Brother B-500, Service Manual

Page: 132 / 211

3 - 61
Feed and bobbin module Modules
11
Attachment of Drop knob
1. Attach the drop knob
1
to the base plate assy.
*Key point
• Attach it while lifting the section 3 to get over the boss part 2
of the base plate assy.
2. Attach the retaining ring E3 to the vertical feed shaft
4
.
3. Set the base plate assy. as shown in the right figure, and then insert the
vertical feed shaft
4
into the base plate assy., the drop knob
1
, the washer
plain
5
, the spring , the vertical lever
6
, the drop knob
1
and the
base plate from the left side.
*Key point
• Insert it until the retaining ring hit the base plate assy.
4. Attach the 3 retaining rings E3 to the grooves (3 locations) of the vertical
feed shaft
4
.
Apply EPNOC AP (N) 0 to the sliding parts of the
drop knob and the base plate assy. Bead
XC8387***
Lubricate the vertical feed shaft with OILER.
1-2 drops
XZ0206***
Apply EPNOC AP (N) 0 to the vertical feed cam
surface
A
.
Small amount
XC8387***
S12
2 3
1
6 5
S12
4
Retaining ring E3
1
Retaining ring E3
4
A
S12
11
5.7
SPRING
XC2550***
12
Attachment of Vertical adjuster screw assy.
1. Attach the M5 nut
2
to the vertical adjuster screw assy.
1
.
2. Attach the vertical adjuster screw assy.
1
to the feed bar
3
.
*Key point
• Refer to "4-22 Adjustment of Feed dog height".
3 2
1