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Onan 15.0 Build Sheet off Serial #


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  #1  
Old 11-11-2017, 07:25:34 PM
nothingbutdarts nothingbutdarts is offline
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Default Onan 15.0 Build Sheet off Serial #

I was hoping someone could post a build sheet for this 12 wire 15.0RJC. I can not find the data tag anywhere on it. Any ideas where to look for the ID tag on a RJC?? Block # 306710

$160.00 and $30.00 in gas, I can turn the flywheel. The seller said the dist. quit turning, he said the gear that drives the dist. is not turning. It's been sitting for about 6 years he said.
I couldn't pass it up, Tri-fuel carb., newer starter, demand regulator with shut off solenoid. A beautifull drive pretty much all in the mountains it was!!

Thanks!
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Last edited by nothingbutdarts; 11-11-2017 at 07:31:22 PM. Reason: added info.
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  #2  
Old 11-11-2017, 07:30:38 PM
nothingbutdarts nothingbutdarts is offline
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Default Re: 15.0 Built sheet off serial #

A few more pictures.

The guy also has a Kohler and an Onan 12 RS both in need of repair. The RS he said started making a knocking noise.


https://cosprings.craigslist.org/for...321873785.html
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Old 11-11-2017, 07:46:19 PM
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Default Re: 15.0 Built sheet off serial #

Nice score!
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Old 11-12-2017, 01:08:41 AM
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Default Re: Onan 15.0 Built sheet off serial #

The tag on one like that are usually on The control box.. could possibly be inside?

Good deal! Hopefully the gear drive for the distributor is not ground up..
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Old 11-12-2017, 01:18:59 AM
nothingbutdarts nothingbutdarts is offline
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Default Re: Onan 15.0 Built sheet off serial #

Joe,

Have you ever seen a bad camshaft on a JC?

Is Florida agreeing with you?
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Old 11-12-2017, 12:49:45 PM
Max Thompson Max Thompson is offline
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Default Re: Onan 15.0 Built sheet off serial #

Yea, "Nice Score".

I have not found a data tag "inside" the control box yet, usually they are inside door on a housed set, but outside on the rest.

I have not seen a muffler set up like that until now, interesting set up.
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Old 11-12-2017, 02:53:56 PM
EnginePat EnginePat is offline
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Default Re: Onan 15.0 Built sheet off serial #

Could the pin on the distributor be broken?
Really nice score!
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Old 11-12-2017, 03:11:43 PM
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Default Re: Onan 15.0 Built sheet off serial #

Quote:
Originally Posted by nothingbutdarts View Post
Joe,

Have you ever seen a bad camshaft on a JC?

Is Florida agreeing with you?
Nope... first time for everything tho.. I think I scraped one when I moved to..

Flordia is cool.. but alot of people have keys disease when it comes to getting stuff done.. unless you wave a 100 bill at them
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Old 11-13-2017, 05:09:31 PM
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Default Re: Onan 15.0 Built sheet off serial #

Came up with 15.0 RJC-18R/30436C shipped Oct. 1990
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Old 11-13-2017, 05:12:49 PM
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Default Re: Onan 15.0 Built sheet off serial #

Quote:
Originally Posted by OnanParts View Post
Came up with 15.0 RJC-18R/30436C shipped Oct. 1990
OnanParts, Thank You!

Might I be able to get a copy of the build sheet though?? I'm really trying to find of it full output in single phase.
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Old 11-13-2017, 07:06:04 PM
Max Thompson Max Thompson is offline
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Default Re: Onan 15.0 Built sheet off serial #

The build sheet says spec. AC, but I think this is the right one.

Yes, B150 option is listed.
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Old 11-13-2017, 08:13:41 PM
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Default Re: Onan 15.0 Built sheet off serial #

Thanks Max and OnanParts!!

The B150 makes sence, I measured stack lenght on a 3 phase 15.0 JC and it was 5 1/4", the stack length on this 15.0 RJC measures 16" so a B150 full output it is.

I also pulled the dist. today after getting it unloaded and i it's resting place for now, turning the flywheel I can see the crank turning but, the camshaft is not si sometime next year when I get room made in the garage, I will tear the engine down to see what the failure is.
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Old 11-13-2017, 08:15:38 PM
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Default Re: Onan 15.0 Built sheet off serial #

Did you hear any grinding noise or feel hesitation while turning it? With the plugs out
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Old 11-13-2017, 10:31:14 PM
nothingbutdarts nothingbutdarts is offline
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Default Re: Onan 15.0 Built sheet off serial #

Joe, I only turned it a few teeth on the flywheel and felt the cam not move then stopped.
Why do you ask???
I did notice the governor was not holding the throttle full open, maybe something in the front gear cover came apart. It will be very interesting to see what happened. The guy did say a place in Colorado Springs had rebuilt the engine and he only got about 50 hours out of it before this happened. I never thought to ask hime if he ever tried to get warranty out of it. Since it's been sitting like 6 years it really doesn't matter.
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Old 11-22-2017, 12:13:05 AM
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Default Re: Onan 15.0 Built sheet off serial #

Might someone be able to put up a wiring diaghram for this unit?

I believe it's 612-5485-02 also diaghram 612-5818-01

Thank You!
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Old 11-22-2017, 12:42:14 AM
MBB MBB is offline
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Default Re: Onan 15.0 Built sheet off serial #

Here you go Darts.
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Old 11-22-2017, 12:51:49 AM
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Default Re: Onan 15.0 Built sheet off serial #

MBB,

Do you happen to have to other diaghram as well, 612-5818?


Thank You for the other one!!!
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