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Onan Generators Restoring, operating and maintaining vintage Onan generators.

Onan Generators

What Have You Done to Your Onan Generator Today?


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  #3491  
Old 11-11-2017, 09:50:27 PM
JohnnyC JohnnyC is offline
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Default Re: What Have You Done to Your Onan Generator Today?

This afternoon my 7.5 JB, 6.5 NH, and 4.0 BFA had a THREESOME Yes, together - I ran them for their load exercise (see pictures below). I did all three together to save time otherwise I'd be running each for an hour one after another.

The last time I ran my NH and BFA on gasoline was either July 4th weekend or Labor Day weekend (I can't remember), but regardless they should be ran monthly to keep the residual gas in genny fresh. I did not load the gennys heavily, just enough to get them warm in the near freezing temps we had today. The JB has been started almost daily while playing with the choke and ATS. All three gennys performed wonderfully during the threesome .

JohnnyC
New Jersey
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  #3492  
Old 11-12-2017, 10:43:54 AM
JT240Z JT240Z is offline
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Default Re: What Have You Done to Your Onan Generator Today?

Nice looking family you have there.
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  #3493  
Old 11-12-2017, 05:26:28 PM
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Troll Troll is offline
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Default Re: What Have You Done to Your Onan Generator Today?

Decided I really didn't like the way the DJC cranked yesterday after setting a couple of months idle since last use. "Farm and Fleet" had both a sale on batteries going, along with a 10% off for veterans day so decided the welding truck could use a couple new batteries as the current installed pair are five years aged. Nothing wrong with them at all but don't like to be stranded much anymore...... Think it took longer to find my DD-214 proving I was a veteran than the decision to spend money on batteries.

Ran over to Farm & Fleet and picked up a new pair of group 29 top post batteries for installation into the truck and will place the existing batteries onto both the DJC, and the 5.0CCK. They both have group 31 top post batteries installed, but are about seven years aged IIRC so probably time anyways.

Out the door cost with the sale and veteran's discount was $175.31 with junk core batteries turned in. Not too bad I didn't think. These are 1150 cranking amp w/175 reserve capacity. Although only rated at two years, I typically get at least twice to three times that lifespan from them. All the manufacturers have cut back coverage lengths on starting batteries over the last several years.
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Old 11-12-2017, 07:02:31 PM
turtmaster turtmaster is offline
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Default Re: What Have You Done to Your Onan Generator Today?

why not take a engraver and date the batteries?

---------- Post added at 05:02:31 PM ---------- Previous post was at 04:52:52 PM ----------

fired up the 2.5 lk that has at least 900 hrs on it, since i didn't prime the carb with the priming lever on the fuel pump, or use the primer bulb on the fuel line, it took at least 30 seconds of cranking to refill the carb bowl, i need to replace the carb bowl gaskets, as the bowl drips a bit. when the gen finally started, i was greeted with quite a fair bit of oil smoke out of the muffler, it smoked up the shop
it has never done that before, the only thing I can think of why it did that is from the oil bath air filter, but its mouunted way lower then the carb, and the engine has not been tipped, and as far as i know the engine is in good shape any ideas?
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Old 11-12-2017, 08:59:39 PM
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Default Re: What Have You Done to Your Onan Generator Today?

Quote:
Originally Posted by turtmaster View Post
why not take a engraver and date the batteries?
They have the lift out date codes on the battery case(s) which are accurate. They also have decals affixed annotating date of manufacture and I always purchase batteries less than two months since manufactured.

These will be placed onto an equalize charge for a few hours and installed tomorrow afternoon.

Thanks,
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  #3496  
Old 11-12-2017, 09:18:25 PM
turtmaster turtmaster is offline
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Default Re: What Have You Done to Your Onan Generator Today?

i was looking at that, but i seen that they weren't out yet.
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  #3497  
Old 11-12-2017, 09:53:28 PM
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Default Re: What Have You Done to Your Onan Generator Today?

Quote:
Originally Posted by turtmaster View Post
i was looking at that, but i seen that they weren't out yet.
Yes, I lift them out upon installation. Also have a log book for the vehicles as there are at least 15 starting batteries in various trucks and implements, (all inclusive) around here. Usual starting battery rotation is four years for something relied upon such as personal vehicles and work trucks. These generators are a hobby so they warrant getting the used ones with service life left in them.

I have a 1000ADC carbon pile load tester for starting batteries and when they start to show weakness, I rotate them out rather than invite trouble.
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Old 11-23-2017, 01:19:39 AM
YellowLister YellowLister is offline
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Default Re: What Have You Done to Your Onan Generator Today?

Well it's not a onan.. but I got myself a 3600 rpm old kohler for 50 bucks.. was in the same family since new and looks to be in very good shape considering it's age and lived the first half of it's life in upstate ny so I was told.. he said he had it running the other day but would not fire today.. not really worried about it as it's just going to be a conversation peice.. but it does have the idle down option when no load is applied.. also got the honda from another guy on my way from key largo to west Palm beach for 50 as well
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  #3499  
Old 11-23-2017, 10:18:27 AM
EnginePat EnginePat is offline
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Default Re: What Have You Done to Your Onan Generator Today?

I put the new diaphragm in the garretson regulator and got the jb running.
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Old 11-23-2017, 11:23:44 AM
Leon N. Leon N. is offline
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Default Re: What Have You Done to Your Onan Generator Today?

I purcased a new daighram but never got around.to installing it. Original KN2 is about 50 years old. Subsequently found out my problem was a pluged vent port. Since then my JB has never run better. What a beautiful machine.

BTW I wonder if those folks who run there JB strictly on natural gas could comment on when or how they determine when to change the oil? What criteria does one use? Is it strictly accumulated hours or the "color" of the oil? I notice the oil becomes an almost orangey collar. The oil dos not turn black like that in gasoline fired engines.

Since my JB use profile is very low,, usually short run periods of at least 30 minutes over a 3-5 year period, I wonder if it is even necessary to change the oil? After all, the oil does not wear out, only the additives.

Appreciate at thoughts BTW, a happy thanksgiving day to all our Shakers!
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