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4.8.5 Gear replacement
1 Turn off the power supply.
2 Referring to “4.8.2 Drive unit replacement procedure” and remove the drive unit.
[Caution] When the drive unit is removed, the springs on the pump head (4 pieces) are
freed causing the internal parts (diaphragms) elongated.
To avoid this, put the drive unit back to its place approximately within 60
minutes.
3 Remove the fixing screws (2 positions) and take out the pump cover.
4 Referring to “4.8.4 Motor replacement”, remove the motor.
5 Hold the D-cut of the drive shaft by spanner and remove the hex head bolt near the gear.
6 Shift the drive shaft as shown by an arrow and remove the shaft from the bearing.
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