VLS Service Manual - REV2015.04
Table of Contents
Z-Axis
Page | 64
Z-Axis
Lead Screw
NOTE: The following instruction describes removing both lead screws. If removing only one lead screw,
disregard the instructions for the other lead screw.
1. Remove the assembly you will be replacing the lead screw on by following the steps outlined in the Left
Z-Axis Assembly or Right Z-Axis Assembly instructions.
2. Remove the 2 socket head screws and washers holding each bearing block in place.
3. Slide the lead screw from the assembly.
4. Remove the top bearing block.
8. Remove the 3 socket head screws, 3 lock washers, and 3 flat washers holding the Right Z-Axis
Assembly in place.
9. Remove the Right Z-Axis assembly from the system.
10. Installation is opposite of removal.
NOTE: When installing the Right Z-Axis assembly ensure that the lead screw nuts is roughly aligned with the
Left Z-Axis Assembly lead screw nuts. Then follow the Z-Axis leveling procedure.
NOTE: If the stage appears to be binding and the Z-Axis leveling procedure has been completed, loosen the
screws holding the bearings blocks in position. Move the stage all the way to the top and all the way to the
bottom. Re-tighten the screws and test again.
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