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5.2.2 Joint #1 - Replacing the Reduction Gear Unit
Reduction gear
unit
(Joint #1)
Maintenance
Parts
Belt tensile jig*
J1 brake positioning jig*
Wire tie AB100
Hexagonal
wrench
Tools
Cross-point screwdriver (#2)
Torque wrench
Belt tension meter
Cloth (cushioning)
* The belt tensile jig and J1 brake positioning jig are assembly jigs. Use the jigs when adjusting belt tension.
The brake is mounted on each joint to prevent the arm from lowering due to its own weight while the Controller
power is OFF or the motor is OFF status. The brake does not work during replacement. Be careful when
performing maintenance work.
When removing the Joint #2 motor unit, tilt the Arm #2 and press it toward the Arm #1.
Reference: Maintenance 6.1 Joint #2 - Replacing the Motor, Removal step (2)
When pressing the arm, put a piece of cloth or a similar material between the arms to avoid contacting each other.
This protects the arm surfaces from scratching and paint peeling off.
C8 Rev.13
(M/C Cable Downward)
Name
C8-A701*B* (C8)
C8-A901*B* (C8L)
C8-A1401*B* (C8XL)
width across flats: 2.5 mm
width across flats: 3 mm
width across flats: 4 mm
width across flats: 5 mm
Maintenance 5. Joint #1
Qty.
1
1674602
1
1674603
1
1674604
1
1674582
1
1675081
1
1675753
1
For M3 hexagon socket head cap bolts
1
For M4 hexagon socket head cap bolts
1
For M5 hexagon socket head cap bolts
1
For M6 hexagon socket head cap bolts
1
For cross recessed head screws
1
For tightening torque control
1
Refer: Unitta U-505
1
For pressing arms
Note
205
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