Cat Evolution
Litter-Robot: Fixing a Loose Motor Gear on Your Litter-Robot

Knowledge Base

Litter-Robot: Fixing a Loose Motor Gear on Your Litter-Robot

If your Litter-Robot is experiencing a free or loose spinning gear wheel, solid yellow light, and no globe movement, it maybe that the set screw that secures the gear wheel to the shaft of the motor has come loose. Below are the instructions to tighten the set screw. You will need a 3mm hex wrench or allen key.

Unplug your unit, remove the bonnet and globe, and locate the black gear wheel on the right side (control panel side) of your Robot. Press on the gear and see if it turns or rotates freely. It would normally be firm and unable to be turned if secured properly.  If it does rotate, please follow the instructions for tightening the set screw:

  1. Locate the shaft attached to the gear—this is where the set screw is located. If you can see the screw, skip to step 4.
  2. Replace the bonnet without the globe. Turn on the power and watch for the flat side to rotate into the position that enables you access to the set screw. The flat side of the shaft will be facing you. 
  3. Once aligned, turn off the power and unplug the unit. You can also press CYCLE to pause the rotation.
  4. Using a 3 mm hex wrench, tighten the set screw by turning it to the right.
  5. Attempt to move the gear with your fingers to assess if the screw is tightened enough. If the gear still moves, repeat step 4. When complete, before removing the bonnet, turn off if still on. 
  6. Replace the globe (and bonnet where applicable) back on the base, turn the power on, and press the Cycle button. If the unit completes the cycle and returns to Home with a blue light, your problem should be solved.

note if needed, addition of loctite to the set screw will stop future loosening.


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