Mackmann Posted June 1, 2011 Share Posted June 1, 2011 I got a 2006 CV713 tri/axle dump truck with 171k on it. When i go to hit the brakes i can hear an air leak coming from the tandems somewhere. It only leaks for 3-5 secs. Then when it stops leaking the brakes come on hard. I took it down to Harvey mack and they replaced the Anti Compounding valve. When i left the dealership all seemed good. But now its back to the some old BS. If you pull down the trolley brake it doesn't do anything. Maybe it works a very little. I mean i still have brakes but i can tell something is not right.Its not a brake chamber i know that. I'm almost 100% sure its a valve. Anyone ever have this problem before?? Please help thanks. Quote My Facebook. Feel free to add me as a friend. Just tell me your from BMT. Link to comment Share on other sites More sharing options...
mowerman Posted June 1, 2011 Share Posted June 1, 2011 its sounds like your three way valve,very common problem,they go out quite a bit,,get plugged with dirt,and stick...pretty inexpensive...bob Quote Link to comment Share on other sites More sharing options...
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