Epson C Series, Maintenance Manual

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C4 Maintenance 5. Joint #1
C Series Maintenance Manual Rev.2 63
5.2 Joint #1 - Replacing the Reduction Gear Unit
The shapes and replacement procedures of the reduction gear units vary depending on the specification type.
The reduction gear units have the following two specification types which differ depending on the time of
shipment.
Before performing maintenance, confirm the specification type of the reduction gear unit.
Specification type (1) Specification type (2)
A reduction gear unit consists of the following parts and accessories. When replacing the reduction gear unit,
be sure to replace these parts and accessories all together as a set.
Reduction gear unit : Wave generator, Flexspline, Circular spline
Accessory : Spacer, Grip ring (only for Specification type 1)
For details, refer to
C4 Maintenance: 17. C4 Maintenance Parts List
.
It is recommended to replace the O-ring when replacing the reduction gear unit.
Name Quantity Note
Maintenance
Parts
Joint #1 reduction gear unit
1
1687022
Joint #1 O-ring
1
1480857
Tools
Hexagonal
wrench
width across flats: 2.5 mm 1 For M5 hexagon socket head set screws
width across flats: 3 mm 1 For M4 hexagon socket headcap bolts
width across flats: 5 mm 1 For M6 hexagon socket headcap bolts
Cross-point screwdriver
1
For covers
Torque Wrench
1
Spatula
1
For greasing
Force gauge 1 For belt tension adjustment
Wiping cloth 2
For wiping grease