Brother BAS-311G service manual Upper shaft mechanism, Assembly

6. ASSEMBLY

6-8. Upper shaft mechanism

Apply adhesive (Threebond 1324 or similar) to the outside of the bearing of joint assy.

5140Q

Install the bobbin winder driving wheel so that it is in phase with the

thread take-up crank and alignedReference line with the reference line on the upper

shaft.

5204Q

1） Tighten the screw of the thread take-up crank so that it is aligned with the upper shaft hole.

2） While pressing the thread take-up crank so that there is no play in it, tighten the two set screws (8).

Apply adhesive (Threebond 1401 or similar) to the thread section of the screw.

1.Upper shaft

2.Pulley gear R

3.Bobbin winder driving wheel

4.Stepping clamp cam assy

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 assy

13.Set screws [2 pcs]

BAS-311G, BAS-326G 75