Ricoh PD-D1 Field Service Manual page 142

4. Replacement and Adjustment
• Rear covers ( p.74 "Rear Cover")
1. Check the recess in the drum drive gear meets the positioning hole [A] in the bracket, as shown.
2. Check whether the hole [B] in the pump drive gear is aligned with the hole [C] in the air pump unit
bracket.
3. If the alignment is incorrect, remove the air pump unit and re-position the gear.
140