Canon Color imageRUNNER C4580 Service Manual - page 403
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851
Chapter 10
10-76
9) Free the claw of the gear [1] at the front; then,
move the roller [3] to the rear, and remove the
gear [1] and the bearing [2].
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10) Remove the duplexing roller [1].
F-10-187
Points to Note When Attaching the Duplex
Roller
(1) Be sure that the longer side [A] of the D-cut in the
roller shaft [1] is toward the front.
F-10-188
(2) When attaching, be sure that the front tip of the
roller shaft is in contact with the grounding plate
[A].
F-10-189