Page 235 - LEGO MINDSTORMS - Robotics Invention System-2 Projects

Robot 8 • The ULK (Useful LEGO Knowledge)

Bricks & Chips…
Adjusting the Lifter

ULK’s arm works only if the gear mesh between the Arm shaft and Lifter
shaft is adjusted properly. When the fingers are closed, and ULK’s arm is
raised to the full upright position, the 3x3 bent liftarms in the lifter should
almost touch the 1x8 plate attached to the bottom of the Arm Assembly
sub-assembly. If the arm cannot be raised to the full upright position, pull
out the lifter shaft gear, rotate it by one tooth counter-clockwise relative to
the arm shaft gear, and push it back in place.

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