Removal Of The Nozzle Selection (Ns) Axis Motor; Attachment Of Nozzle Selection (Ns) Axis Motor - Yamaha SIGMA-G5SII Service Information

4.8. Removal of the Nozzle Selection (NS) Axis Motor

(1) Shut down the and turn off the power breaker
machine.
(2) Release the cable harness for the NS-axis
motor and unplug the cable.
(3) Loosen the two fixing bolts for the NS-axis
motor and remove the motor. M2.5L10
(Screw Lock 1401B) (Located on the
opposite side in the right figure)
M2.5L16 + FW + M2.5 Nut (Screw Lock
1401B)
* The nut has been fixed from the bottom
side, so take care not to lose it and the
washer when removing them.
(4) Incline the motor to remove the timing belt
from the pulley and separate the nozzle
selection axis from the motor.

4.8.1. Attachment of Nozzle Selection (NS) Axis Motor

(1) Loosen the split block fastening bolt (M2L8)
on the removed motor and remove the block
and pulley. Then, attach them to the new
motor.
* Degrease the shaft section of the new
motor sufficiently using alcohol.
* Fix the pulley temporarily because the
pulley attachment position is aligned after
the motor is attached to the head.
(2) Fix the NS-axis motor to the head
temporarily.
(3) Tie up the cables and plug the connectors.
Service Information
Split Block
Fastening Bolt
(M2L8)
SI1705004E-00=SIGMA-G5SII Service Manual
142/273
For Service Engineer
M2.5 Nut + FW
Fig.D45
Split Block
Fig.D46