HP Latex 850 Printer - Manual (Page 7)

2. When both differential hubs are correctly positioned, use the Allen key to tighten the screws and
secure them in place. If a differential hub is loose, the substrate could become skewed during
printing.
TIP: You should tighten the screw until the washer touches the bolt. If you can still see the yellow
spring, tighten the screw further.
3. At each end of the spindle, unscrew and remove the outer parts of the hub, using the Allen key.
4. Unscrew and remove the inner part of each hub.
ENWW Load rolls onto the spindle 3
Dual-r
oll spindle