Brother NV4000D Service Manual page 259

Module
33
Needle holder shaft block attachment
1. Apply a small bead of EPNOC AP (N)0 to the needle roller 1 of the
needle holder assembly.
2. Insert the needle holder block 2 into the needle roller 1.
*Key point
• Position the needle holder block with the flat face on the
bottom.
3. Apply a small bead of EPNOC AP (N)0 to the shaft of the needle holder
shaft block 3.
4. Insert the shaft of the needle holder shaft block 3 into the shaft hole on the
needle holder block and the slot on the unit holder.
5. Temporarily tighten the screw 1 to the needle holder shaft block from the
bottom of the unit holder.
6. Adjust the clearance between the needle and the rotary hook point, and
then fully tighten the screw 1.
*Key point
• Refer to "Clearance between needle and rotary hook point
adjustment" on page 4 - 11 for the adjustment procedure.
Start movie clip (CD-ROM version only)
1
34
Spring-Z attachment
1. Attach spring to the left side of the unit holder 1 and the needle
S20
holder 2.
*Key point
• Attach the unit holder end of spring
the tab on the left side of the unit holder.
Start movie clip (CD-ROM version only)
S20
A decided hook form is the same.
Needle-presser module
Screw
3X10
Color; Silver
S20
to the position below
14.3
5
Torque
·
0.98 N m
2
1
SPRING-Z
XC2748***
1
2
3
1
2
S20
3 - 127