Work Clamp Lifter Mechanism; Work Clamp Specifications) - Brother BAS-311H Service Manual

7-4. Work clamp lifter mechanism (Motor-driven work clamp specifications)
Apply grease <Grease unit (SB1275-101)> specified by Brother to the portions indicated by the white arrows.
1. Ball bearings [2 pcs.]
2. Work clamp cam
3. Work clamp cam gear
4. Work clamp fulcrum shaft
5. Retaining ring C
6. Plain washer
7. Screw
8. Set screws [2 pcs.]
9. Set screws [2 pcs.]
10. Work clamp driving lever
11. Plain washer
12. Stepping foot driving lever
13. Work clamp lever shaft
14. Set screw
15. Set screw
16. Work clamp lifter link
(Insert from the back)
17. Link shoulder screw
18. Bolt
Apply adhesive (Threebond
1324N or similar) to the outer
bearing surface of the ball
bearing (1).
Align the screw stop, and then tighten the
screw (14) so that there is no play in the
work clamp driving lever (10) and the
stepping foot driving lever (12).
Check that the work clamp driving lever
(10) and stepping foot driving lever (12)
turn smoothly.
1) Set the work clamp cam gear (3) so that there is no
clearance between it and the ball bearing (1) in the
shaft direction, and then align the V groove in the
work clamp fulcrum shaft (4) with the thread on the
hole side of the work clamp cam gear (3). Then
tighten the set screw (8).
3366B
Inside hole
2) Set the work clamp cam (2) so that there is no clearance
between it and the work clamp cam gear (3) in the shaft
direction, and then align the V groove in the work clamp
fulcrum shaft (4) with the thread on the index mark side on
the work clamp cam (2). Then tighten the set screw (8).
3) Lastly, tighten the two set screws (9).
BAS-311H
7. ASSEMBLY
3327B
Apply adhesive
(Threebond 1324N or
similar) to the outer
bearing surface of the
ball bearing (1).
Index mark
3367B
62