Brother NV4000D Service Manual page 264

Module
42
Presser pulse motor holder ASSY assembly
1. Apply 1 or 2 drops of Turbine oil #100 to the shaft of the presser pulse
motor 1.
2. Insert the presser pulse motor lead wire assembly 2 into the connector of
the presser pulse motor 1.
3. Attach the presser pulse motor assembly to the presser pulse motor holder
with the 2 screws 1.
*Key point
• Position the PCB of the presser pulse motor to the right.
4. Attach the ATPF INIT PCB assembly 3 to the presser pulse motor holder
4 with the screw 2.
*Key point
• Engage the positioning tab on the presser pulse motor holder
with the U-shaped notch (the one far from the screw) on the
ATPF INIT PCB assembly.
• Tighten the screw 2 at the center of the slot on the ATPF INIT
PCB assembly.
Apply Turbine oil #100 to the shaft of the presser pulse
motor.
1
2
43
Presser pulse motor holder assembly attachment
1. Attach the presser pulse motor holder 1 to the unit holder with the screws
1 and 2 (2 for 2).
*Key point
• Tighten the screws 1 and 2 in the following order: 1
(temporarily tighten), 2 (fully tighten both), and 1 (fully
tighten).
NOTE
• Check that there is no grease adhered to the shutter of the
presser dial.
• Check that the shutter of the presser dial is almost centered
relative to the sensor of the ATPF INIT PCB assembly.
1
2
3 - 132
Needle-presser module
Screw, Bind
M3X4
Color; Silver
Screw, Pan (S/P washer)
M3X5
Color; Silver
Screw, Bind
M4X5
Color; Silver
Taptite, Bind B
M4X10
Color; Gold
1 - 2 drops
Torque
·
0.58 – 0.78 N m
Torque
·
0.58 – 0.78 N m
Torque
·
1.18 – 1.57 N m
Torque
·
0.58 – 0.78 N m
1 2
1 4 2
1
2
3
1