This is a new service part. It is used to tighten the drum knob completely.

If the knob is not tightened completely, this can cause the developer/toner mixture to collect on the magnetic roller and scratch the drum.

New P/N

Description

Q’ty

D1792445

KNOB:TORQUE LIMITER MECHANICAL CLUTCH:ASS'Y

1

  • When you install a drum and tighten the drum knob with this tool, the drum cleaning unit should not be installed on the PCDU.
  • If the drum knob is loosened with the drum cleaning unit installed, be sure to remove the drum cleaning unit, and then tighten the knob.
  • Tightening the drum knob with the drum cleaning unit installed will cause the drum cleaning unit to apply pressure to the drum and narrow the gap at the front side.

To tighten the drum knob with the tool:

  1. Insert the tool into the face of the drum knob.
    These are the tabs inserted into the drum knob.

    The tabs are aligned with the holes on the face of the knob.

    Press gently to insert the tabs.
  2. Twist the drum knob clockwise until the tool runs idle.
  3. Check the drum knob position. The groove [A] should be slightly to the right of the vertical reference line [B] in the photo.