Upper Shaft Mechanism - Brother BAS-342G Service Manual

6-7. Upper shaft mechanism

Before inserting the upper shaft (1), apply
the grease <SA8837-001> specified by
Brother to the places indicated by
1） Tighten the screw of the thread take-up crank (5)
so that it is aligned with the upper shaft hole.
2） While pressing the thread take-up crank (5) so
that there is no play in it, tighten the two set
screws (8).
<
Apply adhesive Threebond 1401
section of the screw.
.
Install the driving wheel B-winder so
that it is in phase with the thread
take-up crank and aligned with the
reference line on the upper shaft.
>
to the thread
BAS-342G
Apply adhesive <Threebond 1324> to the
outer circumference of the joint assembly
bearing.
Reference line
1. Upper shaft
2. Pulley gear R
3. Driving wheel B-winder
4. Stepping clamp cam
assembly
5. Thread take-up crank
6. Screw
7. Set screw
8. Set screws [2 pcs]
9. Set screws [2 pcs]
10. Rubber cap
11. Set screws [2 pcs]
12. Joint assembly
13. Set screws [2 pcs]
(Continued on the next page.)
6. ASSEMBLY
1305B
5204Q
72