rustykramermetalfab Posted July 4, 2021 Share Posted July 4, 2021 (edited) 2000 Dynasty. last fall my step cover would hardly move and Air was hissing. Found out this is a MAC/air valve issue. Valve replaced. I was very careful to take photos and mark the lines. Photos must have been deleted I can not locate them. Air step cover moves so fast with the new valve it is scary. It is like there is no slow bleed like I had previously. The real issue is my Park brake will not release and the coach will not move. I am just positive the lines are on the same as the old valve but I must be wrong. Am I safe to switch lines and try them on a different port? There are three air lines and two wires. I switched the wires and nothing seems different. TIA. Update. My Haldex Purge is putting out some oily water. New haldex filter kit installed april 2018 and 4 k miles. Coach is Stored in climate controlled dry building. Edited July 4, 2021 by firstname.lastname@example.org new information Link to comment Share on other sites More sharing options...
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