Gestetner B147 Service Manual page 1059

Tech Service Bulletin No. B147/B149/B190 – 022
2. Remove the front cover (2 screws).
3. Hold the drum at both ends as shown, and then slide it in the direction of the arrow until the outer gear
has cleared the PCU frame (see next photo).
Slide the drum until this outer
gear clears the PCU frame,
as shown.
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