Brother NV4000D Service Manual page 137

Main unit
4
Upper shaft assembly attachment
1. Apply 1 or 2 drops of Turbine Oil #100 to the upper shaft bushing
attachment section 1, and then move the upper shaft bushing 2 to the
lubricated section.
2. Insert the fixed joint 3 into the upper shaft assembly 4.
*Key point
• Be careful of the direction of fixed joint when inserting.
3. Attach the upper shaft assembly 5 to the arm bed.
*Key point
• Place the encoder 7 of the upper shaft assembly on the left
side of the arm rib 8.
• Place the upper shaft bushing 2 of the upper shaft assembly
on the upper shaft bushing attachment section of the arm bed.
4. Attach bushing presser A 9 to the upper shaft bushing attachment section
of the arm bed with the screw 1.
Apply Turbine Oil #100 to the upper shaft bushing
attachment section.
Start movie clip (CD-ROM version only)
1
Needle-presser unit, needle threader unit, upper shaft unit
Taptite, Bind S
M4X10
1.47 – 1.98 N
Color; Gold
3
4
Screw holes toward the left side
1 - 2 drops
Torque
·
m
1
5 2
4 7 8
6
9
1
3 - 5