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deck lift shaft problem


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  • deck lift shaft problem

    i have a lane that was not picking up standing pins.long story short. i found that the 7 pin side deck lift shaft bearing was laying in the y- switch,the bolt was broken off,the bearing was broken in two and the deck lift shaft is all cockeyed. ive never replaced this bearing or the deck lift shaft before. could anyone please give me some direction on how to do this. thanks. jaysen

  • #2
    Re: deck lift shaft problem

    It's a pretty simple job, just awkward with such a big piece. A second set of hands helps.

    Set the deck at 270, setting new pins, and support it using some 4X4 chunks or something.

    Unplug main power and lock out your cord.

    Remove the giant rake return spring tube using the appropriate length of allthread and accompanying nuts/washers. This is very important as the D/L shaft will want to knock you in the jaw if the spring remains in place.

    Remove the lift pin at the D/L shaft ears by pulling the 10 side spirol ring and sliding the pin out the 7 side.

    Disconnect detector rod and restricted drop bracketry for clearance.You're looking to make space so these areas are not damaged while you wrestle with the D/L shaft.

    Remove the four screws at the bearing caps at the end of the D/L shaft arms to separate the deck assembly.

    Remove remaining D/L shaft mounting screw and wrestle that big bastard outta there.

    Depending on how out of whack everything is, you may want to install your spare (if available) or compare the fallen one to a good machine for damage.

    Good luck.


    • #3
      Re: deck lift shaft problem

      sounds like i did more than needed. i pulled the entire deck out and got the lift shaft out. now all i have to do is figure out how to replace the bearings. do they press in or just slide in? i havent looked real close yet.


      • #4
        Re: deck lift shaft problem

        I always roll the moving deck out of the way, up the lane to remove a deck shaft. I use a four wheeled dolly to set the deck on then flip up the deck light to clear. Thats why those extra holes are in the light bar support links.

        The bearings are whats called a slip press fit. sometimes they come out easy and sometimes they don't. Plan on replacing both bearings, bearing studs and bolts. This is no time to get cheap!!!!.

        If you can't slide the bearings out get a piece of 5/8" ready rod and a nut to go with it. Thread it in from the out side, put a plate on the rod with the nut behind it and knock it out. If the bearing stud comes out alone get a piece of pipe big enough to slide in from the other side and hammer it out. Replace all bearings,bearing studs and bolts.

        If the shaft is bent, off to the machine shop it goes for straightening and reinforcing. Sometime's it's better to junk it and buy a new one.

        Those that have Jap setters just live for the day to pull another deck shaft.
        BEER: It's not just for breakfast anymore.


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