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Grit dog

Black Diamond, WA

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Posted: 10/28/21 08:16am Link  |  Quote  |  Print  |  Notify Moderator

Well, I don’t discount your experiences gents. So what % chance you think that the slip rings will corrode and need cleaned if it sits 2,6,12 months?
I’m new to these particular generators (onan RV) but sounds like they require more care or maintenance than the 100s of other generators I’ve used.


2016 Ram 2500, MotorOps.ca EFIlive tuned, 5” turbo back, 6" lift on 37s
2017 Heartland Torque T29

wa8yxm

Davison Michigan (East of Flint)

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Posted: 10/28/21 01:13pm Link  |  Quote  |  Print  |  Notify Moderator

Grit dog wrote:

Well, I don’t discount your experiences gents. So what % chance you think that the slip rings will corrode and need cleaned if it sits 2,6,12 months?


Odds I can not calculate. Seen it happen I have. thankfully not my rig, Thankfully the people who had it happen were parked next to the only active 30 amp outlets on the desert campground (MY Rig) and then only about half the time (When I was generating).

The error code the ONAN threw was "Speed to low or low battery" by the way.


Home was where I park it. but alas the.
2005 Damon Intruder 377 Alas declared a total loss
after a semi "nicked" it. Still have the radios
Kenwood TS-2000, ICOM ID-5100, ID-51A+2, ID-880 REF030C most times


LittleBill

Scranton, PA USA

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Posted: 11/08/21 07:43pm Link  |  Quote  |  Print  |  Notify Moderator

i was given my rv, the onan 4k hadn't run in 5 years due to a ignition coil issue. Fixed coil. generator runs flawless. take from that what you will





JaxDad

Greater Toronto Area

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Posted: 11/09/21 05:36am Link  |  Quote  |  Print  |  Notify Moderator

Grit dog wrote:

Well, I don’t discount your experiences gents. So what % chance you think that the slip rings will corrode and need cleaned if it sits 2,6,12 months?


A friend has a cottage on an island in the Great Lakes. It is only used from the end of March until the beginning of November. The only electricity is provided by an old gasoline powered Onan 4KY gennie.

Each fall the carb is run dry after the oil and plugs are changed. That’s it.

Come spring it starts right up and runs all summer just fine, as it has like that for decades.


BTW, the edict to ‘exercise’ an Onan only appeared in the manuals AFTER it became Cummins Onan. So is it a technical requirement or a product liability requirement?

Matt_Colie

Southeast Michigan

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Posted: 11/09/21 10:08am Link  |  Quote  |  Print  |  Notify Moderator

Silas,

You show great care and initiative, and that will serve you well.

Now, the problem with the advised monthly "exercising" the generator is that this old story is perpetuated by the people that sell the parts for said generators. It is bunk.

The varnish that was used on windings that had moisture trouble was replaced during WWII with the new material that does not absorb moisture at all.... So, there is not reason to warm those windings at all during storage.

The old fuel gumming up the carburetor is a real, but easily solved issue. In spite of you might have read, old leaded fuel was worse that the new alcohol loaded fuel for gum, but the new alcohol fuels can become corrosive. No good choice here at all ever. The real answer is to get the fuel out of the carburetor. If the generator has an electric fuel pump (many do) then disconnect that pump with the machine running and let it run dry. If it does not, find a place that you can disconnect or clamp the fuel line closed. It is even better if you can find the carburetor (I recently saw a new Onan and it took a while for me to find it) and you can get at it to actually drain the float bowl. That is what you really want to do.

I have several generators, I don't "exercise" any of them. One of the Onans will be 50yo soon and the is a Honda that is a couple years newer in the collection. All are drained and left alone - sometimes for a year or more and I know all will start as soon as they have fuel and a reason to start. That reason being that I pushed the button or cranked it up.

Matt - Long time engine professional


Matt & Mary Colie
A sailor, his bride and their black dog (one is waiting for us at the bridge) going to see some dry places that have Geocaches in a coach made the year we married.


Grit dog

Black Diamond, WA

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Posted: 11/12/21 09:43am Link  |  Quote  |  Print  |  Notify Moderator

Here Here!
Do y’all believe Matt Colie because he’s a “long time engine professional” or finally get tired of arguing about something you don’t understand?

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