Manual says when changing the air compressor to change the dryer diffuser at the same time but can’t find the dryer. It is 1.9L 1986 escort L.

emblo airmate twin tank fills up to 200 and then blows the relief valve. turned screw both ways quite a bit. Alot of little parts in there…is it something that can be tackled fairly easily? Maybe just cleaned?sprayed?Now my nailgun seals are shot…help