Zoom Boom 8044, tilt cylinder slow to function! (10 second delay)

lundi 31 mars 2014

Working on a Zoom Boom 8044 and having some issues with the tilt function/compensator.



When you push the button on the joystick and push/pull on it, it takes about 10 seconds for the forks to actually tilt up or down. All other functions are immediate when using the joystick, the only other related issues is that often the forks don't compensate during boom raising and lowering.



I've done some pressure testing and not quite sure how to chase this one down. I've got 300 psi pilot pressure going to the valve body from the cab. I took a pressure reading at the cylinder and it gets almost no pressure until about 10 seconds after the joystick is moved, so it seems like something is causing a delay in the valve itself. I pulled it out and it looks fine. Not really sure how to keep chasing this issue.



If I leave the forks up over night, they don't fall so I'm going under the idea that it isn't piston seal related.



Anyone have any thoughts?




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