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Author Topic: onan generator life span  (Read 12853 times)

westley

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onan generator life span
« on: June 03, 2009, 08:35:21 PM »
Looking to purchase my first class A.    Should I shy away from a rv with 1600 plus hours on a onan 4000 microquiet??   This seems like a lot of hours and not sure how it was maintained.

FrontrangeRVer

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Re: onan generator life span
« Reply #1 on: June 03, 2009, 09:39:22 PM »
Seems like alot of hours to me, but I think you have several hundred left before I would be concerned.

We had a 4K Onan, and one thing I noticed right off that it doesn't have an oil filter.  :o
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rhmahoney

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Re: onan generator life span
« Reply #2 on: June 04, 2009, 07:54:12 PM »
"We had a 4K Onan, and one thing I noticed right off that it doesn't have an oil filter."

I doubt that. They do hide them very well, however. Look again on the underside adn open all the access panels. Needs fresh oil and filters every 150 hrs
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FrontrangeRVer

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Re: onan generator life span
« Reply #3 on: June 04, 2009, 08:51:01 PM »
Nope...the 4K's don't have oil filters.....not even the one I OWNED.   ::)

« Last Edit: June 04, 2009, 09:04:44 PM by FrontrangeRVer »
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DonTom

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Re: onan generator life span
« Reply #4 on: June 04, 2009, 09:06:20 PM »
"We had a 4K Onan, and one thing I noticed right off that it doesn't have an oil filter."

I doubt that. They do hide them very well, however. Look again on the underside adn open all the access panels. Needs fresh oil and filters every 150 hrs

I cannot speak for other types of generators, but my Generator is a Onan MicroQuiet 4000 (model:4KY FA261OOJ) and there ain't no oil filter. And none is mentioned in the manual under the oil change procedure.

-Don- SSF, CA
-Don-   AA6GA

2000 Fleetwood Tioga 24D, 7.4L

SSF, CA    or   Reno, NV

Gary RV Roamer

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Re: onan generator life span
« Reply #5 on: June 05, 2009, 08:38:07 AM »
Welcome to RV Forum, Westley!

1600 is a lot of hours for a gas engine generator, but probably preferable to one that was used very little. Generators are subject to internal failure from moisture if if not run regularly, so very few hours is as much a negative as too many.  Any sort of generator repair is an expensive item, though.  I'd consider it to be less than desirable, but not an automatic disqualifier.
Gary
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Gary Brinck
2004 American Tradition
2007 GMC Acadia
Homebase: Ocala National Forest, FL

BIGDOG

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Re: onan generator life span
« Reply #6 on: June 05, 2009, 09:38:57 AM »
My 4K Onan Emerald Plus has an oil filter.

PorscheMark

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Re: onan generator life span
« Reply #7 on: June 05, 2009, 09:45:26 AM »
I cannot speak for other types of generators, but my Generator is a Onan MicroQuiet 4000 (model:4KY FA261OOJ) and there ain't no oil filter. And none is mentioned in the manual under the oil change procedure.

-Don- SSF, CA

Onan Maintenance video on th MicroQuiet...shows how to change the oil...no mention of a filter...
http://www.cumminsonan.com/rv/video/howtomicroquiet4000/
-Mark 'n' Jane
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other misc motorized toys and trailers.

Gary RV Roamer

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Re: onan generator life span
« Reply #8 on: June 05, 2009, 01:24:31 PM »
Hey guys, can we get back to the original question?  You can debate which models have oil filters elsewhere.
Gary
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Gary Brinck
2004 American Tradition
2007 GMC Acadia
Homebase: Ocala National Forest, FL

Mc2guy

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Re: onan generator life span
« Reply #9 on: June 05, 2009, 02:50:24 PM »
A 3600 RPM generator with 1600 hours, would be roughly equivalent to a car with 60,000 miles in terms of number of piston detonations (making some gross assumptions).  Obviously a 10hp gas motor is not as sophisticated as a car, but I wouldn't think it is a non-starter.  I have read stories of folks going 5000 hours or more on onan gas generators, but I can't corroborate that.  I would be more afraid if I found a ten year old generator with 100 hours on it for the reasons Gary mentioned.
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FEman

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Re: onan generator life span
« Reply #10 on: June 05, 2009, 03:15:18 PM »
During the walkaround when we purchased our Class C, I was told that about the biggest problem with generators is lack of use.  I was told to use it whenever needed and basically not worry about wearing it out.  They have a much longer life span than most folks think.

It is also important to exercise the generator at least monthly all year long, even if the unit is in storage.
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DonTom

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Re: onan generator life span
« Reply #11 on: June 05, 2009, 07:44:12 PM »
Quote
"It is also important to exercise the generator at least monthly all year long, even if the unit is in storage."

For at least two hours continuously.    One long run is a lot better than several shorter runs.

-Don- SSF, CA
-Don-   AA6GA

2000 Fleetwood Tioga 24D, 7.4L

SSF, CA    or   Reno, NV

Chet18013

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Re: onan generator life span
« Reply #12 on: June 06, 2009, 05:57:46 AM »
We have an Onan 6.5KW generator in our coach. It runs almost all the time the coach is moving--we like to be comfortable. It now has 2459 hours on the meter and is still going strong. I do change both the oil and filter every 100 hours. I fully expect to get at least 5000 hours from it before an overhaul.

To answer your question, 1600 hours on the genset wouldn't bother me at all.

Chet18013
Chet18013
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Gary RV Roamer

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Re: onan generator life span
« Reply #13 on: June 06, 2009, 08:40:14 AM »
Just to keep things in perspective, I believe Chet's Onan is a diesel and running at half the RPMs of gas genset. Ergo, less engine wear for the same number of hours.

I think the consensus is clear; 1600 hours is not an issue.
Gary
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Gary Brinck
2004 American Tradition
2007 GMC Acadia
Homebase: Ocala National Forest, FL