hi all, i have a 1995 volvo FL10 which experienced a faulty air compressor which was replaced, along side a governor and 4 way valve, foot brake valve rebuild and 2 brake boosters, now the air build up is back but much slower than before and there is a hissing sound from the front small exhaust outside of the truck only when parkbrake is lifted, air retention in the system is also slower, also before the issue previously with the old compressor my air build up (the 2 tanks) was at the same time, now the tank 1 and tank 2 build up air in a different sequence, would this be a faulty park brake valve?
No replies yet.