Removing The O-Ring, Piston And Cylinder Of The Air Pump - Riso RZ3xx Series Technical Manual

10. Removing the O-ring, Piston and Cylinder of the Air Pump.

(1) Switch off the machine power, remove the rear cover, and swing open the PCB bracket of the power
supply PCB and mechanical control PCB.
(2) Remove the E-ring holding the arm of the piston onto the air pump gear assembly, and slide off the arm
from the air pump gear assembly.
(3) Rotate the piston assembly 90 degrees, pull the piston out to the tip edge of the air pump cylinder and
swing the arm out towards you to make room for the air pump gear assembly to come out.
(4) Remove the E-ring on the air pump gear assembly and detach the gear assembly from the machine.
(5) Pull the piston assembly out from the air pump cylinder.
- Precaution in assembly continues on next page -
Air pump cylinder
RISO Inc. Technical Communications
CHAPTER 7: PAPER EJECTION SECTION
Arm
< Piston Assembly >
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Air pump gear assembly
Arm
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