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Onan Generators

What Have You Done to Your Onan Generator Today?


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  #3001  
Old 03-17-2017, 10:58:33 PM
nothingbutdarts nothingbutdarts is offline
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Default Re: What Have You Done to Your Onan Generator Today?

I like oldstuff

{Originally Posted by Max Thompson
Not another word about me sitting on the floor beside the JC for hours at a time.}

Beautiful!



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Originally Posted by Wayne 440 View Post
And at that moment the temperature in a substantial portion of Missouri dropped considerably...

You guys are funny!
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  #3002  
Old 03-18-2017, 06:41:31 AM
I like oldstuff I like oldstuff is offline
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Default Re: What Have You Done to Your Onan Generator Today?

^But you know Max will pay for that out maneuvering down the road. Women keep score, guys just want them to go away and be left alone.
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  #3003  
Old 03-19-2017, 06:07:44 PM
yellowlister yellowlister is online now
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Default Re: What Have You Done to Your Onan Generator Today?

I picked this 1989 5.0 cck up for 200 bucks.. tri fuel.. from a big generator repair company that could not get it to start.. has a Ford start solenoid on it..

supposedly professionals.. but all there stuff was new and they rent them.. he has another cck in a in closure that has a dead cylinder and wants me to fix and has no idea what's causing low compression..
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  #3004  
Old 03-19-2017, 06:46:28 PM
yellowlister yellowlister is online now
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Default Re: What Have You Done to Your Onan Generator Today?

Looks like it's never ran on gasoline before..
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  #3005  
Old 03-19-2017, 10:30:06 PM
nothingbutdarts nothingbutdarts is offline
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Default Re: What Have You Done to Your Onan Generator Today?

Man Joe, you are DA MAN!!!! Nice score!
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  #3006  
Old 03-19-2017, 10:45:28 PM
JohnnyC JohnnyC is offline
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Default Re: What Have You Done to Your Onan Generator Today?

Your like a blood hound trained to sniff out Onans. Nice catch, as always! 5.0 CCKs are nice heavy iron gennys as you know. What does this make for the month of March? Do you ever run out of room over there?

JohnnyC
New Jersey
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  #3007  
Old 03-20-2017, 05:28:46 AM
squidtrap squidtrap is offline
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Default Re: What Have You Done to Your Onan Generator Today?

That NH is still for sale by me that i looked at for JohnnyC, 300.00 but will take 200.00 cash.

If add states that 100.00 w/take it. real tempting, prob just the norm tune up and off it goes. 3 min. from house
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  #3008  
Old 03-20-2017, 08:47:10 AM
TLB01 TLB01 is offline
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Default Re: What Have You Done to Your Onan Generator Today?

Got the MDKC offloaded since the rain finally took a time out. A 30+ year old machine only gets 286 hours on it by doing a BUNCH of sitting around, and sure enough....the coolant had partially evaporated with only the block actually filled still with good green coolant. Even then, the outlet to the pump was all gooped up. The water pump was full of gelatinous slime and the water neck as well as the manifold tank were full of coolant crystals. The lid on the tank and the thermostat crumbled once disturbed from their 30 year nap. The water neck and the pump were trashed.

I took the cheesy plastic intake resonator off, since it was only held on with one bolt and also took off the marine exhaust manifold as well as the heat exchanger.

So, the shopping list (other than muffler, battery and radiator set up) grows to water pump, thermostat housing, exhaust manifold, Donaldson or other suitable air cleaner and fuel solenoid relay.

The raw water pump is still mounted as well. The flange on it is 1/4" thick or so and either requires a beefy aluminum block off or some purpose made item from Kubota. Either way, the fuel solenoid will need adjustment. Not sure if I want to get into that just yet, or ever. Unless the raw water pump is water lubricated/cooled, I just assume leave it unless anyone has better advice.
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  #3009  
Old 03-23-2017, 04:34:46 PM
Handyhiker1 Handyhiker1 is offline
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Default Re: What Have You Done to Your Onan Generator Today?

I loaded the 12.5jc that I pick up a few weeks ago. I could only load it with 22 amps but it did okay. The rpm did drop some so I went to adjust the carb and that is when I broke it. The main needle valve on the bottom of the float bowl broke. The little nut around it just fell apart from corrosion. So I will be looking for a main jet assembly and the run/stop solenoid. Oh well, at least it pulled some amps and still runs good.
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  #3010  
Old 03-26-2017, 01:11:54 PM
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Default Re: What Have You Done to Your Onan Generator Today?

nice day, decided to fire up the 5cck and look at the wave form.
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  #3011  
Old 03-26-2017, 01:13:07 PM
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Default Re: What Have You Done to Your Onan Generator Today?

pic number 2
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  #3012  
Old 03-26-2017, 01:53:24 PM
nothingbutdarts nothingbutdarts is offline
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Default Re: What Have You Done to Your Onan Generator Today?

