Epson C Series, Maintenance Manual

Page: 94 / 668

C4 Maintenance 6. Joint #2
74 C Series Maintenance Manual Rev.2
6.1 Joint #2 - Replacing the Motor
Name Quantity Note
Maintenance
Parts AC servo motor 400 W 1
For the part code, refer to the 17. C4
Maintenance Part List.
Radiation Sheet 1 1549699
Tools
Hexagonal
wrench
width across flats: 2.5 mm 1 For M5 hexagon socket set screw
width across flats: 3 mm 1 For M4 hexagon socket head cap bolt
width across flats: 4 mm 1 For M5 hexagon socket head cap bolt
Cross-point screwdriver 1 For covers
Torque wrench 1
Cloth 1 For pressing arms
Force gauge 1 For belt tension
The brake is mounted on the Joint #2 to prevent the arm from lowering due to its own weight while the Controller
power is OFF or the motor is OFF status. However, the brake does not work during replacement.
To replace the Joint #2 motor, tilt the Arm #2 and press it toward the Arm #1. (See the step (3)
When pressing the arm, put a cloth or a similar material between the arms to avoid each arm from contacting.
This also protects the arm surfaces and coatings.