The air dryer filter(desiccant filter) should be changed every 2-3 yrs for MH's, air brake trucks and bus's change them at least annually due to useage. They usually fail due to oil contamination, as moisture is purged out when you hear the pop/hiss.
There are three major brands of air dryers
Haldex,
Bendix and
Meritor, they are quality units. Any truck repair shop will have the dryer/filter and rebuild kits. Just take a clear picture of yours and visit any truck parts store or compare your pictures to the websites, those truck repairs shops usually have them in-stock.
This
. video shows and explains how to perform an air brake test, which should be performed prior to every days drive.
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2000 Winnebago Ultimate Freedom USQ40JD
, ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA.
" My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy
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