How To Replace The Small X Axis Belt Loop
The small X axis belt can sometimes become 'noisy' enough to warrant replacing. This is often mistaken for bearing noise.
This noise will sounds like squeaking, growling, like a bearing. But the bearings are likely okay and no lubrication is required here.
Here is what the noise typically sounds like:
This belt usually gets changed for that reason and not due to a critical failure. There is sometimes a spare belt in the toolbox that came with your laser.
Here is how to replace it:
Gauge the belt tension prior to beginning the process and take some pics of the assembly for reference, just in case
Loosen 4 motor mounting bolts:
The 4 bolts (A) are accessed from the bottom side
Adjust tension screw to remove belt:
Turn tension screw (B) counter-clockwise until there is enough slack to remove the belt
Install new belt:
Remove the old belt and replace with the new one
Tighten the tension adjustment screw:
Adjust the tension screw clockwise until the belt is properly tensioned
Tighten the 4 motor bolts:
Tighten the 4 motor screws to lock it down