Needle Bar Mechanism - Brother BAS-342G Service Manual

6-8. Needle bar mechanism

Apply the grease <SA8837-001> specified by Brother in the places indicated by
Inside hole
Left-hand thread
Fit the chamfering side of the
slide block into the groove on
the slide block guide.
Set so that this hole faces vertically,
and then push in
tightening the set screws (14) to
install.
After securing the needle bar, position
the slide block guide so that the machine
pulley turns smoothly, and then tighten
the bolts.
1. Slide block guide
2. Bolts [2 pcs]
(Temporarily tighten)
3. Washer
4. Thread take-up lever
assembly
5. Needle bearing
6. Needle bar crank
7. Set screws [2 pcs]
8. Set screw
9. Needle bearing
gently while
10. Needle bearing
11. Screw
12. Thread take-up support
13. Thread take-up support shaft assembly
14. Set screws [2 pcs]
15. Rubber caps [2 pcs]
16. Rubber cap
17. Slide block
BAS-342G
.
While gently pushing the needle bar
crank in the shaft direction, align the
set screw with the screw stop and then
tighten the set screw.
(Continued on the next page.)
6. ASSEMBLY
5142Q
74