¶ Mars 5 Ultra Replace Lead Screw Nut
¶ Tools and materials needs to prepare
2.5 mm allen wrench
3.0 mm allen wrench
cotton swabs
lubricant
¶ Reference Vidio
¶ Operation Steps
1.Turn off the 3D printer and unplug the power cord.
2.Place the 3D printer on its side and loosen four screws securing the Z-axis top plate using a 3.0 mm Allen wrench, then remove the Z-axis top plate.
3.Loosen two screws securing the lead screw nut using a 2.5 mm Allen wrench.
4.Hold the lead screw with one hand and turn the lead screw nut with the other, retrieving the lead screw nut from the top of the lead screw.
5.Retrieve the new lead screw nut, hold the lead screw with one hand, and turn the lead screw nut with the other, installing the lead screw nut onto the top of the lead screw.
6. Screw it approximately 1 cm from the top of the lead screw.
7.Push the connecting arm to align the screw holes with the lead screw nut, and using a 2.5 mm Allen wrench, screw in three-quarters of the two securing screws. Note: These two screws should not be tightened yet; please tighten them later.
8.Retrieve the top plate, align it with the screw holes, place it in the mounting position, and tighten four securing screws using a 3.0 mm Allen wrench.
9.Turn on the power and select "Tools-Manual-50 mm" and click to lower the Z-axis on the touchscreen.
10.After the Z-axis descends to the bottom, using a 2.5 mm Allen wrench, gradually tighten the two screws securing the lead screw nut.
11.Apply lubricant to the upper and lower parts of the lead screw and use a cotton swab to spread the lubricant evenly.
12.Select "Home" to perform a homing operation, and the printer will move upward to the home position on the touchscreen.
13.Click the down button again to observe normal Z-axis movement, and the 3D printer is now ready for use.
