Brother BE-438B, Service Manual

Page: 96 / 198

4. ASSEMBLY
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１５
. Work clamp arm mechanism (KE-430B, 430C, 431B, 431C)
KE-430B, 430C series 89
After installing, carry out test feeding and check that the needle hole is inside the work clamp and the
feed plate frame. If the needle hole is not inside the frame, adjust the position of the work clamp arm
assembly and feed plate.
3427Q
3426Q
Align with the screw stop and push down
from above while tightening the set screw.
Be careful not to drop these two ball
bearings when installing the feed bracket
assembly.
Place the tack length feed slide block
into the groove of the feed bracket
assembly, and then use the screws to
install it together with the feed bracket
guide plate.
Tack length feed
slide block
Carry out the adjustment in “5-24. Adjusting the
home position” before installing the feed plate.
Refer to “4-20. Work clamp
arm mechanism (Applying
grease)”
Be careful not to drop these three
ball bearings when installing the
work clamp arm assembly. Secure the work clamp arm support shaft with the set screw so
that the bottom of the work clamp arm support plate and the ball
bearings touch when the work clamp is raised.
1. Feed bracket assy
2. Feed bracket guide plate
3. Screws [8 pcs]
4. Rod end
5. Tack width feed shaft
6. Set screw
7. Rubber cap
8. Feed plate
9. Screws [2 pcs]
10. Work clamp felt
11. Work clamp arm assy
12. Washers [2 pcs]
13. Bolts [2 pcs]
14. Work clamp arm support shaft
15. Set screw