Can't Remove Air Filter 2004 8.1 Workhorse

[Arch Hoagland]

Trying to change the air filter on my 2004 Monaco La Palma Workhorse W22 chassis.

I've unclipped the three retaining clips on the top of the air box and tried to pull off the cover by pulling up and out.

The outer side comes up a bit but the inside under the MAF hose isn't coming up. The bottom tabs go up on the outside but aren't budging on the engine side.

Is there some trick to getting the side closest to the engine to lift up and out?

Was going to pry it up with a screw driver but decided to ask first.

[Brazel's RV Performance]

Did you undo the hose clamps at the MAF connection? If not, I would loosen the clamps and pull the MAF sensor out so you take the pressure of the intake tube off the air box lid, should make it easier to pop off.

[Arch Hoagland]

Originally Posted by Ultra RV Tech

Did you undo the hose clamps at the MAF connection? If not, I would loosen the clamps and pull the MAF sensor out so you take the pressure of the intake tube off the air box lid, should make it easier to pop off.

No, I finally just wiggled it quite a bit and pulled it up and off. Had to wiggle it pretty good to put it back on.

I left the MAF in place but I did spray it pretty good with MAF cleaner while the engine was off and then with the engine running. The MAF is easy to get to with the air filter removed.

Had problems four years ago with O2 sensor CEL. Turned out the final cure was cleaning the MAF so I decided to clean it while changing the air filter.

It's a bit of a tight space to work in...had my levelers extended all the way on the front and then two jack stands under the cross bar just in case.