Yamaha SIGMA-G5SII Service Information page 166

After the insertion, fix the nozzle shaft assembly in the three locations with the three
M1, 6L4 bolts as shown in the following figure.
* Replace the three removed M1. 6L4 bolts with new ones and fix the nozzle shaft
assembly.
Apply Screw Lock (1401B) slightly onto the bolts and fix them with a torque of 4.8
cNm (Dispose of the used bolts).
* Before inserting the nozzle shaft assembly, tie up the connectors for the linear
measure sensor with a string and pull out such connectors gently from the center
hole of the "Head Attachment Supporting Jig" through the center of the nozzle shaft
assembly.
* If the nozzle shaft assembly is inserted forcibly, the V-packing in the nozzle holder
might be damaged or come off. Be careful.
* When any excessive grease is attached to the tip of the nozzle shaft, wipe it off using
a rag, etc.
* There is only one location where the nozzle shaft is attached inside the DD motor.
Insert it so that a notch of the nozzle shaft assembly is aligned with the knock pin on
the DD motor.
(19) Fix the top block onto each nozzle shaft using the M1. 6L3 bolts.
* Replace the all fifteen removed M1. 6L3 15 bolts with new ones.
Apply Screw Lock (1401B) slightly onto the bolts and fix them with a torque of
7.5cNm (Dispose of the used bolts).
* Return the top block to where it was, so that it is attached to the correct location.
* Spread grease (Daphne Eponex No. 1) film over the cam follower on the top block
section and its entire moving surface.
Service Information
Fig.D81
Fix the bolt as shown
with the "
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For Service Engineer
" mark.