Brother RH-9820 Service Manual page 204

7. ADJUSTMENTS
Work clamp plate L assembly
Work clamp plate L assembly
19. Insert clamp support shaft J (25) in the direction of the arrow, and then install retaining ring C (26).
20. Place the sub clamp arm (22) onto clamp support shaft J (25) as shown in the illustration, and then install retaining ring C (21).
21. Tighten the two set screws (27) so that the clearance between the clamp shaft holder (29) and clamp lever L (30) is 2.5 ± 0.5
mm.
* Check that the sides of work clamp L (31) and needle plate L (32) are aligned at this time. If they are not aligned, loosen
the socket bolt (33) and adjust.
22. Install the button clamp (35) to the optional sub clamp wrist L (34).
23. Install sub clamp wrist L (34) to the sub clamp arm (22), and then secure it by tightening the socket bolt (36).
(Refer to "7-26-4. Adjusting the position of the sub clamp".)
24. Install the spring (20) to the sub clamp arm (22) and the clamp shaft holder (29).
195
(Viewed from the underside)
RH-9820
18. Remove retaining ring C (26), loosen
the two set screws (27), and then
remove the clamp support shaft (28)
in the direction of the arrow.
1173B
(Viewed from the underside)
1174B