Ricoh D146 Service Manual page 185

Punch Unit PU3050
8. Insert and attach the hopper guide plate [A] from the front ( ×4).
At this time, pass the harness [B] through the clamp [C].
9. Attach the stay [A] ( ×3).
Front [B]: Insert the holes in the stay over the embossed parts on the finisher.
Rear [C]: Place the axis of the stay on the notch in the finisher.
D146/D147/D148/D149/D150 2-114 SM