help 753 graber claws problem

[kingmoon2142]

I have a Bobcat 753. I had a problem where the claws on the front would go up and then just fall back down as soon as you let go of the controls. The right claw was always the last to go up and the first to fall, but now the right claw is not going up at all. Any ideas on what's going on here? No leaks are seen, and everything looked dry. Also, when I take the bleed screw out, there is never any oil in the right claw's piston. Help would be greatly appreciated.

 

[reaperman]

Are you using the trigger to activate the hydros, then the sideways thumb switch for the up and down? The thumb switch reversed the hydro flow on attachments. If this isnt working, after turning on the aux control. Just use the thumb switch and not the trigger. I have had this happen but can't remember off hand which sequence between the trigger and thumb paddle makes it work correctly. But it's not an issue with the machines hydraulics, rather just which switches do what.