DJG

Air leaking from relay valve

1 post in this topic

Need some help a friend gave me a 1985 Mack dump truck to fix after he changed out a lot air valves the problem started with a bad brake chamber he replaced it with a new one and he told then air started leaking from the back left side relay valve when brakes are released so I took all the valves apart they all ok air is getting to all of them. it is a  MODEL DM685S

Thanks Dan

Vin #1M2B120C1FA055812

 

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Edited by DJG
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