Onan 2500 LP Oil Change?

[ghnl]

Maybe Fumoto knows? https://www.fumotousa.com/

 

[RizeMaster]

Maybe Fumoto knows? https://www.fumotousa.com/

Maybe... worth a shot. Their fancy website selector shows under Industrial Equipment -> Onan -> Onan Engines with 12mm plug and Onan Engines with NPT-3/8 plug.


So that doesn't help me, since the 120pg Onan manual does not mention the oil plug size. :lame:

 

[ghnl]

What model year is your rig? I read (somewhere) that older models use the NPT plugs, newer models use a parallel (metric?) thread. But I don't recall when they changed, either...

If you can get a good look at the base of the drain plug you might be able to see the threads on the NPT plug. The straight plug uses a gasket or O-ring.

https://www.ezoilchangevalve.com/onan-generators.html

 

[RizeMaster]

What model year is your rig? I read (somewhere) that older models use the NPT plugs, newer models use a parallel (metric?) thread. But I don't recall when they changed, either...

If you can get a good look at the base of the drain plug you might be able to see the threads on the NPT plug. The straight plug uses a gasket or O-ring.

https://www.ezoilchangevalve.com/onan-generators.html

Thank you, that is helpful! Time to squeeze myself under the camper again and look for the oil plug.


It's a 21-22 Rize. They call it a 22, but it was sold mid 21.

 

[RizeMaster]

I was trying to get the manuals directly from the horse's mouth https://www.cummins.com/generators/rv-generators/rv-generator-manuals


But it seems like they tightly restrict access to their FREE and DOWNLOADABLE manuals, at least as far as I can tell.

 

[Jimbo56]

I guess we need a better picture of how the generator is installed in your rig.

They all drain from underneath. Getting (safely) underneath is likely your first obstacle. An olde fashioned lubrication pit would be ideal... I've got a four post lift in my garage (but the doors aren't high enough to get an RV in there). Very nice way to work on my sports cars or pick up truck...

Eric, Where are you located in NC?

 

[ghnl]

Mebane

 

[16ACE27]

I was trying to get the manuals directly from the horse's mouth https://www.cummins.com/generators/rv-generators/rv-generator-manuals


But it seems like they tightly restrict access to their FREE and DOWNLOADABLE manuals, at least as far as I can tell.

Operation and installation manuals are free for the download, parts manual? - not so much.

Look here:

https://yakimagenerator.com/onanparts-manual/

Looks like the 2.5 KVA takes a 12 mm drain plug.

 

[Jimbo56]

Mebane

Bucees is comin,

 

[RizeMaster]

Operation and installation manuals are free for the download, parts manual? - not so much.

Look here:

https://yakimagenerator.com/onanparts-manual/

Looks like the 2.5 KVA takes a 12 mm drain plug.

Thank you!!! I'll double-check to see if it may be a NPT tapered one with threads visible.



Looks like I need the drain valve, an oil pumperthing, new air filter, and good luck with dropping the battery out of the way. Oil I should have somewhere.

 

[RizeMaster]

In case anyone cares, talking to a friendly Cummins/Onan support guy, turns out I have a gas, not propane generator (how did I figure that), so I will need to do the recall thing.

Also, the Oil Plug is a 10mm 1.25 thread. There are EZ valves for about 28, and Fumoto valves for about 40 available.

 

[NordicVetMBA]

Does someone have tips/tricks or links to how to change the oil in a QG2500 LP generator in a Rize (Scope) camper?


The issue is that it is under-mounted and tightly built in between battery and other stuff. Plus, it is very close to the road, so I would have to raise it up some (Lynx Lego blocks).


There is a bit of a blog here - THE INTERSTATE BLOG: OIL CHANGE FOR AN UNDERMOUNTED, CONSTRICTED ONAN 2500 LP GENERATOR but its for a different camper.


The RV place wants their hourly charge of $249 + parts. I would like to do it myself, but no idea even where the dipstick is. Getting the new oil in with no room to tilt a bottle may be worked around using a little pump. I do "regular" oil changes on all my cars including the ProMaster, so there is some basic understanding.

Two things that I considered with the same question:

1.) I don't need to do it very often.
2.) Burn it up and a new one will cost me about $5k.. (8 kw QuietDiesel in my case)

Freightliner charges me about the same $250 add-on but includes parts/oil/labor. They just do it while the MH is on the lift.

Maybe shop the service quote or look at having it done while on a trip and passing through a cheaper area? (I do that).