12-20-2012, 09:32 AM
My 90 has the newell factory installed macerator on the passenger side of the tank. That is the only reason I would use that side was if I was putting a macerator on and I would probably take the air valve off anyway. Tom
2014 Haulmark 40' Super C on Freightliner Cascadia ISX15 Easton 13 speed
Former Owner 1990 38' Newell Coach 236 8V92
Former Owner 1999 45'8" Newell Coach 526 Series 60
Former Owner 2002 45'8" Newell Coach 608 Series 60