Epson LS20 Series

Maintenance 8. Arm #4
120 LS20 Rev.4
8.2 Replacing the Timing Belt
Name Quantity Note
Maintenance
parts
U belt (Width 30 mm) 1 1618729
Tools
Hexagonal wrench
width across flats: 3 mm
1
For M4 screw
width across flats: 4 mm
1
For M5 screw
Spanner
width across flats: 7 mm
1
Cross-point screwdriver (#2)
1
For M3, M4 screws
Torque wrench
1
Nippers
1
For cutting wire tie
Ultrasonic tension meter
1
Refer: Unitta U-508
Material
Wire tie
-
For binding cables
A brake is mounted on the motor of Joints #3 and #4 to prevent the shaft from moving
down due to the weight of the end effector while the power to the Controller is OFF or
while the motor is in OFF status (MOTOR OFF).
Move the shaft down to its lower limit before the replacement procedure following the
removal steps.

NOTE