Denford Software & Machines

I have the link to take the z brake and motor appart. Mine are already together but now I need to put them into the machine. Do I need to open the back of the machine to do this?

Thanks

There are 6 wires on the Stepper motor/Z-brake unit:
Stepper motor – black, orange, red, yellow
Z-Brake – 2 black wires, mark these leads for the Z-brake.

Unbolt and remove the “cabinet” from the machine base (You may need to slide a utility knife blade between the cabinet and base to cut through the foam dust seal). Remove the back cover of the machine and the covers off the gray wire looms. The foam tape and adhesive can be removed with a mild solvent like Lighter Fluid or Naptha, anything stronger will remove the paint.

Carefully work the Z-axis stepper motor and Z-Brake wire leads out of the wire looms and mark the Z-axis output connector (TB12) for the proper wire configuration.
Mark the Z-Brake leads to their connections.

It is best to use the wires on the new unit and feed the wires through the grey or black nylon mesh wire sleeve that is on the machine, along with the Z-home switch wires. Working with 1 wire at a time cut the wire leads from the old stepper motor and solder them to the new stepper motor leads (red-to-red, yellow-to-yellow, orange-to-orange, black-to-black). Cut the wires to the Z-Brake and solder them to the new Z-Brake wire leads. Use heat shrink tubing to insulate each of the solder joints.
Use the original wires to gently pull the new wire leads thru the nylon mesh wire sleeve. Remove any tape or tubing from the end of this sleeve to help let the wire through.

Unbolt the stepper motor/brake unit from the Z-axis, loosen the clamp screw on the coupler for the stepper motor shaft. Remove the stepper motor.

Install the new stepper motor/ Z-Brake assembly. Bolt in place then tighten the coupler clamp screw to the stepper motor shaft.

Secure the wires at the stepper motor to keep the wires from flexing at the motor/brake connections. Keep the wires long enough to move with the spindle assembly.

Work the wire leads into the wire looms and cut the excess wire off. Don’t make the wires to short, make them a couple inches longer to ease installation. Strip the insulation off the ends of the wires and install them in their connectors.

Place the cabinet back on the machine base and test the machine.

After testing the machine, carefully work the wires back into the wire looms and reinstall the covers, bolt the back cover of the machine back on.
Use foam insulation tape (1/4” x 3/8”) for a dust seal for the Cabinet. Leave the paper on the face of the tape to make removal of the cabinet easier and bolt the cabinet in place.