Ricoh FT5580 Service Manual page 221

5. From the sorter front side, release the belt tightener bracket [G] (1 screw).
6. Remove the sponge roller drive pulley [H] (1 Allen screw).
7. Remove the roller bearings [I] from the front and the rear of the roller shaft.
8. Replace the sponge roller [J].
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1 Feb. '88