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  1. #1
    New Member
    Join Date
    May 2013
    Posts
    10
    Location
    Wilmot, N.H.
    Tractor
    McCormick Deering OS4

    Default Over Center clutch adjustment

    Hi everyone, some of you may have read my previous post a while ago about a 1947 McCormick Deering Os4 with a clutch problem. I did get it unceased by putting the tractor in 2nd, and kept hitting the brakes. Some of the time, when i put the lever foward, it will grab. Which is good! But, I need it to grab sooner. Because when i pull it back to release it, it releases at about half way back which is too soon. So my question is, where is the adjustment?

  2. #2
    Veteran Member
    Join Date
    Jan 2009
    Posts
    2,244
    Location
    Carroll, Ohio
    Tractor
    Massey 180 Diesel

    Default Re: Over Center clutch adjustment

    Hopefully this will help. Look for section 193, bottom paragraph, lower center. And bottom right picture shows the adjusting ring, and ring lock.

    This page should print out full size, so you can take it to the shop.

    Click on image twice to make it large enough to read...


    -adjust-oc-clutch-jpg

  3. #3
    New Member
    Join Date
    May 2013
    Posts
    10
    Location
    Wilmot, N.H.
    Tractor
    McCormick Deering OS4

    Default Re: Over Center clutch adjustment

    Thanks, I have taken both the top cover and bottom cover off before, but I never knew what that plate was for adjustment. When I took off that nut that holds the clip on, the bolt threads stripped, and the bolt itself doesn't stay still, I can move it by hand. I think i have to take the plate competely off, and get a new bolt it there. Thanks again, that is exactly what I have.

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