cxn613 Posted May 28, 2014 Share Posted May 28, 2014 Air going to service and parking sides of chamber even with brakes set. Any thoughts thanks Quote Link to comment https://www.bigmacktrucks.com/topic/35890-dm-brakes/ Share on other sites More sharing options...
220cummins Posted May 29, 2014 Share Posted May 29, 2014 bad chamber? or bad relay? Quote Link to comment https://www.bigmacktrucks.com/topic/35890-dm-brakes/#findComment-247221 Share on other sites More sharing options...
gearhead204 Posted May 29, 2014 Share Posted May 29, 2014 brakes set and air to both ports = several problems my guess is hand valve (trailer brakes) partly applied and a bad air can to test a remove the application air lines at each wheel with dual chamber cans air would be coming out of the lines if trailer app. valve is applied. please post findings so we can figure out whats wrong Quote Link to comment https://www.bigmacktrucks.com/topic/35890-dm-brakes/#findComment-247254 Share on other sites More sharing options...
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