Ricoh A163 Service Manual page 371

5. REPLACEMENT AND ADJUSTMENT
5.4 DRUM UNIT
5.4.2 DRUM REPLACEMENT
[F]
[A]
1. Remove the drum unit.
2. Remove the pulley [A] (1 C-ring).
3. Remove the 2 bearing holders [B] (2 screws each).
NOTE: Be careful not to scratch the drum with the pick-off pawls when
removing or reinstalling the drum.
4. Remove the drum [C] with the drum shaft.
5. Loosen the drum knob [D] by turning it clockwise as shown.
6. Remove the drum flange [E].
7. Replace the drum with new one.
NOTE: 1) When reinstalling the gear [F], make sure that the direction of the
projection of the gear is on the drum side.
2) When re-installing the bearing holders, make sure that the right
bearing holder [G] has two mylar seals [H] attached. The mylar seals
determine the position between the drum unit and copier side plate.
This also helps to ensure an even image density on the copy.
SM
[E]
[C]
[B]
5-1
DRUM UNIT
[D]
[B]
[H]
[G]
B047R539.WMF
B047/B048