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  1. #1
    New Member
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    Apr 2007
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    Clinton, SC
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    Farm Pro 2420

    Default Flat head screws on 3-point hitch

    My Farm Pro 2420/Jinma 204 has two screws on the top of the 3-point hitch, one on each side of the housing where the lift arms go in. They are leaking fluid when the tractor is on. Is there a purpose for these? And, can I take them out, clean and put sealant on them to stop the leaking??

  2. #2
    Super Member greg_g's Avatar
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    Dec 2003
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    6,028
    Location
    Western Kentucky
    Tractor
    JD3720 Cab, 300X loader with 4-in-1 bucket

    Default Re: Flat head screws on 3-point hitch

    I've never actually been sure what they're for, and the parts book is no help. The only SWAG I ever came up with was that they were set screws to hold the upper arms in a fixed position while it was transported via crate. Mine never leaked, so I just forgot about them after a while. But I guess if they did, I'd just (sparingly) use some pipe thread compound. Careful not to let any get into the hydraulic fluid though.

    That said, they're awful high on the housing to "leak" under normal operation. Is the hydraulic vent plugged by any chance? Overfilled?

    //greg//
    USN (Ret)
    Former Chinese tractor owner (x4)
    Current John Deere owner

  3. #3
    Silver Member
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    Jul 2004
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    135
    Location
    Lady Lake, Fl.
    Tractor
    Jinma 284

    Default Re: Flat head screws on 3-point hitch

    Mine leaked and it was because of the vent being stopped up as Greg said. The vent is the bent pipe on top of the refill, check fluid plug. I blew it out and the leaking oil stopped.

  4. #4
    Advertiser
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    SE VA. NC State Line
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    Jinma Dealer / Importer. General Tractor Repair Shop.

    Default Re: Flat head screws on 3-point hitch

    Quote Originally Posted by bigcountry1009
    My Farm Pro 2420/Jinma 204 has two screws on the top of the 3-point hitch, one on each side of the housing where the lift arms go in. They are leaking fluid when the tractor is on. Is there a purpose for these? And, can I take them out, clean and put sealant on them to stop the leaking??
    If it is the two screws I think you are talking about ??

    There purpose is to hold the lift arm bushings in place.

    To confirm my thought... remove the screw and it should have a tip/point on the end of it.

    They are shown in the parts book I have.

    If oil is coming out around those screws .... pressure is building inside the lift box or it may be over filled.

    Ronald
    Ranch Hand Supply

  5. #5
    Platinum Member
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    May 2005
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    977

    Default Re: Flat head screws on 3-point hitch

    Yeah mine did/does leak a tiny bit there to,,mine were just loose,piss poor design,,,still weeps slightly when it gets hot,,,,my vent was not plugged and hydro was not overfull,,,just tighten them real good,,and if thats the only leak you got,man you be doing good! thingy

  6. #6
    New Member
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    Apr 2007
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    Location
    Clinton, SC
    Tractor
    Farm Pro 2420

    Default Re: Flat head screws on 3-point hitch

    Good deal, I'll put wrap em with some thread tape and put the He-man torque on em, see what happens.

  7. #7
    Platinum Member
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    May 2005
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    977

    Default Re: Flat head screws on 3-point hitch

    Be real carefull with that teflon tape on hydro stuff,piece gets in it might plug up something,,maybe that loctight stuff might be better,let it about half dry maybe? thingy

  8. #8
    Super Member greg_g's Avatar
    Join Date
    Dec 2003
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    6,028
    Location
    Western Kentucky
    Tractor
    JD3720 Cab, 300X loader with 4-in-1 bucket

    Default Re: Flat head screws on 3-point hitch

    Quote Originally Posted by bigcountry1009
    Good deal, I'll put wrap em with some thread tape and put the He-man torque on em, see what happens.
    I specifically identified pipe thread compound as opposed to teflon tape. And note too that I cautioned about getting any into the hydraulic fluid. Too many folks have found tape clogging chokepoints in their hydraulic and lubrication systems. Don't be tempted to use anything that will sieze/freeze/lock the threads either. Soon as you do, there'll come a day when you actually want to take them out for some legitimate reason.

    //greg//
    USN (Ret)
    Former Chinese tractor owner (x4)
    Current John Deere owner

  9. #9
    Platinum Member
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    May 2005
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    977

    Default Re: Flat head screws on 3-point hitch

    You can break that lock tight stuff loose,,probably won't work anyways with all the oil,,all he's gotta do is put a little man power with a screw driver anyways,,,and check them every now and than,like I said,piss poor design,,but no big deal,,mines been oozing for 4 years now,,,thingy

  10. #10
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    Jinma Dealer / Importer. General Tractor Repair Shop.

    Default Re: Flat head screws on 3-point hitch

    From post #4

    If it is just weeping hyd oil and keeping it damp ??/ I would not be concerned.

    The ends of thoses scews when tighten all the way down will rub the lift shaft.

    I recommend to run the screw down and back off 1/4 turn.

    Ronald
    Ranch Hand Supply

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