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Onan Generators

Onan 6.3NHL-3CR Brought Home


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  #1  
Old 11-25-2016, 02:59:11 PM
ArodaPowerCo ArodaPowerCo is offline
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Default Onan 6.3NHL-3CR Brought Home

Found on C/L last week and carried it home today.

6.3NHL-3CR/16013P Serial A833649952

Runs good and puts out 120VAC. Looks pretty good to me, but there is an oil leak that drips slowly while it's running. Appears to be coming from either the oil filter adapter or front crank seal, but haven't taken the tin off to find out yet. Runs nice and smooth with no knocks or ticks. The fellow I purchased it from pulled it from an old RV that was being scrapped. There was an hour meter inside the RV but he didn't get that. Also came with a new in the box Impco "KB" regulator, and an aluminum, forklift style propane cylinder full of propane. I found the operator and parts manuals on the Twinslan site already, but was wondering what other info might be out there? In my searching there doesn't seem to be many 6.3NHL's mentioned on the net. Anything special about it?

Thanks in advance!
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  #2  
Old 11-25-2016, 03:03:13 PM
ArodaPowerCo ArodaPowerCo is offline
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Default Re: Onan 6.3NHL-3CR Brought Home

Pics of the oil leak. Wherever it's coming from, it's getting slung around by the flywheel. Leaning towards cranks seal...

Pics of inside the control box. Pretty clean.
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Old 11-25-2016, 03:26:35 PM
nothingbutdarts nothingbutdarts is offline
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Default Re: Onan 6.3NHL-3CR Brought Home

Factory derated 6.5NH because of it being propane fueled instead of gasoline.
It would be nice to see what a build sheet tells about it! Nice looking set!!!

The knowledgeable guys might be out for the holiday weekend but, most likely will post up on here this coming week.
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Old 11-25-2016, 06:16:05 PM
Kevin K Kevin K is offline
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Default Re: Onan 6.3NHL-3CR Brought Home

Nice looking set! One of these days I'll pick up an NH myself. I wouldn't be surprised it the oil leak was from the oil filter. So far, the leaks I found on the similar BGA and BFA's I own have all been from the oil filter.

Pick up the following manuals:

940-0125 Operator
940-0225 Parts
900-0196 Generator Service
T-015 Gaseous Fuels Manual

I don't see an engine service manual listed, but I would guess any of the other NH engine manuals would work.
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Old 11-25-2016, 06:43:07 PM
ArodaPowerCo ArodaPowerCo is offline
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Default Re: Onan 6.3NHL-3CR Brought Home

I pulled the tin off and it does appear that the leak is from the oil filter. Spun the filter off with very little effort and the gasket is hard as a rock. Looks like the vacuflow was sucking the dripping oil into the flywheel and flinging it everywhere.
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Old 11-25-2016, 06:46:04 PM
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Default Re: Onan 6.3NHL-3CR Brought Home

The oil leak is most likely from the adapter.Most of the time you can turn the mounting bolts in a little .Some times it needs a gasket change. Oil pressure switch could also be leaking.
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Old 11-25-2016, 07:11:54 PM
ArodaPowerCo ArodaPowerCo is offline
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Default Re: Onan 6.3NHL-3CR Brought Home

It did look a bit wet at the base of the adapter. Going to dig around and find my crowfoot to check the lower bolt. Looks like the only way in other than removing the flywheel.
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Old 09-11-2017, 10:48:18 PM
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Default Onan 6.3NHL-3CR "Hi-Water" Cart

Used the original sliding RV drawer pan as a base to build a cart. Got the stand made this weekend and the generator mounted today. Just need to add wheelbarrow handles and an underslung battery mount. This will live on the slab I poured last Friday behind the back deck connected to the 500 gallon LP tank. Between the cart and the slab, the genny will be about 4 feet off the ground, about 3 feet higher than the water got with hurricane Matthew. Not as nice as a JohnnyC rig, but I'll get it painted when it's complete.

Need to design a wasp and critter proof housing for it next.
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Old 09-12-2017, 12:33:50 AM
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Default Re: Onan 6.3NHL-3CR Brought Home

Make sure you can pick up liquid from your 500 gallon tank
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Old 09-12-2017, 06:55:33 AM
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Exclamation Re: Onan 6.3NHL-3CR "Hi-Water" Cart



https://www.smokstak.com/forum/attac...2&d=1505184219
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Old 09-12-2017, 08:14:07 AM
HBSaunders HBSaunders is offline
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Default Re: Onan 6.3NHL-3CR "Hi-Water" Cart

what did it wind up costing if I may be nosey, looking at a gasoline powered one not far from me, thanks
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Old 09-12-2017, 10:04:42 AM
armandh armandh is offline
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Default Re: Onan 6.3NHL-3CR Brought Home

easy to work on it cart !!!!

be careful
likely a bit top heavy

neat factory dual fuel
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Old 09-12-2017, 11:51:30 AM
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Default Re: Onan 6.3NHL-3CR Brought Home

Good looking genny, I had one in my last motor home, except mine was gasoline only, all I ever did to it was change oil & filter-es, in the ten or so years I had it. I have the newer BGM/Marquise series in my present MH, and wish it were the NH.
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Old 09-12-2017, 12:02:41 PM
ArodaPowerCo ArodaPowerCo is offline
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Default Re: Onan 6.3NHL-3CR Brought Home

I'm going to convert it to a vapor system by changing the plumbing on the inlet side of the regulator to a larger line. The propane hookup is a 1/2" ID line @ 10psi. I'll see how it behaves on that. If it doesn't play nice, then I have a "Cobra" regulator that will work with vapor which will bolt on in place of the Impco "J".

The cart is actually a lot more sturdy than I thought it would be. The steel tubing and angle iron I built it with is pretty thick, and I used 3/8" rebar posts for the cross supports. While I still had the generator slung from the engine crane, I tried shoving it around to see how solid it was and easy it would be to tip over. It's quite solid. Couldn't make it sway at all, and couldn't push it over. Obviously on uneven ground that will change a bit, but all I need it to do is roll up onto the concrete pad. It'll stay there unless it needs repair beyond what I can do "in place", or I move.

As to what it cost, I got the generator for $300. It had a couple issues to resolve, but the seller was able to demonstrate it running and producing power under load. The cart I built out of scrap steel tubing and angle iron. Heavy stuff that's overkill for what it's doing, but it was free. The wheels were free out of a scrap pile a friend had. I bought a couple 3/4" bolts to make the axle with (about $10 for grade 8). So far I'm well under $400.
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Old 09-12-2017, 02:25:16 PM
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Default Re: Onan 6.3NHL-3CR Brought Home

That looks like a walbro lua carb? any chance of a close up of where they are feeding the propane into the carb.

interested to see possibly could still use gasoline? but usually not. thanks Ed.
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Old 09-12-2017, 04:25:42 PM
ArodaPowerCo ArodaPowerCo is offline
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Default Re: Onan 6.3NHL-3CR Brought Home

Here you go. I don't think this carb can be used for gasoline. The propane is fed into the bottom of the bowl. Don't see any provision for a gasoline inlet. I think this is a dedicated propane unit. However, I'm not that familiar with these. Definitely a Walbro carb though. It kind of reminds me of the carbs used on some of the older Briggs opposed twins.
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Old 09-12-2017, 07:12:42 PM
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Default Re: Onan 6.3NHL-3CR Brought Home

Thanks, looks like its fed where the gasoline line would go, to the left would be the power jet. Looks plugged. Possibly could rig a T there w/shutoff.

Most likely no internals, will stick with my spud, thanks again.
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