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6.1 Joint #2 - Replacing the Motor
AC servo motor 750 W
Maintenance
Parts
Belt tensile jig*
Hexagonal
wrench
Tools
Cross-point screwdriver (#2)
Torque wrench
Thickness gauge (0.5 mm)
Belt tension meter
Cloth (cushioning)
* The belt tensile jig is an assembly jig. Use the jig 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, tilt the Arm #2 and press it against the Arm #1.
Reference: C8 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.
C Series Maintenance Manual Rev.2
Name
width across flats: 2.5
mm
width across flats: 3 mm
width across flats: 4 mm
width across flats: 5 mm
C8 Maintenance 6. Joint #2
Qty.
1
2168683
1
1674582
1
For M5 hexagon socket set screw
1
For M6 hexagon socket head cap bolt
1
For M5 hexagon socket head cap bolt
1
For M6 hexagon socket head cap bolt
1
For cross recessed head screws
1
For tightening torque control
2
For pulley position adjustment
1
Refer: Unitta U-505
1
For pressing arms
Note
309
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