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kennyd · 07-02-2009, 06:38 PM

Just clean everything good, something in that valve is blocking the return flow from the 3PH piston. Have you tried lowering it with the valve removed? Be careful though as fluid may shoot out-as well as whatever is blocking it.

If this does not solve your problem, then you may have a more serious problem either the rockshaft valve or the piston assembly itself.

This may be a good time to invest in a FSM (Factory Service Manual) on CD that sells for under $100.

07-02-2009, 06:38 PM	#7 (permalink)
kennyd Super Member Join Date: Jul 2003 Location: Westminster, MD Posts: 6,002	Re: JD HYDRAULIC PROBLEM Just clean everything good, something in that valve is blocking the return flow from the 3PH piston. Have you tried lowering it with the valve removed? Be careful though as fluid may shoot out-as well as whatever is blocking it. If this does not solve your problem, then you may have a more serious problem either the rockshaft valve or the piston assembly itself. This may be a good time to invest in a FSM (Factory Service Manual) on CD that sells for under $100. __________________ JD 4110HST FEL, 60" MMM, 60" Rear Blade, Ballast Box, I-Match, #380 Snow Plow, FEL Forks, Goossen 3PH Chipper/Shredder, Markham LD-48 Grapple and much more "stuff" JD 4x2 Turf Gator Some of my projects/adventures are posted in my Picassa Web album.