jwb79
New member
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- new martinsville/wv
our one m917 came in today because as soon as you release the air you hear the air blowing right into the breathers. the high in gear you get the more pours out until the valve trips. i was thinking it was the reg going bad. or needed rebuilt. our foreman said pull it and see what it might need. well i did and was careful with the shims i looked at the plunger in side and it is scared up pretty bad and the o-ring on it seemed worn. so i put an o-ring on put it back together and started it i had no blow by in the breather but it sounded like a wood pecker. so i need to pull back off any idea what the problem could be with the blow by and what could be the the sound i now let it make?