Will Posted July 20, 2023 Share Posted July 20, 2023 gday guys will here 1998 mack trident, i have full air and push my yellow button in and it leakes out of the exhaust part of the rear valve that services the rear boosters. i push the brake peddle in and the leak goes away and air builds up to normal again. i have pulled the service linesof each booster and no air is coming out when maxis are released so boosters are good. any idea where i should start looking now? thankyou will Quote Link to comment https://www.bigmacktrucks.com/topic/73068-maxi-brakes/ Share on other sites More sharing options...
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