Canon imageRUNNER ADVANCE 4551i Service Manual page 268

6. Remove the Developing Contact Spring [1].
7. Remove the holder [1].
• 2 Screws [2]
• 1 Push-on Roller [3]
• 1 Bearing [4]
8. Remove the Blade Unit [1].
• 2 Screws [2]
[1]
2x
[3]
[2]
[4]
2x
[1]
255
[1]
[2]
4. Disassembly/Assembly