Had to reference this site for similar assembly instructions - http://airtripper.com/367/3d-printer-surgery-4-extruder-upgrade-part-3/
It should look just like this one when complete.
When I assembled mine if found a potential issue - seems like my shaft is too short because the small bearing shown in other models is pressed onto the shaft - I just moved the pinch bearing further down the shaft so that it is in line with the lever with bearing to pinch the filament.
Hopefully will work.
Here is a youtube video of how HOPEFULLY it will work - video by the creator -
received tracking number to screw kit by TrDprinting - PRETTY DARN FAST - on a saturday!!
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