NWA3D A31 User Manual
c. Re-check the tension of the gantry by rotating the leadscrew. The gantry
should move up and down smoothly, and there should be no wobble,
play, or “chatter” on the right side of the gantry.
3. Adjust the tension of the nozzle assembly on the X-axis on the gantry frame.
a. Check the tension of the nozzle assembly. Hold the mounting bracket
behind the nozzle and try to wiggle it back and forth. If the nozzle
assembly wobbles on the X-axis frame, it is too loose.
b. To tighten the nozzle assembly, rotate the one eccentric nut that connects
the wheel to the bottom of the nozzle assembly. Use the open-end wrench
to rotate the nut slightly—a quarter turn is usually enough—until the
wheel is tight against the X-axis frame and the assembly no longer
wobbles.
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