Air filter cleaning question

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Auto Shop teacher
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Air filter cleaning question

Post by Auto Shop teacher » Wed Feb 27, 2019 9:58 am

Has anyone tried dipping the factory air filter in an ultrasonic cleaner and what were the results. They work fine on carburetors and I was thinking of trying one with 409 cleaner and water. Any ideas?

Chuck W.
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Re: Air filter cleaning question

Post by Chuck W. » Wed Feb 27, 2019 5:23 pm

Years ago, in another life, we tried sending Cat engine air cleaners out to a company who used a chemical wet bath to clean filters. If I recall, the paper media did not hold up too well after the 2nd or third cleaning and the life was considerably less than new ones. The cost savings for a cleaned filter was nothing compared to an engine rebuild due to dirt entry. We never tried cleaning the inner safety element. But that's been a long time ago and maybe the process has improved....and the AO-42 does not use near the air that a 3412 engine does!
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Re: Air filter cleaning question

Post by Auto Shop teacher » Wed Feb 27, 2019 6:20 pm

Does the mule use paper media in its filter? It looks like something other than paper.

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Re: Air filter cleaning question

Post by muleman7 » Thu Feb 28, 2019 11:11 am

I now use an after market filter that fits and are readily available. Since New NOS filters are very expensive.

In the past I used a pressure washer and placed the original filter on a pipe to allow it to spin while washing. I was careful not to get so close to damage the filter. It worked well. The element must be some type or cotton or fiber as it does not appear to be paper.

Instructions for Cleaning per Decal

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After Market Filter Instructions for modification and brands follow link for Post.

viewtopic.php?f=148&t=264977

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Re: Air filter cleaning question

Post by Auto Shop teacher » Thu Feb 28, 2019 2:38 pm

Thanks for the photos and reply Charles. I have read the cleaning instructions and though I would take cleaning one step farther using the ultrasonic cleaner and a 409 water based cleaner. Conventional paper air filters would turn into a spit wad if cleaned that way.

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