C4 Maintenance 9. Joint #5
124 C Series Maintenance Manual Rev.2
5. Loosen the set screws of the pulley 2 and remove the Joint #5
pulley 2.
Hexagon socket set screws: 2-M3×5 (with a brass bushing)
There is a brass bushing in one of the set screws.
Be careful not to lose it.
6. Loosen the set screws of the pulley 2 and remove the Joint #6
pulley 2.
Hexagon socket set screws: 2-M3×5 (with a brass bushing)
There is a brass bushing in one of the set screws.
Be careful not to lose it.
7. Remove the bearing retainer plate.
Hexagon socket head cap bolts: 4-M3×6
8. Pull out the gear unit.
If it is difficult to remove the gear unit, install the removed pulley
2 to the shaft and remove the parts.
The bearing of the gear unit has shim rings.
Check the position and the number of the shim rings.
When installing the gear unit, make sure to use the same number
of the shim rings to the same position.
9. Remove the Arm #4 plate.
Hexagon socket head cap bolts: 6-M3×12
Hexagon socket head cap bolts: 4-M4×10
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