Main Unit Needle-Presser Unit, Needle Threader Unit, Upper Shaft Unit - Brother NV4000D Service Manual

Main unit
3
Needle-presser module attachment
1. Attach the retaining ring (E5) to the shaft 1.
2. Insert the shaft 1 into the shaft hole on the needle-presser module (left
side).
*Key point
• Insert the shorter end of the shaft from the retaining ring (E5)
into the shaft hole on the needle-presser module.
3. Attach the needle-presser module to the arm bed.
*Key point
• Insert the tab 3 of the arm bed into the reference hole 2 on
the rear of needle-presser module.
4. Apply 1 or 2 drops of Turbine Oil #100 to the oiling ports (2 locations) of
the shaft bushing.
5. Temporarily tighten the screw 1 to the rear of unit and adjust clearance
between needle and rotary hook point. 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.
6. Attach shaft support plate B and adjust plate A 5 to the shaft bushing 3
of the arm bed with the 2 screws 2.
7. Attach shaft support plate A to the shaft 6 of the arm bed with the 2
screws 2.
*Key point
• Move the shaft 1 to the right and then tighten the 2 screws 2.
• Refer to "Needle-presser module" on page 3 - 104 for the
assembly procedure.
Apply Turbine Oil #100 to the oiling ports (2 locations)
of the shaft bushing
Start movie clip (CD-ROM version only)
1
2
3 - 4
Needle-presser unit, needle threader unit, upper shaft unit
Screw, Pan
M3X20
Color; Silver
Taptite, Bind S
M4X10
Color; Gold
3
1 - 2 drops
6
Torque
·
0.78 – 1.18 N m
Torque
·
1.47 – 1.98 N m
Retaining ring E5
1
2
1
2 2 4
5