191
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  #34  
Old 03-12-2017, 07:35:59 PM
Handyhiker1 Handyhiker1 is offline
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Default Re: Quick help with Onan 12.5

I don't think the current transformer is factory onan. The wires to it run through a hole tears the back and have was been cut. Must have been for a remote read meter.
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  #35  
Old 03-12-2017, 10:33:55 PM
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Default Re: Quick help with Onan 12.5

I would think that you could convert the oil filter to spin on fairly easily. The cartridge oil filter must have been a less common option as I have never seen one. Put up some pics so we can see what the base looks like. I think you won on this set. Cheers Dan
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Old 03-12-2017, 11:46:56 PM
Vanman Vanman is offline
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Default Re: Quick help with Onan 12.5

Quote:
Originally Posted by Handyhiker1 View Post
I don't think the current transformer is factory onan. The wires to it run through a hole tears the back and have was been cut. Must have been for a remote read meter.
Just make sure that the CT is either connected to an ammeter or shorted before you apply a load to the conductor that passes through it.
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  #37  
Old 03-13-2017, 05:06:23 AM
Handyhiker1 Handyhiker1 is offline
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Default Re: Quick help with Onan 12.5

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Just make sure that the CT is either connected to an ammeter or shorted before you apply a load to the conductor that passes through it.
I am actually thinking about just removing it. Since I don't know what kind of gauge went to it or even what brand, I don't think I need it taking up space and adding extra weight.
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  #38  
Old 03-13-2017, 12:26:00 PM
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Default Re: Quick help with Onan 12.5

Agreed that that is the best course of action if it will not be used for anything. Most ammeters are 5 amp to full scale, and the CT should be labeled as to its turns ratio. For future reference, or if you decided to sell it.
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  #39  
Old 03-13-2017, 07:31:33 PM
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Default Re: Quick help with Onan 12.5

Quote:
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For future reference, or if you decided to sell it.
If you want it, it is yours. Pm me and I will get it to you.

This uses the small oval paper or foam filter I guess. I looked in the manual but can't find a part number. Is there a cross for the factory air filter?
Thanks.
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  #40  
Old 03-14-2017, 05:30:22 AM
Handyhiker1 Handyhiker1 is offline
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Default Re: Quick help with Onan 12.5

I found the parts manual and figured out what air filter I need. This will help a lot.
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