i know what part you are talking about - i have never taken it apart but i do drain the water out of it often - there is very very little in it but there is a stop cock on the bottom so i crack it and out comes a mist of water - theres a filter in there? - wow - i am learning
thanxs
bm
and i found out that it is a 5 cfm pump listed in the service manual but the pump has 6cfm listed on the one of the parts