probably moisture in the air lines , however it takes about one hour of driving before my pac-brake works.

any ideas?

thanks

 

Which Pacbrake do you have? If it is the older style that uses vacuum, I would check that the air inlet on the controller solenoid is good. Moisture should not get into the line but "things" happen. If it is the PRXB someone else can help.
Stan

 

thanks

the truck is "new to me" and so is the pac-brake, i be believe it's the PRXB type, but i'm not completely sure, there is an air compressor and tank with air lines.

edit, it maybe this model as i a have 4" exhaust and a hx35 turbo.

 

Mine do the same, dump a cup of air brake antifreeze (methanol) in the air tank. It will coat all the lines and take care of the freezing.

 

thanks BD

sounds aboot right, will try the methanol [same solution for air brake lines], very, very plausible!

cheers

Jammie

 

problem gone.

engage the pac-brake switch at the beginning of the trip for a couple of minutes and hay-ho the pac-brake is working, no delay.

:happy:

 

Awesome