cancel
Showing results forย 
Search instead forย 
Did you mean:ย 

New Onan 2800 Generator

racer10
Explorer
Explorer
I have a new 2014 210 Popular Chevy equipped with the latest state of the art Cummins generator...... wait... read on!! Yesterday I decided to change the oil. First thing I noticed was that the outside cover is different. You will need a screw driver to unlock the cover to access the dip stick. To change the oil you will need a 9/16 socket wrench with a short extension. Now here is where the fun begins. When the drain plug got to the point of release (the drain plug is on the bottom of the unit so when it releases it will fall to the ground or is supposed to! LOL) down poured the oil and the drain plug flew into the bottom cover surrounding the access hole. Now to be more specific, there is a cover on the bottom of the generator that is about an inch or so below the drain plug and the entire generator. To access the drain plug, there is a round opening just wide enough to get about two small fingers up to the drain plug, but barely. To make it even more fun, there is a lip surrounding the access hole that keeps anything from coming out the hole. My drain plug was sitting on the area surrounding the hole but I couldn't get my fingers up in the hole to grab the drain plug. The lip around the hole made it impossible to retrieve the plug. For the next hour I tried everything possible to grab a hold on that drain plug. It's made of brass so a magnet didn't work. Finally, I used a surgical tool that I happened to have with curved ends and I was able after several tries to grab hold of the plug, lift it over the lip and out the hole. Now.. read on. It's get better.

Pouring the oil in the fill hole: The fill hole is about two or three inches into the unit and on an angle and the fill hole is small. Now.. how do I get oil in that fill hole?? hahaha I happened to have a small funnel and I attached a 4 inch rubber hose to it and inserted it into the fill hole. As you know, you must lie on your back as you are doing all this and the funnel, after inserting it in the hole, is near the top of the coach, not much room there to get a bottle of oil angled to fill the hole. This was another ten minutes to do this because of the angles and the fill hole being too small to accept just a small amount of oil at a time.

Now this project which should only have taken 15 minutes ended up taking about 2 hours. I can't imagine in my wildest dreams what the engineers at Cummins were thinking when they designed this new generator. On top of all this, the generator is extremely noisy, much more than the previous model. Regarding the drain plug hole, all the engineers had to do was make the access hole on the bottom cover about an inch or so wider and it would have made all the difference in the world to access the drain plug. And I would personally like to see the engineers try to put oil in that fill hole!!! The design is about as unfriendly as it gets. All they had to do was extend the fill hole out near the outside of the unit and it would have been at least easier to access.

I called Cummins and they had no answers for me regarding all this. The Cummins engineers get a big fat "F" for the design of this new unit. Apparently they have no common sense on how customers must deal with these units. Good luck to all of you dealing with this if you buy a new Roadtrek with a Cummins generator.
17 REPLIES 17

My_Roadtrek
Explorer
Explorer
"New Onan 2800 Generator"

Fastpaddler
Explorer
Explorer
lincoln30 wrote:
OP, reading your post reminded of a car manufacturer who designed a car where you had to jack it up to get to a spark plug.


And there was the Ford Aerostar where you jacked up car,took off left front wheel to change oil filter. Groan.
AL

OKPETE
Explorer
Explorer
My Roadtrek wrote:
Penzoil Fluid Transfer Pump. $5

I agree ,the fifty cent nozzle. Works great.

racer10
Explorer
Explorer
I did hear from Cummins: ( from Brian Marier )

"I have forwarded your comments and suggestions to our engineering staff for them to review for future designs and if possible, make whatever changes they can to make servicing this model more user friendly."

If you have one of these new generators, you can express your concerns to:

brian.e.marier@cummins.com

P.S. Aside from the oil change issue, if you have a new B with this Cummins generator, get ready for a very noisy experience!!! One of my friends who had been in my previous RT 210C popular... "Wow.. is that thing really noisy!"....

lincoln30
Explorer
Explorer
OP, reading your post reminded of a car manufacturer who designed a car where you had to jack it up to get to a spark plug.

mlts22
Explorer
Explorer
Thank you very much for the link.

My Roadtrek wrote:
Penzoil Fluid Transfer Pump. $5


Just bought that (it is an add-on item, so it gave me the excuse of buying some RV stuff.)

I've been seeing a trend in general to using oil evac pumps. I read that some newer cars have no drain plug in the bottom, so a pump is a must for those.

My_Roadtrek
Explorer
Explorer

retired4fun2002
Explorer
Explorer
Got to love new generation products, ha!
I would like to recommend you spend $.50 at Walmart at buy a Blitz Flex Nozzle. They are truly unique, not to mention cheap, and handle the job on the Onan easily. The nozzle fits the quart and gallon jugs. You screw it on, pull the nozzle up to extend it, bend it to a horseshoe and it will go right in the hole - no mess at all. I have used the marine pump, and hose taped to the bottle, etc., but this little ole cheapie is the real deal. I now have a dozen, carry one in the B for when someone mentions the Onan. Safe travels.

charles
Explorer
Explorer
Just stick some crumpled up waxed paper between the generator and the bottom cover that will keep it from going in between and the paper will pull right out when you finish up. I use a 12 oz. hand pump oil can with a flexible spout that I have had since the 60's, it works great. A little off topic but I use a turkey baster to put distilled water in the batteries, that also works great.

Nick
2019 Thor Chateau 22B

wsfurrie
Explorer
Explorer
If the clearance is that tight a Fumoto valve would not fit. I used one for 10 years on a diesel pickup, great product. There is a suction pump sold at auto stores that will remove oil through the fill hole. It works but can be messy.
Wayne, 05 PW Excel

http://www.fumotousa.com/
Wayne

racer10
Explorer
Explorer
drsolo wrote:
flexible pick up tool


hahaha I have one of those tools. I thought about using it but that tool would never get in that small plate hole up over and down the lip to that drain plug. I could get my fingers on it but I couldn't get it over the lip and I kept trying on and off for about a half hour. BTW, the drain plug is brass so no magnetic tool is going to pick that thing up.

racer10
Explorer
Explorer
Pauljdav wrote:


BTW why change the oil already?

Paul


Cummins recommends changing the break in oil after 20 hours I believe. Regardless, I was over the limit when I checked the manual, so it was over do.

bobojay5
Explorer
Explorer
Sounds like the same Cummins design I've had on 2 previous RV's. It takes 1 oil change to figure out the correct tools you need to have to get it done with less mess.
1 qt. is not a whole lot of oil to gush out. Change the oil on a V6 Sprinter. There it's 13 qts. (admittedly alot easier to get to with more room)

Anybody tried a Fumoto valve on these generators yet?
Bob & Sharon
Eastern Kansas
2013 Winnebago ERA 70A
Class B Van

drsolo
Nomad
Nomad
flexible pick up tool
Ingrid and Dan Retired teachers from Milwaukee, WI
1992 GMC Vandura conversion