02-05-2016, 07:16 AM
I am assuming the air dryer is the unit that looks to be around 4 inches diameter about 12 inches long, is finned its entire length and is where the air blows out when it reaches top pressure. There are 2 wires at the bottom. If this is the check valve mentioned by Jon then it would be pretty easy to CHECK out.
1988 40 ft 8v92 newell
Coach name Big Blue
25 ft Haulmark car hauler with Andersen Anti sway
2012 Toyota FJ Cruiser.