[BusNit]

I wanted to take the coach out for a ride today but the rear brake needle shows 0. Dryer pops off as usual. Brake release will release when pushed but obviously rear wheels are locked. What is the next area to check? Check valve on rear tank? If so, I can't get to it without moving the coach forwards as it is parked over dirt. So frustrating. This has been sitting for a couple of months.