Ricoh SP 8400DN Field Service Manual page 1821

12. Disconnect the second sensor.
Reinstallation
1. Set the long side of the actuator on the tip of the shaft [A].
2. Rotate it slightly until it fits over the "D" so that you can see the end of the shaft [B].
3. Set the bushing in the end plate.
2.Replacement and Adjustment
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