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  1. #1
    New Member
    Join Date
    Nov 2012
    Posts
    8
    Location
    Columbia, SC
    Tractor
    MF 1240

    Default Loader Valve Leak MF1240

    I have a small hydraulic leak coming from the back of the loader valve. Its coming out around the sleeve (item 17) in the diagram. I presume its coming out of the hole for items 12 and 13 and seaping out of the sleeve. This is for the up / down control portion of the valve. Its doesn't leak while raising but does leak while lowering or when stationary.

    -loadervalve-png
    The parts list and rest of the valve can be seen on the agcopartsbook 1246 loader - hydraulics cross valve assembly (1081221M91)

    Is it likely to be Item 7 the retainer seal thats causing the problem?

    Thanks

  2. #2
    Elite Member
    Join Date
    Jan 2010
    Posts
    2,574
    Location
    Northern, IL
    Tractor
    Branson 2400H

    Default Re: Loader Valve Leak MF1240

    Do they show any more seals on the spool? If no then I would suspect item 7 is leaking.
    Artificial Intelligence will never overcome natural stupidity.

    Branson 2400H MMM & FEL

    JD 112

    BX1850 gone but not forgotten

  3. #3
    New Member
    Join Date
    Nov 2012
    Posts
    8
    Location
    Columbia, SC
    Tractor
    MF 1240

    Default Re: Loader Valve Leak MF1240

    Quote Originally Posted by oldnslo View Post
    Do they show any more seals on the spool? If no then I would suspect item 7 is leaking.
    -valve-spool-png

    So I got around to working on the valve today. I managed to stop the leak but didn't replace the o-ring, item 10. I took item 26 off and was the puzzled by what I saw. I couldn't figure out how to get to the o-ring. I maniupulated the spool in and out and rotated it and was able to stop the leak. While I had the joystick removed I was able to lift the front end with boom function. After the spool started leaking it would always go into bypass when I'd try to lift the front end with the boom function. Curl function lifts the front end easily. After putting the joystick back together the boom spool now goes back into bypass when I try to lift the front end. So far the leak hasn't returned but I still don't have full power to the boom. I presume if I take the joystick loose again and manipulate the spool I can again get it working.

    Any suggestions? My buddy is going to stop by tomorrow and try and help me get it figured out.

    edit: guess I spoke too soon the leak is back but much less than before. About 1 drip per minute vs 1 per sec.
    edit fixed attachment
    Last edited by gezster; 06-26-2013 at 09:33 PM.

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