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Manuals for large Onan generators?


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Old 01-10-2006, 07:19:20 PM
Jeffw5555 Jeffw5555 is offline
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Default Manuals for large Onan generators?

I'm getting my recently purchased 75.0 ENT generator up and running, and purchased the UR service manual for it, thinking that it included the stuff that normally is in a service manual.

Turns out the manual only covers the alternator and controls. None of the other aspects of the system are covered. (engine & governor, for instance) It's got the 460 Ford turbo engine, which I am converting to LP from NG.

Didn't Onan make "proper" service manuals? I assume I have to get an indivdual service manual for the engine. (where would I get one?) How bout the governor? At this point I only have two really basic questions. How do you set engine speed? Is there a governor sensitivity adjustment?

Any advice is appreciated.

Jeff
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Old 01-10-2006, 07:46:54 PM
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EricWood EricWood is offline
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Default Re: Manuals for large Onan generators?

Northern Power Products, Inc, is the OEM provider of Ford industrial engines to Onan. They provide very good engine service manuals. (for a price, of course )

2859 Lexington Ave S
PO Box21348
Eagan, MN 55121
(651)-452-8900

I'm guessing you're talking mechanical governor? The bolt/locknut combo that pushes down on the arm with the spring attached is your speed adjustment. Sensitivity is with the threaded-rod holding the spring snug. Using a heavy-load source (if you have one) adjust for the best frequency response (the most minimal loss in speed between no-load and full-load), and still have stability. If limited in sizable loads to apply, you can dial it in where you install it by setting the Hz to 60 while under the load it will normally carry. [Also, ensure the belt runs this governor is running fairly slack. Any appreciable tension, and you'll have a catastrophic governor failure at some point.
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Old 01-10-2006, 08:05:42 PM
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Billy J Shafer Billy J Shafer is offline
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Default Re: Manuals for large Onan generators?

Yes Onan does have a manual for the ENT.I will post the number as soon as I can find mine.If you are looking for the engine manual you will have to go to Ford such as Northern Power.Onan only has engine manuals on engines they make.
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Old 01-10-2006, 09:42:21 PM
Gunny Gunny is offline
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Default Re: Manuals for large Onan generators?

How about full model, serial and spec number. What kind of governor? Mechanical or electronic?
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Old 01-11-2006, 03:31:52 AM
Jeffw5555 Jeffw5555 is offline
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Default Re: Manuals for large Onan generators?

Thanks for the replies. It is model 75.0ENT-15R/25282A, serial number K820641770.

It has a mechanical governor.

Jeff
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Old 01-16-2006, 02:48:33 PM
Felicia Posey Felicia Posey is offline
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Default Re: Manuals for large Onan generators?

i'm looking for a manual for onan 15.0 GenSet
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Old 01-16-2006, 03:03:33 PM
Felicia Posey Felicia Posey is offline
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Default Onan 15.0 GenSet

I need a owners manual or wiring diogram
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