so like an idiot i forgot the model # so heres some pictures. after getting the cylinder rebuilt now the multiplier doesn't work the company that rebuilt it could find anything wrong hand lapped the mating surface it would work for a short while then it would quit multiplying if you know what i mean it would just crunch with no real power. now i have a new machine the shop would like to fix it so i have another attachment .any idea's or experience with this would help.
it could be the plumbing on the shovel.npk uasally putsthe own plumbing on.There could be a valve close. On my jd 350 ther's a blue valve under the boom they replaced same as our 450 jd. awsome attachment though.