Dell C5765DN MFP Color Laser Printer - Manual (Page 239)

Replacing Consumables
239
7
Align the hole of the new separator roller with
the axle.
8
Slide the separator roller along the axle so the
protrusions fit completely into the slots and the
roller hook reseats into the groove on the axle.
9
Repeat steps 7 and 8 to install the other separator roller.
10
Put the chute upper feed back in place.
11
Replace the tray into the machine.