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Onan Generators Restoring, operating and maintaining vintage Onan generators.

Onan Generators

Onan JC Distributors


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  #11  
Old 09-09-2017, 10:02:11 AM
nothingbutdarts nothingbutdarts is offline
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Default Re: Onan JC Distributors

For right now I switched to PB Blaster and heat.
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  #12  
Old 09-09-2017, 10:02:54 PM
dracer dracer is offline
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Default Re: Onan JC Distributors

you can make the best penetrating there is by mixing automatic transmission fluid and acetone in 50-50 mix
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  #13  
Old 09-09-2017, 10:44:50 PM
nothingbutdarts nothingbutdarts is offline
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Default Re: Onan JC Distributors

Another question for the smart guys: In the parts book there are two different part numbers for a JC distributor, one number for a pressure cooled and another number for a Vac U Flow, what's up with that??? In the same parts book it the internal break down of the dist., all the parts are the same part numbers, however, for the bare housing there is no part number for either.
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  #14  
Old 09-09-2017, 10:47:32 PM
Wayne 440 Wayne 440 is offline
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Default Re: Onan JC Distributors

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Originally Posted by dracer View Post
you can make the best penetrating there is by mixing automatic transmission fluid and acetone in 50-50 mix
+1 for the above. Another underappreciated benefit of that mixture is that it works well to set the item on fire with if you get tired of working on it.
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  #15  
Old 09-11-2017, 12:11:26 PM
grif grif is offline
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Default Re: Onan JC Distributors

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Originally Posted by Wayne 440 View Post
+1 for the above. Another underappreciated benefit of that mixture is that it works well to set the item on fire with if you get tired of working on it.
A nice write up in Home Shop Machinist a few years ago about that mix. Something to be said for long soaks.

If you use dry ice,,, be careful. Makes things brittle at that temp.
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  #16  
Old 10-28-2017, 01:34:59 PM
nothingbutdarts nothingbutdarts is offline
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Default Re: Onan JC Distributors

Well, after about 3 weeks of soaking the main shaft and advance mechanism in the 50/50 mix (which is mighty hard to keep mixed together mine you, it seperates quite easily, ATF and acetone) I tried turning the adv. mechanism again no go, light heat, still no go. Well I gave in and got the real torch out, a bit more heat on the advance mechanism and finally got it to turn, more and more, finally got it off the main shaft. I hope I haven't hurt the points cam area of the advance mechanism any. I put it in oil after getting it loose to try and quench it.
I'm thinking of a Pertronix pick-up in it anyway!
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