Brother NV4000D Service Manual page 205

Module
4
Drop ASSY assembly
1. Attach the retaining ring (E3) to the outer groove on the vertical feed shaft
1, and then place the polyester slider 2 onto the shaft.
2. Insert the vertical feed shaft 1 into the right shaft hole on the vertical
supporting plate 3.
3. Place the set screw collar 4, vertical lever 5, polyester slider 6, feed dog
correction lever 7, and spring
order.
4. Insert the vertical feed shaft 1 until it reaches the left shaft hole on the
vertical supporting plate 3.
5. Temporarily attach the screw 1 to the set screw collar 4.
*Key point
• Perform "Drop assembly adjustment" on page 3 - 77, and then
fully tighten the screw 1.
6. Attach the retaining ring (E3) between the vertical supporting plate 3 and
the set screw collar 4.
*Key point
• Slide the set screw collar 4 to the left to attach the retaining
ring (E3).
7. Apply 1 or 2 drops of sewing lubricant to the vertical feed shaft 1.
Apply sewing lubricant to the vertical feed shaft.
Start movie clip (CD-ROM version only)
1
S57
Feed/rotary hook module
over the vertical feed shaft in this
S57
Set Screw, Socket (CP)
M4X4
Hand tighten
Color; Black
13
7.5
1 - 2 drops
S57
Torque
SPRING
XC7856***
1 2
3
Retaining ring E3
5 4 1
7 6
1
3 - 73