Installation of the new Z-axis:
Step 1: Put the new Z-axis in position inside the printer.
Step 2: Turn the new Z-axis clockwise to screw in the bearing sleeve.
Step 3: Tighten the 2 screws on the platform that is attached to the motor.
Step 4: Attach the motor connector and LCD ribbon cable.
Step 5: Attach the LED connector and fan connector to the mainboard.
Step 6: Install the bottom case.
Step 7: Turn the printer upright.