Right side y axis motor is delayed compared to the left side. Loses zero point meaning when cutting it slides out of path by quite a lot. 1/16th to 1/8" out of path. The motor also makes a grinding noise from time to time. Had some difficulty trying to initialize the machine this morning. After two tries it initialized and found home with no problem. Belts are same or very similar in tightness per the video Carbide 3d put out. Any suggestions on how to fix this?
Possible causes are wiring, a connection issue, the stepper driver going out, or maybe (this is almost never the case) a bad stepper motor, or a mal-adjusted eccentric nut/V-wheel, a damaged belt or loose pulley, or a linear block/rail which needs lubrication.
Power down and check everything.
The stepper drivers can be checked by powering down, removing both Y-axis belts, putting a bit of tape on the pulleys so as to more easily see their rotation, then trying to initialize — the Z-axis should home normally, then the machine will try to home the X- and Y-axes — the X-axis should home normally, while the Y-axis motors should turn until they time out — do they turn evenly and in synch?
Power down and replace the Y-axis belts swapping them end-for-end and side-for-side.
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