Recent content by jdauto3720

  1. J

    SOME TECHNICAL ADVICE!! rockshaft valve removal

    Waycoolmarine, you were right. Inside the fitting feeding the rockshaft valve, I found a screen that filters the hydraulic fluid. The filter was dirty, however the was a hole busted through it. So I don't think that it is restricting the flow. But would it be possible or likely that maybe...
  2. J

    SOME TECHNICAL ADVICE!! rockshaft valve removal

    not exactly sure what you mean by roll pin, however here is a picture of the control valve, when i move the lift lever, all the linkages move and push the valve and compress that spring in the picture. is the 'roll pin' before the valve in sequence(if the pin was broken would the valve not...
  3. J

    SOME TECHNICAL ADVICE!! rockshaft valve removal

    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...
  4. J

    JD3720 hydraulic lift arms not lifting

    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...
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