Assembly Of Lever Holder Assy - Brother XM3700 Service Manual

Application of Assembly
2

Assembly of Lever holder assy

1. Tighten the screw 1 to the reverse sewing lever D assy 2, and then
tighten the nut 4 3 to the screw 1 temporarily.
*Key point
• Fully tighten the nut 4 3 after performing
SS pattern (triple stretch stitch) stitch
2. Assemble the reverse sewing lever C assy 4 and the reverse sewing lever
D assy 2 to the shaft 5 of the lever holder sub assy 6 as shown in the
right figure, and then attach the retaining ring E4 7.
3. Set the connecting rod D 8 and the connecting rod U 9 to the shaft 0 of
the reverse sewing lever C assy 4, and then attach the retaining ring E4
A.
*Key point
• Check that align the boss of the connecting rod D 8 with the
positioning hole of the connecting rod U 9.
4. Set the reverse sew adjusting screw B to the connecting rod D 8 and the
connecting rod U 9, and tighten the nut 4 C temporarily.
*Key point
• Check that place the reverse sew adjusting screw B with the
larger end facing rightward.
• Fully tighten the nut 4 C after performing
Straight forward/Straight reverse stitch
Lubricate the EPNOC AP(N) 0 to the shaft 5 of
the lever holder sub assy 6.
Lubricate the EPNOC AP(N) 0 to the shaft 0 of
the reverse sewing lever C assy 4.
Lubricate the EPNOC AP(N) 0 to the shaft D of
the reverse sewing lever D assy 2.
Feed control mechanism
"4-29 Adjustment:
length".
"4-32 Adjustment:
length".
3mm dia. ball
3mm dia. ball
3mm dia. ball
3 - 55
2
D
1
5
4
6
9
B
A
9
8
C
D 2 3
7 1 4
8 9 2
B C 0 A
7
3
0
B
6
4
6