Yamaha SIGMA-G5SII Service Information page 99

(3) Tighten the lock nut with the standard tightening
torque using the spanner (#19).
Note:
Mark on the position 100mm of the spanner and press the marked
section vertically using the push-pull gauge until the value reaches
" "
63N . Turning it with the hexagon wrench is also available.
(4) Tighten the setscrew with the hexagon wrench (#2).
When the setscrew is to be fixed, apply Screw
Lock 1401B and tighten it with 147cN.m.
(5) Tighten the lock nut with the standard tightening
torque using the spanner (#17).
After tightening the lock nut, fix the lock nut
using the setscrew.
Note:
Mark on the position 100mm of the spanner and press the marked section using the push-pull gauge
until the value reaches
After applying Screw Lock 1401B, tighten the lock nut with 147cN.m.
(6) Fix the ball screw movable section onto the head plate temporarily.
Note: Arrange it so that the ball screw movable section can move slightly.
(7) Slide the head to the motor side (in the direction ①), and tighten the two upper bolts
slightly.
Note: Tighten it to the extent that the ball screw movable section cannot be moved.
Fix the ball screw movable section
onto head plate temporarily.
(8) Slide the head onto the center of the beam and tighten the two lower bolts lightly.
" "
28N . Turning it with the hexagon wrench is also available.
The purpose is to perform the positioning around the center of the ball screw. (Refer to
Fig. C28).
Service Information
Move the head plate in the direction ① to
center the ball screw.
Fig. C28
SI1705004E-00=SIGMA-G5SII Service Manual
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For Service Engineer
Set screw
Lock nut
Fig. C26
Set screw
Rock Nut
Fig. C27
①