To assemble the motor block, you will need all these parts.
Detailled video :
Begin with the Nema 17 :
Then turn the full bloc and place the bearing holder :
Continue with the pulley :
Turn back the motor block to install the shock absorber :
On this position, follow with the main predrilled structure bar and install the bolt to fix the motor block on this bar :
You dont need to thighten the bolt hard, it is only plastic parts !
Continue with the plate holder fixing the bearing :
And insert it on the motor bearing holder :
If you have it, you can put on the plate some Dycem which work as a non slip surface :