Ricoh DD 4450 - Ink Pump Adjustment Procedure

Drum
SM 4-63 C279
Replacement
and
Adjustment
4.10.5 INK PUMP ADJUSTMENT
Purpose: To ensure the smooth operation of the ink pump plunger by properly positioning its
holder.
 Remove the drum
[A]: Lower pump cover (
× 2)
[B]: Upper pump cover (
× 3)
1. Remove the E-ring [C] to free the plunger from the pump drive slider [D].
2. Loosen the two screws securing the holder [E]. (Do not remove the holder.)
3. Push the plunger [F] until it reaches the bottom.
 The end of the plunger [F] must not stick out from the holder [E].