rjoffrion
New member
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- Location
- Red Springs NC
I have an air brake issue maybe you guys can help. I have a M1079A1 that when I push the parking brake button in to release the brakes it vents air out the vent port in the middle of the cab behind the heater unit down to the grill.. I have checked cleaned or replaced all the two way check valves, all the valves in the back on the frame rail, including replace the brake pedal and parking brake button assembly. Im stuck and the truck Is in the bay and wont move.. Any help would be great.