C4 Maintenance 7. Joint #3
C Series Maintenance Manual Rev.2 101
13. Install the assembled Arm #3 to the Arm #2.
Hexagon socket head cap bolts: 16-M3×20
Tightening torque: 2.5 N·m (25 kgf·cm)
When installing the shaft to the hole of the Arm #2, be careful not
to damage the seal.
Be careful not to let the O-ring on the groove of the circular spline
comes off.
14. Install the pulley 2.
Hexagon socket set screws: 2-M4×8 (with a brass bushing)
Tightening torque: 2.5 N·m (25 kgf·cm)
Join the end of the shaft and the side of the pulley, and then fix
them.
15. Install the Arm #2 plate.
Hexagon socket head cap bolts: 5-M4×12
Tightening torque: 4.9 N·m (50 kgf·cm)
16. Install the cable unit.
For details, refer to C4 Maintenance: 4.1 Replacing the Cable Unit, Installation steps (5) through (39) and
through (62) to (63).
17. Place the Joint #3 timing belt to the pulley 1 and the pulley 2 of
the Joint #3.
18. Secure the Joint #3 motor unit by applying tension.
For details, refer to C4 Maintenance: 7.1 Joint #3 –
Replacing the Motor (with a Brake), Installation steps (8)
through (11).
19. Install the removed covers.
For details, refer toC4 Maintenance: 3. Covers.
20. Perform the calibration.
For details, refer to C4 Maintenance: 16. Calibration.
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