Z AXIS MOTOR (W/ CAPS & ACME SCREW)
Motor raises/lowers the torch holder. Includes acme screw. Replace if weak (eg. filled with plasma dust and worn screw/nut after screw guard lost), shorted out, or moves in a random direction (caused by burned out coil). Prior to replacing motor, verify that holder slides up and down easily through wheels; verify burned out coil or short circuit by checking motor resistance.