Brother BAS-342G PS, Service Manual

Page: 85 / 152

6. ASSEMBLY
BAS-342G
76
6-9. Intermittent presser foot lifter mechanism (2)
(Continued on the next page.)
1)
With the needle bar lowered approximately 6.5 mm from
its highest position, set the stepping clamp arm F to the
position of the straight line in the illustration.
2)
Place a bushing in between stepping clamp arm F and
stepping clamp arm R so that there is no play, and then
tighten the bolt.
Install the presser bar spring collar as shown in the
illustration, and then adjust the height of the
presser adjusting screw to 32 mm.
5195Q
1393B
1307B
Notes on the installation position
(Refer to “7-13. Changing the
intermittent stroke”.)
Tighten the set screw on the screw stop
while lightly pressing the link shaft.
10. Link shaft
(with retaining ring)
11. Set screw
12. Shoulder screw
13. Screw
14. Shoulder screw
15. Screw
16. Presser bar spring collar
17. Presser bar spring
18. Presser bar spring guide
19. Adjusting screw nut
20. Presser adjusting screw
21. Intermittent presser foot
22. Plain washers [2 pcs]
23. Finger guard
24. Screw
(Temporarily tighten)
1. Stepping clamp arm F
2. Stepping clamp arm R
3. Set screws [2 pcs]
4. Bolt
5. Presser bar clamp
6. Presser bar
7. Bolt
(Temporarily tighten)
8. Stepping clamp lifter link
9. Washer
1427B
*1)
: Position when the pulley is
turned to raise the needle
bar from its lowest position
until the reference line B (or
b) on the needle bar is
aligned with the lower edge
of the needle bar bush A
1428B
Index marks
At the needle bar timing
position
*1)
, align the index
marks of the stepping clamp
cam and the stepping clamp
connecting rod, and then
tighten the set screw (3).