720 lift arms continued

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waynemags

Well-known member
Joined
Mar 29, 2011
Messages
76
ok last night i used machine to lift a wall on my new shop. when i tilt the pedal back for the lift arms it will fall when the pedal is tilted back untill i nget the pedal tilted completely back. as soon as i let off the arms fall. the tilt and aux work fine. really hoping that its something simple and not the control valve. looking at the diagrams that control valve looks like a real pain. is it possible to switch the lines on the control valve between the lift and aux circuit? any advice would be great.
 

skidsteer.ca

Well-known member
Joined
Jan 20, 2006
Messages
3,853
Waynemags, the load check portion of the valve (under a plug labled "load check" in the hydraulic diagram. There will be one for each section and of course you need to remove and clean the one in lift spool section. It may have a broken spring or some dirt caught in it. Or you may have to install a new check ball and spring, or ocasionally the seat needs re machined that the ball seats against.
Skidsteer.ca
 

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