typical GC24660, Руководство пользователя

Страница: 11 / 36

18 18
19 19
20 20
1. Open the hook cover.
2. Put down the machine head.
3. Take off the bevel gear oil case (upper).
4. Loosen the screw B, A and D.
5. Turn the balance wheel to lift the needle by 1.8mm
from its lowest position.
6. Turn the bevel gear C to align the hook point with
the center of the needle groove.
7. Tighten the screw B and screw A.
8. Install the bevel gear oil case (upper). 1. Open the hook cover.
2. Put down the machine head.
3. Take off the bevel gear oil case (upper).
4. Loosen the screw B, A and D.
5. Turn the balance wheel to lift the needle by 1.8mm
from its lowest position.
6. Turn the bevel gear C to align the hook point with
the center of the needle groove.
7. Tighten the screw B and screw A.
8. Install the bevel gear oil case (upper).
21. Adjusting the position of the rotating hook and needle (Fig.18) 21. Adjusting the position of the rotating hook and needle (Fig.18)
22. Adjusting the position of the needle bar (Fig.19) 22. Adjusting the position of the needle bar (Fig.19)
23. Adjusting the position of the hook point (Fig.20) 23. Adjusting the position of the hook point (Fig.20)
When the tip of the needle is raised by 1.8mm from its
lowest position, the position of the rotating hook and
the needle should be set as shown in Fig.18.
1. The top of needle eye should be 1
0.3mm lower
than the hook point.
2. Hook point is aligned with the tip of the needle.
3. The clearance between the hook point and the
needle groove should be 0~0.05mm.
When the tip of the needle is raised by 1.8mm from its
lowest position, the position of the rotating hook and
the needle should be set as shown in Fig.18.
1. The top of needle eye should be 1
0.3mm lower
than the hook point.
2. Hook point is aligned with the tip of the needle.
3. The clearance between the hook point and the
needle groove should be 0~0.05mm.
When the needle bar is lifted by 1.8mm from its
lowest position, adjust the its position to make the
needle eye 1
0.3mm lower than the hook point.
1. Turn the balance wheel to lift the needle bar by
1.8mm from its lowest position.
2. Move the needle bar B upward and downward to
meet the request.
3. Tighten the screw A.
When the needle bar is lifted by 1.8mm from its
lowest position, adjust the its position to make the
needle eye 1
0.3mm lower than the hook point.
1. Turn the balance wheel to lift the needle bar by
1.8mm from its lowest position.
2. Move the needle bar B upward and downward to
meet the request.
3. Tighten the screw A.