Creality Ender 3 Pro Assembly Instructions V1.0 27 www.rb42.blog
Step 10 - Top profile
1x (19) Top profile (2020)
4x M5x25 hex socket cap screw
Process
Position the (19) Top profile (2020) at the top of the Z-axis
vertical profiles (from step 1), paying particular attention to
the orientation of the 2020 profile making sure to have the
correct side facing in the upward direction as shown in
image.
Line up holes on either side of the (19) Top profile with the
threaded holes in the tops of the Z-axis uprights. Once
correctly lined up, fix the (top) profile into place with 4x
M5x25 hex socket cap screws, with 2 screws being used on
either end of the 2020 profile, torque firmly into place using
the M4 hex key (Allen key).