Prusa Research i3 MK3S+, Manual

Page: 28 / 144

2. Y-axis assembly
28 Original Prusa i3 MK3S+ kit assembly
STEP 25 Mounting the Y-rod-holder parts
Place the Y-carriage on a flat surface (table) with the bearings facing up.
Push the Y-rod-holder on the rod. Align the front surface of the plastic part with the
flat surface of the rod.
Check the correct position of the Y-rod-holder. The screw hole must be facing up
and on the "inner" side of the Y-carriage (see the picture).
Repeat these steps for the remaining Y-rod-holders.
STEP 26 Installing the Y-carriage
Take the Y-carriage including smooth rods with rod holders and place them in YZ-
frame. Make sure, that two bearings are on the left side (see the picture).
Secure each front holder with two M3x10 screws. Tighten both screws equally, but
not completely . We will tighten them fully later on.
Insert the M3x10 screw into the hole in each front holder and tighten it.
Take the second pair of the Y-rod-holders and secure them with M3x10 screws on
the rear plate (with shorter extrusions). Tighten both screws equally, but not
completely. We will tighten them fully later on.
Insert the M3x10 screw into the hole in each rear holder and tighten it.
In case the M3nS nuts keep falling out, please flip the frame upside down. Tighten
both printed parts and then return the frame to the previous position.