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Chapter 9 / Motor and Lead Screw Installation


          Also install a bearing block on the outside of the up righ t opposite
           the motor end (see Figure 9. 19).

                                                                            Figure 9.19
                                                                            End of travel bearing
                                                                            block.





























          I used self- tapping screw s to hold the bearing blocks in place. You
          w ill need to move the acme screw at eit her end to find a po sition
          that allows the screw to turn easily. I started this qu est by check-
          ing the dista nce from the top rail to th e top of the screw at the nut
          (see Figure 9 .20) and mad e the ends of the screw at the in side of
          the uprigh ts the same. but it still took a w hile to get it properly
          aligned.


















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