I just finished installing everything for the Z axis upgrade. Everything works but the Z up & down. I hear the motor but it’s not turning the lead screw. All the 4 screws on the collar are tight tight. I can turn the collar & screw with my fingers & raise & lower the carriage. The numbers on the readout change when I click the up & down arrows but that’s all.
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Make sure that the motor electrical plug connection at the electronics enclosure is fully seated.
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Everything is connected. & still sounds like it’s working but no movement, just the numbers.
Even though they seem tight, they should be tighter. If you can hear the move turning then it’s still loose.
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Not an electrical problem . It seems that the top two 5/64 hex screws were too much of a hassle to tighten for the person who assembled it.