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  1. #1
    New Member
    Join Date
    Jul 2011
    Posts
    7
    Tractor
    Oliver S 77

    Default Mc Cormick loader on a S77 Oliver

    Hey Guys, I have an old Mc Cormick front end loader on my Oliver S77 and it won't raise it more then
    2ft. off the ground. I checked the hydraulic pressure on the left and right side of the system. The pressure is less than 800 lbs. on each side. I put all new
    seals in the cylinders and there is no cylinder to dump the bucket, it's a trip lever. How much hydraulic
    pressure is required to operate an empty loader. The right side operates the 3 point hitch and it works
    fine. Any suggestions would be appreciated. Thanks George

  2. #2
    Silver Member dkhntr04's Avatar
    Join Date
    Sep 2010
    Posts
    169
    Location
    Northern MN
    Tractor
    Deere 3720 Cab

    Default Re: Mc Cormick loader on a S77 Oliver

    Does your tractor have enough hydraulic fluid capacity? My guess is that you might be using up your hydraulic fluid. I've seen that problem with a Farmall H which was fixed by adding an extra reservoir. 800 psi would be plenty to raise an empty loader.

  3. #3
    New Member
    Join Date
    Jul 2011
    Posts
    7
    Tractor
    Oliver S 77

    Default Re: Mc Cormick loader on a S77 Oliver

    Hi Dk. Thanks for your suggestion about adding an extra hydraulic tank for my loader.
    I'll try it when the snow melts. George

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