Description of Issue

A clicking sound is heard from the machine during homing or carving, especially when the Y truck is moving to the right of the machine.  The clicking can also precede a Y/Z stall or even a skipping in the raster pattern.

Possible Causes

Causes include: a loose Y/Z belt tensioner, a frozen Y/Z belt pulley, or a loose Y/Z belt clamp on the back of the Y-truck/Z-truck.  The situation can be revealed or made worse by high force operations like vector cuts with large bits.

Troubleshooting Steps

  1. Verify that the Y/Z pulleys are free to rotate. Use compressed air and WD40 to get them rotating freely if needed.
  2. Check tension on the Y and Z belts.  A loose belt can lead to skipping which may cause this sound, especially on the Y axis.  Loosen the Y-belt tension bracket screw, re-tension the belt, and re-tighten the screw.  Also make sure that there is a star shaped lock washer under the head of the screw to lock the tension bracket in place.
  3. Rapidly move the trucks back and forth seeing if you can get the belt to skip on the pulley or within the clamp that holds the belt onto the back of the truck.
  4. If none of the above steps solves the issue consult with CarveWright Service.