IBM 4247 Maintenance Information page 431

Drive
Pulley
Platen
Bearing
Screws
Figure 167. Platen. (Viewed From Top)
7. Slide the platen to the left until the right side is free; lift and remove.
Replacement
1. Follow the removal steps in reverse order.
Note: Ensure the upper feed roller shaft drive belt is installed on the feed roller shaft.
2. Reinstall the bearing retainer; position it in a way that eliminates any radial looseness of the bearing.
Retaining
Clip
Chapter 5. Removals and Adjustments
431