Canon imageRUNNER ADVANCE 4551i Service Manual page 213

4. Remove the ADF Pickup Roller Unit [1].
■ Removing the ADF Pickup Roller and the ADF Feed Roller
● Preparation
1. Remove the ADF Pickup Roller
● Procedure
CAUTION:
Be sure not to touch the ADF Pickup Roller and the ADF Feed Roller.
1. Remove the bushing [1] and the 2 Resin Rings [2] from the ADF Pickup Roller Unit.
2. Remove the Roller Holder (Front) [1] and the Parallel Pin [2].
Unit."Removing the ADF Pickup Roller Unit" on page 199
[1]
[2]
200
[1]
[2]
4. Disassembly/Assembly
[1]