41 |
Sailrite�com
Leatherwork
®
Guidebook
| 42
Check the Rotational Timing of the Shuttle Gib Hook
The Shuttle Gib Hook (
A
) is driven by the Shuttle
Driver (
B
)� To change the rotation of the hook,
the driver must be repositioned�
1� Turn the balance wheel so the gib
hook point (
C
) is at its furthest position
counterclockwise (
47
)�
2� Use your finger to push the gib hook
counterclockwise to remove any gap at (
D
)�
3� Measure the distance between the gib
hook point (
C
) and the needle (
E
)� The
driver is correctly positioned when the
point is between 1/8 inch and 3/16 inch
counterclockwise of the needle (
F
)�
If spaced properly, the driver is set correctly�
If not, continue to adjust the driver (p� 42)�
Hook/Driver Gap
Oscillating hook sewing machines have loose tolerances between the Shuttle Gib Hook and the Shuttle
Driver� This play between the parts is intentional and allows the Leatherwork to sew a wide variety of
thread sizes� The typical play between parts is 0�04 inch�
47
B
A
F
C
E
D
48
Adjust the Driver
4� The driver is secured to the lower shaft with two set screws (
G
)� Loosen the screws and gently
twist the Shuttle Driver to match (
47
,
F
). If the fit to the shaft is tight, carefully use a screwdriver
as leverage� Do not allow the driver to move to the left, which would be evident by any play
between
H
and
I
� Once proper position is found and there is no play between
H
and
I
, retighten
the two set screws (
G
)
After adjusting the driver, check the left-right positioning of the Shuttle Gib Hook (p� 43)�
G
H
I
Содержание Leatherwork
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