BlackSmoke27 Posted February 1, 2012 Share Posted February 1, 2012 Looking for some help have a 96 ch613 and only when trailer brakes released and service brakes are applied the tractor protection valve leaks from exhaust port. We replaced valve and it still happens any ideas would be greatly appreciated Quote Link to comment https://www.bigmacktrucks.com/topic/23009-96-ch-tractor-protection-valve/ Share on other sites More sharing options...
BlackSmoke27 Posted February 2, 2012 Author Share Posted February 2, 2012 Should also mention with only tractor brakes released Like you were bobtailing the valve does not leak when service brakes ate applied Quote Link to comment https://www.bigmacktrucks.com/topic/23009-96-ch-tractor-protection-valve/#findComment-100677 Share on other sites More sharing options...
billythekid Posted March 1, 2012 Share Posted March 1, 2012 So it leaks when your tralier brakes are realesed and the tralier wont move like the brakes are on? it is feeding back from the tralier. i had the same problem on our t800 tractor so i cleaned the brake valves on the tralier and found a pice of crap in one of the valves try that if that is what your problem is with it. Quote Link to comment https://www.bigmacktrucks.com/topic/23009-96-ch-tractor-protection-valve/#findComment-104881 Share on other sites More sharing options...
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