Good Sam Club Open Roads Forum: Class A Motorhomes: Cleaning genset
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two travelers

Smithtown, NY

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Posted: 10/04/18 07:53pm Link  |  Quote  |  Print  |  Notify Moderator

During a recent trip we went through some pretty dusty construction zones. While changing the oil I noticed that there was a lot of dust/dirt on the left side where the "electronics" are can I spray that with water to get rid of some of the dirt? Are there drain holes in the pan under the genset to get rid of the water?

Artum Snowbird

Campbell River, B.C., Canada

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Posted: 10/04/18 08:37pm Link  |  Quote  |  Print  |  Notify Moderator

I did not even know there was an electronics board under the mud that was on top of it, had no idea at all. It still worked just fine. Mine was five years old and not a problem.


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Gresham, OR, USA

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Posted: 10/04/18 10:10pm Link  |  Quote  |  Print  |  Notify Moderator

The boards in an Onan are covered with conformal coating. So basically waterproof. What isn't waterproof are the terminals in the connectors. And a water short between connections wouldn't be good. So disconnect the battery first, spray the area with a bit of water and Dawn, rinse completely, let dry completely, pull the connectors and shake any water out, blow them dry with compressed air, maybe sit overnight or several hours in the heat of the day without connecting the battery. Then you should be good to go.


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Son of Norway

Denver, Colorado

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Posted: 10/04/18 11:51pm Link  |  Quote  |  Print  |  Notify Moderator

Try electronics cleaner spray from an auto shop.


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NutHouse2016

Springfield, OR

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Posted: 10/05/18 06:34am Link  |  Quote  |  Print  |  Notify Moderator

I use dawn dish soap and water to clean off gen set. Spray WD40(Water Displacement formula 40) on connectionsbefore and after cleaning.

ScottG

Bothell Wa.

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Posted: 10/05/18 09:22am Link  |  Quote  |  Print  |  Notify Moderator

I spent my career repairing electronics (component level). I strongly suggest you do NOT use any type of circuit board cleaner or solvent. It will very likely attack the conformal coating and you don't want that. Don't spray it with high pressure air either.
Frankly, I would leave it dirty. It wont hurt it and getting it wet (esp. certain components) can easily lead to latent failures.


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way2roll

Wilmington NC

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Posted: 10/05/18 10:41am Link  |  Quote  |  Print  |  Notify Moderator

Cleaned my genset panel once on a former MH. A week later the board fried. Due to cleaning the seal was compromised and moisture got inside.

DrewE

Vermont

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Posted: 10/05/18 10:50am Link  |  Quote  |  Print  |  Notify Moderator

A broom/dry toothbrush/chip brush and maybe a damp rag would be about all I'd do. A little bit of dirt on the outside of wires or electronic modules won't cause problems, particularly in those designed to be used in a decidedly not dustless environment.





Executive

California/Arizona/South Dakota

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Posted: 10/05/18 11:26am Link  |  Quote  |  Print  |  Notify Moderator

I douse mine with Simple Green, let it sit for a few minutes then hose it off. Wipe it down with a rag then turn it on and let it run for 10-20 minutes. I sometimes turn on the A/C so the genset gets some exercise. After that, I put some wax on it and it looks like new again. Never have had any issues with it. After all, it sits in a wet environment when you drive in the rain. Why would water from a hose bother it...YMMV...Dennis


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goff1256

Montrose Co

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Posted: 10/05/18 03:08pm Link  |  Quote  |  Print  |  Notify Moderator

I use the gunk Forum cleaner and then spray it with car wash a couple of times a year no problem so far


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