C8 Maintenance 9. Joint #5
376 C Series Maintenance Manual Rev.2
Installation: Joints #5, #6 Reduction gear unit set
When tightening hexagon socket head cap bolts, refer to the 2.4 Tightening Hexagon Socket
Head Cap Bolts.
1. C8, C8L:
Apply grease to the mating part of the sleeve and the fixing bolts.
(for grease leakage prevention for the reduction gear unit)
Fit the J4 sleeve and install the J4 sleeve holder.
Hexagon socket head cap bolts: 4-M3×6
Tightening torque: 2.0 ± 0.1 N·m
2. C8:
Install the Joint #4 reduction gear unit.
For details, refer to Installation steps in C8 Maintenance 8.2 Joint
#4 – Replacing the Reduction Gear Unit.
C8L, C8XL:
Install the Arm #4 extension flange.
(C8XL does not have the sleeve.)
Hexagon socket head cap bolts: 12-M3×18
Tightening torque: 2.4 ± 0.1 N·m
3. Install the Joints #5 and #6 reduction gear unit.
C8:
Install the J4 flange to the Arm #3.
Hexagon socket head cap bolts: 8-M5×30
Tightening torque: 10.0 ± 0.5 N·m
Apply proper tension to the Joint #4 timing belt and fix the Joint
#4 motor unit.
For details, refer to C8 Maintenance 8.1 Joint #4 – Replacing the
Motor, Installation steps (6).
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