As the title says, the left Z-motor on my KITTAZ is having problems. When I try to home the Z-axis, everything will work fine until the bottom inch of travel or so where the left motor starts to make horrible grinding noises yet the right motor works fine.
I’ve checked leveling - I manually adjust the rods to level the Z-axis and when I move it back and forth high above the bed, everything works fine. When I move the Z axis near the bed, the problems start where the right side will move properly but the left side won’t so it becomes unlevel.
I read that others had problems with the motor trying to move too quickly but if this were the case, it wouldn’t matter if the Z axis was moving in the upper part of its range or lower part of its range. I’ve also tried slowing the motor down to 10mm/s, still having the same problems.
Anybody have suggestions on where I can begin diagnosing the problem?