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Maintenance 10. Joint #6
10.3 Joint #6 - Replacing the Timing Belt
Maintenance
Joint #6 timing belt
Parts
Belt tensile jig
Hexagonal wrench
(width across flats: 3 mm)
Tools
Cross-point screwdriver (#2)
Belt tension meter
* 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.
Removal: Joint #6 Timing belt
1. Turn OFF the Controller power.
2. Remove the Arm #4 side cover.
For details, refer to Maintenance: 3. Covers.
3. Loosen the Joint #6 motor unit set screw.
Hexagon socket head cap bolt: 2-M4×15 (with a plain washer)
4. Remove the Joint #6 timing belt.
Installation: Joint #6 Timing belt
1. Place the Joint #6 timing belt around the pulley 1 and 2 of the Joint #6.
2. Secure the Joint #6 motor unit.
For details, refer to Maintenance: 10.1 Joint #6 – Replacing the Motor, Installation steps (5) to (6) and
(10) to (11).
298
Name
339 mm
Qty.
1
1655933
1
1674582
1
For M4 hexagon socket head cap bolts
1
For cross recessed head screws
1
Refer: Unitta U-505
Note
C8 Rev.13
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