Maintenance 8. Joint #4
130 L
S20-B Rev.4
8.2 Replacing the Timing Belt
Name Qty. Note
Maintenance
U belt (width 30 mm) 1
1618729
Tools
Hexagonal
wrench
width across flats: 3 mm 1 For M4 screw
Spanner
width across flats: 7 mm 1
Cross-point screwdriver (#2)
Torque wrench
1
Z: Tension 206 N (21.0 ± 0.75 kgf)
A brake is mounted on the motor of Joints #3 and #4 to prevent the shaft from moving down
and rotating 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.