Forum Discussion

PhilandJoyce's avatar
PhilandJoyce
Explorer
Oct 11, 2019

Cummins/Onan Air Filter Removal

Have a '14 Minnie Winnie with a C/O 4000 onboard.
We haven't had to run it a lot, but I still like to keep up with maintenance and winterizing.
We've not had ANY issues with the unit.
Went to pull the air filter for a quick "blow-out", just because.
Spun off the wing-nut for the cover.
Removed the cover.
Spun off the wing-nut for the filter.
Air filter moves out, BUT, no matter what direction I turn it, I can NOT get it past the threaded post.
Called C/O and was told by the "tech" Brian, that I might have to take the entire shroud off to get the filter out.
WHAT?
The unit is MOUNTED under the RV!!!
I am NOT going to drop the entire unit just to pull the shroud just to check the air filter.

Signed,
"Pulling My Hair Because Of Another Winnebago Design Flaw"
  • Can't remember the details now but you have to get it angled just perfect, use adult words or pray, take a break, then it comes out. To reinstall about the same.
  • O.P. is correct. If you move it around, there is an angle that it will clear and come out. Just gotta work with it a bit. Be careful using air nozzle to blow out filter, be gentle...too much air pressure can separate media fibers and filter will then pass more dirt than it should.
  • Air filter on my Onan is PIA to remove - welcome to RVing. I am one of those RVers who tend to run their generator monthly for a couple of hrs as recommended by Onan - as such I don't put enough hours on it to mess with the air filter - I do change the oil and filter annually.
  • i have the same problem on a 2011 freelander/w 4000, found if you work with it you will find a sweet spot where it will come out. patience.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,190 PostsLatest Activity: Jan 24, 2025