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  1. #1
    Bronze Member
    Join Date
    Aug 2012
    grand tracadie PE
    '05 NH TN75DA

    Default old john deere post hole digger

    I bought a used john deere post hole digger and it came with a PTO shaft with a large spring wrapped around the end that goes onto the tractor. Also it has a shear bolt assembly with 4 holes, in one side the holes are almost 3/4" and the other side approx 3/8", what is the idea with this, the head of a 3/8" bolt will go through the larger hole, I attached a picture. I was thinking of drill 2 holes opposite each other for shear bolts. How do I determine the size, should I start with 1/4" or 5/16". The flanges of the shear assembly are pretty sloppy so that is why I think I need 2 bolts. The universal joint has no needle bearings and looks as though it would be impossible to ever remove, can they be changed
    Attached Thumbnails Attached Thumbnails old john deere post hole digger-dscf8082-1-jpg  

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