Anybody out there can help me I have issue with push in and out parking brake valve.the problem is when in park mode with yellow valve out I step on brakes and air comes from valve.when valve is pushed in and brakes are release I step on brakes and no air leak.I thought it might have been bad valve but I replace this weekend with new one and it does the same thing.feed backs would be appreciated,its a 1992 kW w900.thxs
parking brake dash air valve
Discussion in 'Trucks [ Eighteen Wheelers ]' started by fl spanish guy, Apr 27, 2015.