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9.3 Joint #5 - Replacing the Timing Belt
Joint #5 timing belt
Maintenance
Parts
Belt tensile jig
Hexagonal wrench
(width across flats: 3 mm)
Tools
Cross-point screwdriver (#2)
Torque wrench
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 #5 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 #5 motor unit set screws.
Hexagon socket head cap bolts: 2-M4×15
4. Remove the Joint #5 timing belt.
Installation: Joint #5 Timing belt.
1. Pass the Joint #5 timing belt around the pulley 1 and the pulley 2 of the Joint #5.
2. Secure the Joint #5 motor unit.
For details, refer to Maintenance: 9.1 Joint #5 – Replacing the Motor, Installation steps (5) to (6) and (11)
to (12).
C8 Rev.13
Name
330 mm
(with a plain washer)
Maintenance 9. Joint #5
Qty.
1
1655932
1
1674582
1
For M4 hexagon socket head cap bolts
1
For cross recessed head screws
1
For tightening torque control
1
Refer: Unitta U-505
Note
287
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