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hello, so I've had a problem with my rockshaft arms not lifting 3ph. I'm starting to lean towards an issue with the rockshaft control valve, located behind a cover, whether its a linkage became disconnected, a valve is stuck open/closed, or a seal blew, etc. i want to take that cover off and...

hello, recently purchased a 08 JD 3720 tractor, i believe the 3 point hitch and pto was rarely ever used.(used for plowing snow). i pushed the rockshaft lever forward to drop the arms, they did drop but will not lift back up. all other hydraulics work fine. checked the fluid and it appears to be...