New S3 XL. Have been playing around and learning on some foam.
My Z-Axis is will only move downward ~30mm from 0 (limit) position. If you jog it from 0 downward (negative), it will stop at ~30mm. If you keep jogging it, the motor will still move in the increments sent, but there will be not movement of the axis: stays stuck at 30mm. On occasion, after about 5 seconds of continual Z- nudges downward, it sometimes will move past this point about 20mm more, then get stuck again. Moving Z+ is no problem. Works fine.
I checked the belts and pullies for obstructions: nothing. I verified the movement of Z axis is free and clear by hand with the power turned off. It really seems to be the motor. I also hear some clicking noises from inside the motor when moving Z manually by hand.
Is there a way to tell if the motor is pooched ? Best way to submit this to carbide support ? email@example.com ?
Have you checked that the set screw on the belt pulley is tightened against the flat spot of the shaft? My pre-assembled carriages had tight set screws, but they were not screwed against the flat spot. This resulted in things kinda-sorta mostly working in a “gremlins in there” way, with occasional slippage which looked kind of like the motors being weak.
@mpfreivald Exactly. I figured out that it was the pinion set screws on the motor shaft: they were really loose (and no loctite!!!) So that’s a 14 h job down the toilet. Shout out to Union9: Throw some loctite on that shizzle.