Any loaded wave forms? Thanks!
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  #3013  
Old 03-26-2017, 02:05:55 PM
LRomero LRomero is offline
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Default Re: What Have You Done to Your Onan Generator Today?

So what's the difference between the Power Harmonics Analyzer meter and an Oscilloscope?
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  #3014  
Old 03-26-2017, 02:26:48 PM
len k len k is online now
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Default Re: What Have You Done to Your Onan Generator Today?

Oscilloscope shows you the actual waveform, good for seeing drop outs and spikes. Also in a rectifier circuit will show you a dead phase or diode.

Power Harmonics Analyzer meter....... does a FFT of the waveform and calculates all the intensity of harmonics components (120, 180, 240..... hz.) that are not present in a pure sine wave (60 hz). Then it sums them and presents them in one number, THD ( total harmonic distortion).
The pricier analyzers also give you numbers for the amount of individual harmonic components. Helps you guess where they are coming from.
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  #3015  
Old 03-26-2017, 05:14:07 PM
Handyhiker1 Handyhiker1 is offline
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Default Re: What Have You Done to Your Onan Generator Today?

Rewired my 5.0CCK vacuflo to diagram 611-1157. This unit never had a control box as the previous owner just had a few jumper wires on it and used a screw driver to jump the solenoid to start it. I was able to find the stuff from a fellow staker and finally got to hook it all up. I tried to follow the directions to do this but so much was gone and cut out that the directions were hard to follow. With some patience and looking at the wire diagram, I was able to figure it out and get it done. After the project, I hooked up a battery and fired it up. To my surprise all worked as it should. It even charges the 12v battery. This is a slow/low charge as even running for almost 30 minutes, my voltage reading was only 12.9 volts.
I did load test and pulled 4750 watts and the engine just purred along. I still need to adjust the choke as this is the first time since I had owned this set that it has actually been hooked up. I did get about 37 volts at the choke wire connection.
All in all, a good day and very happy it all works. Now to give her a good cleaning and I might even shoot a little paint at it.

I also listed my 5.0CCK contractor model for sale today so I can get funds together to continue on the 12.5JC. This one is going to take some to get it right, but I really like the way it runs and something about it just really grabs me.
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  #3016  
Old 03-27-2017, 06:37:49 PM
jwaktrader jwaktrader is offline
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Default Re: What Have You Done to Your Onan Generator Today?

Looking for control wiring diagram on a 3DJA-1E Onan generator. I have the original book but this is the contractors model and is not wired like the diagram and I'm not smart enough to figure out how this wiring is suppose to go. The little generator is ready to run if wired correctly.
Mod.3DJA-1E/2236/1C
s/n 54C765675
KW3
ACV 120 PH1
Amp 25 cy 60
Gen Data 3JA1C!A
1800 rpm Batt, 12
Thanks for any help.
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  #3017  
Old 03-27-2017, 06:59:59 PM
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BigBlockChev BigBlockChev is online now
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Default Re: What Have You Done to Your Onan Generator Today?

You can try the manual repository at http://www.twinslan.net/~n0nas/manuals/onan/
Looks like 967-0511 might help you but there are lots more as well. Generally the difference between the contractor model and the std version is that there are two high current pushbuttons on the front panel of the control box rather than 2 solenoids on the floor of the box and a couple of toggle switches on the front to operate them. Cheers Dan
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  #3018  
Old 03-27-2017, 09:12:50 PM
jwaktrader jwaktrader is offline
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Default Re: What Have You Done to Your Onan Generator Today?

Thanks for the quick feed back and I'll give it a shot, my kid called me and said he will be over tomorrow to give the old man a hand, he's an instrument tech. at least I raised him right. Thanks again.
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  #3019  
Old 03-27-2017, 09:20:37 PM
len k len k is online now
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Default Re: What Have You Done to Your Onan Generator Today?

When I don't know manual # when using that link I just press Ctrl-F to bring up a search box. Then just drop DJA in and let it search for everything with that in it.
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Old 03-28-2017, 01:32:54 AM
PnishrPW PnishrPW is offline
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Default Re: What Have You Done to Your Onan Generator Today?

Quote:
Originally Posted by len k View Post
Power Harmonics Analyzer meter....... does a FFT of the waveform and calculates all the intensity of harmonics components (120, 180, 240..... hz.) that are not present in a pure sine wave (60 hz). Then it sums them and presents them in one number, THD ( total harmonic distortion).
Thanks Len! I recently picked up a Fluke 39 (little brother to Scoops meter) and have been playing with it. Been curious about how it works. Haven't had chance to try it on my NH or CCK yet, but my 30 SK looks sweet on the screen! Here's a shot of harmonics on my utility power.
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