Ricoh C211 Service Manual page 611

2. Drum Drive Belt
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Set the image position to "O"by turning off and on the main switch.
Turn off the main switch and unplug the power supply cord.
Remove the drum unit.
Remove the rear cover.
Remove the center support plate [A] (5 screws).
Loosen the screw securing the drive gear (18T) [B] bearing.
Remove the support side plate [C] (3 screws).
Remove the drive gear (18T) [B] with the bearing (2 hexagonal screw).
Remove the relay gear assembly [C].
Loosen the screws [B] securing the print pressure cam drive gear (out
2
and
remove the drive gear).
Remove the bearing support bracket [D].
Remove the top support bracket (6 screws).
Note: Hold the timing gear assembly [F] to prevent it from falling when remov-
ing the top support bracket.
Disconnect the encoder motor.
Remove the timing gears assembly [F].
Remove the belt tension bearings [1].
Replace the drum drive belt [G].
Reassemble the pressure cam drive gear assembly [H].
Install the relay gear assembly drive gear (18T) with the bearing.
Install the support side plate (3 screws).
Adjust the belt position so that the hexagonal screw can be seen through the cen-
ter support plate hole [J] when the drum drive gear is at home position.
Install the belt tension bearings [1] (E-ring).
Adjust the feed cam position by inserting the shaft.
Install the timing gear assembly.
Install the two bearings. Pull out the shaft.
Install the top support bracket.
Install the bearing support bracket.
Install the center support plate.
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