Epson LS20, Manipulator Manual, Page: 104 / 176

Maintenance 5. Arm #1
92 LS20 Rev.4
(5) Secure the Top plate to the circular spline.
Loosely fasten all bolts in a crisscross pattern so
that the bolts will be fastened evenly. Then,
using a torque wrench, tighten each bolt securely
in a crisscross pattern at the torque specified in
the table below.
16-M5 × 30
Top Plate
Reduction
Gear Unit
Item Bolt type Bolts Tightening torque
Joint #1 reduction
gear unit
M5 16 10.0 N ⋅ m (102 kgf ⋅ cm)
Be careful not to apply too much force since it may damage the parts.
(6) Apply grease (SK-1A) inside the flexspline.
Grease volume: 80 g
(7) Mount the spacer to the reduction gear unit.
Hexagon socket head cap bolts: 4-M4×15
Tightening torque: 5.5 N ⋅ m (56.1 kgf∙cm )
Hexagon socket head cap bolts 8-M5×40
Tightening torque: 10.0 N ⋅ m (102 kgf∙cm)
8-M5 × 40
Spacer
Reduction
Gear Unit
4-M4 × 15
(8) Mount the Joint #1 motor.
Follow the installation steps in Maintenance: 5.1 Replacing Joint #1 Motor .

NOTE