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  • D bore lower kit

    What is the proper install procedure for a lower accelerator pulley/shaft/etc... the d-bore kit. Our machines all had the old (non bolt style) shafts, when we switch to D-bore the bearings wander in and out of the fork (slide side to side) is it something wrong with how its installed? or is it a bad/worn/bent "fork"

  • #2
    Re: D bore lower kit

    Put the bearing in from the inside of the yolk........thenthe retaining ring will not allow them to move out.......the steel spacers will not allow them to move in.

    JK

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    • #3
      Re: D bore lower kit

      Lately I've had probs with the D bore bearings
      making loud "clicking" noise. even ordered bearings from another company, same thing. I decided to go old school and install non bolt on shaft, bearings with race built in and locking collars. This style has been around for a long long time and it works great.

      ----------------------------------------------
      remenber: don't make a mountain out of a molehill.

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      • #4
        Re: D bore lower kit

        Originally posted by 82/70 king:
        Put the bearing in from the inside of the yolk........thenthe retaining ring will not allow them to move out.......the steel spacers will not allow them to move in.

        JK
        <font size="2" face="Verdana, Helvetica, sans-serif">Unless the pulley hub is worn or the yoke is spread a little wide. Then the bearings will move around a little.

        In this case.... you can use the washer that goes under the distributor clutch nut as a shim. Place them between the stepped spacer and the pulley hub.
        -- Larry

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        • #5
          Re: D bore lower kit

          Legend, thats what I needed... I'm pretty sure the yoke is spread a little wide... I had evertything set up 4 times, just as it should be... but it (the bearing) seems to wander.... When I took this one apart it was a mess, they had thrown washers in there instead of the stepped spacer, they had somethings way OVER tight, and others too loose.... Just wish we had another yoke around so I could tell for sure... Thanks guys - oh, and.... I dont know what style is older... but some of our pulley hubs are cast with the rest of the pulley, and others have a bushing that was press fit into them (with 2 holes drilled in them for the set screws/bolts/whatever you want to call them... Clearly some of these are REALLY old. Anyone else seen these hubs? We had one go because the bushing wore down too far... pulley would wobble even with everything tight

          Comment


          • #6
            Re: D bore lower kit

            Originally posted by TheLegend:
            </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by 82/70 king:
            Put the bearing in from the inside of the yolk........thenthe retaining ring will not allow them to move out.......the steel spacers will not allow them to move in.

            JK
            <font size="2" face="Verdana, Helvetica, sans-serif">Unless the pulley hub is worn or the yoke is spread a little wide. Then the bearings will move around a little.

            In this case.... you can use the washer that goes under the distributor clutch nut as a shim. Place them between the stepped spacer and the pulley hub.
            </font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I am using two spring washers for that for many years. I'm using the washer that is located in the index gear on the distributor head of a 30 machine(spring washer = 000-026-855).

            Martin
            So it goes.

            Comment


            • #7
              Re: D bore lower kit

              Originally posted by Adam:
              Legend, thats what I needed... I'm pretty sure the yoke is spread a little wide... I had evertything set up 4 times, just as it should be... but it (the bearing) seems to wander.... When I took this one apart it was a mess, they had thrown washers in there instead of the stepped spacer, they had somethings way OVER tight, and others too loose.... Just wish we had another yoke around so I could tell for sure... Thanks guys - oh, and.... I dont know what style is older... but some of our pulley hubs are cast with the rest of the pulley, and others have a bushing that was press fit into them (with 2 holes drilled in them for the set screws/bolts/whatever you want to call them... Clearly some of these are REALLY old. Anyone else seen these hubs? We had one go because the bushing wore down too far... pulley would wobble even with everything tight
              <font size="2" face="Verdana, Helvetica, sans-serif">Never seen a pulley with a center bushing. Could be they had worn original shaft holes and were reworked somehow.

              If the center hole isn't worn too bad you can get away with it by adjusting the set screws to eliminated the wobble. But this is only advisable for the top yoke assembly. I never did it on the lower one unless I had no other choice at the time.
              -- Larry

              Comment


              • #8
                Re: D bore lower kit

                nope, this is no mod... its an original part because all of our originals are this way... thankfully only one has been junk so far... heh

                Comment

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