Grab the cleaning kit. Located on the shelf in the 3d printer cabinet.
Use the Z Axis cleaning device in the kit. If a replacement is needed: https://www.printables.com/model/229145-z-axis-screw-cleaning-device
Drip some Isopropyl Alcohol on a paper towel.
Wrap the paper towel around the threaded rod.
Clip the Z Axis cleaning device around the paper towel and threaded rod.
Move the gantry up and down using the Z Axis Move option in the settings menu.
Be careful, the Prusa printers do not stop automatically at the top of travel, so approach the top with caution.
Apply a dime sized amount of Lithium Grease to a paper towel and wipe up and down the Z Axis threaded rod.
Move the gantry all the way up and all the way down using the Z Axis Move option (Go to settings in the menu, then move axis, z axis).
Repeat the last two steps if the grooves of the threaded rod are not covered.
Wipe off any excess grease.
Turn off the printer.
Clean the round linear rails of the X/Y/Z axis with a paper towel and alcohol.
Apply a small amount of 3 in 1 oil to the rails and move the guides across the oil.
Wipe any excess oil off.
Inspect the belts for tension, when picked like a guitar string, they should lightly 'twang'. If they are loose or very tight, file a maintenance report.
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