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

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