Onan 4000 air filter won't come off

[taigarazz]

trying to change the air filter on my 20 14 Onan RV generator.but I can't get the old air filter off. There is not enough room between the edge of the air filter and the generator cover to get it off. I could cut the old air filter but that doesn't solve the problem of not having enough space to get the new air filter on. Anyone have any suggestions? Thanks, Linda

[BFlinn181]

I suggest you contact an Onan dealer/service center. If it's the Onan enclosure, they must have a solution short of removing the generator to replace an air filter.

[wyorancher]

Onan sells a special wrench that fits on the bottom of the oil filter to remove the filter.. Use a socket in the bottom of the wrench and push up hard when removing. Napa also sells that same wrench. Note the squared off edges on the bottom of the oil filter.

[BFlinn181]

Originally Posted by wyorancher

Onan sells a special wrench that fits on the bottom of the oil filter to remove the filter.. Use a socket in the bottom of the wrench and push up hard when removing. Napa also sells that same wrench. Note the squared off edges on the bottom of the oil filter.

Are you saying the OIL filter has to be removed to remove the AIR filter?

[wyorancher]

Originally Posted by BFlinn181

Are you saying the OIL filter has to be removed to remove the AIR filter?

Sorry, guess I need to read.

[RRR]

Mine is an older 4000 but in order to change it you need to angle it down as far as you can. You nearly need to be forceful with it. Surprisingly the new one was easier to get on.

When I researched the problem the only thing I could find was to angle the filter up toward the corner but that didn't work for me.

[taigarazz]

yes, I am not finding much info on line.
Guess I'll just have to get a little aggressive with it this weekend

[HUGHP]

I grab by the left end and pull. Nothing has broke ...yet. Installing the new is easier.