Adjust Rack and Pinion Preload

Background

The rack and pinion gear drive on the 1300PL uses a spring preload to allow the pinion gear to self adjust to compensate wear on the rack and reduce backlash. It is preset at the factory and will not need frequent adjustment.

Tools

• Allen Key Set

• Crescent Wrench

Y-Axis

1. Remove the motor belt cover over the servo motor pulley.

2. Remove the belt covers from both sides of the gantry.

3. Adjust the preload nut on the pinion mount assembly until the spring is compressed approximately 1/4" (6 mm) from its fully slack position.

4. Reinstall all belt covers and guards.

X-Axis+

1. Remove the motor cover on the X-axis carriage.

2. Locate and tighten the preload nut for the X motor assembly until the spring is compressed approximately 1/4" (6 mm) from its fully slack position.

3. Reinstall all belt covers and guards.