Onan Drain Plug Leak [message #304792] |
Tue, 02 August 2016 20:35 |
|
thainglo
Messages: 132 Registered: March 2015 Location: Iowa
Karma: 2
|
Senior Member |
|
|
When I changed the oil in my Onan last summer, I just screwed the drain plug back in and filled it up with oil. Everything was fine until I ran the generator for a few hours during my almost-Branson trip to run the AC. When I got back to the house, the Onan had developed a small leak around the drain plug.
I checked the FSM but t didn't see any specifics on the washer or o-ring for the drain plug. Anyone have a lead on the right way to seal up the drain pan and plug? Any help would be much appreciated.
Thanks!
Matt
Matt Sladek
1976 Eleganza II
Coralville, IA
|
|
|
Re: Onan Drain Plug Leak [message #304793 is a reply to message #304792] |
Tue, 02 August 2016 20:55 |
Bullitthead
Messages: 1411 Registered: November 2013
Karma: 5
|
Senior Member |
|
|
Isn't that pan made of sheet metal? It may have a crack around the drain plug bung. Clean it off with brake cleaner and examine it carefully. If a magnifying glass will still not show you the leak, drain the oil and put 2 cups of diesel fuel in there and observe...diesel will seemingly get through any possible opening. If it turns out to be the plug/pan mating surfaces, use a copper crush washer to make the seal. Don't forget to drain the diesel back out.
Terry Kelpien
ASE Master Technician
73 Glacier 260
Smithfield, Va.
|
|
|
|
Re: Onan Drain Plug Leak [message #304800 is a reply to message #304794] |
Tue, 02 August 2016 22:49 |
Bullitthead
Messages: 1411 Registered: November 2013
Karma: 5
|
Senior Member |
|
|
Oh wow...I wish I did have an idea, but it's been 2 years since I messed with that pan when I put the genset in its home. On another current thread someone has been unable to find the washers in 3 different parts stores and I'm sure I've seen them there, so I may be having that CRS syndrome that seems to happen when you acquire too many toys to play with. There is a GMCer on here that is the Onan authority and maybe he will chime in. It might be handy to just get all the sizes available where ever you can find them (within reason) and carry the extras with you as they can save the day in many situations.
Terry Kelpien
ASE Master Technician
73 Glacier 260
Smithfield, Va.
|
|
|
|
|