Removal and Installation 6. Remove the Helical Gear. 7. Remove the 3 T-20 screws ( Type L ) that secure the Paper-Axis Motor Assembly to the Sideplate. 8. Remove the Paper-Axis Motor Assembly. NOTE When you replace the Paper- Axis Motor Assembly you must perform the following Service Calibrations: Accuracy ⇒ Page 5-14 . Printhead Alignment ⇒ User’s Guide. 8-106 HP DesignJet 5000 and 5500 Series Printers Service Manual