17
4) Adjusting oil flow in the thread take- up
As in the figure 21, the more the point
of the control plate of
oil flow
goes close to the center of hole of thread take-up
crank shaft, the more oil comes. On the other hand, the more
the point goes close to the corner
of the link cam washer, the
less oil comes.
And when the point goes past the corner of the link cam
washer, the oil does not come out.
[Figure 21]
5) Adjusting oil flow of the hook
A. Check oil flow
a) After 3-minute idle operation of the machine, put the
paper at the place as in figure 22. And rotate the machine
for a 5 second. The amount of oil can be checked by the
oil sprayed on the paper.
b) Implement the test three times to find out whether it is
short or abundant. The appropriate flow is one that does
not exceed or lack based on the flow in the picture.
( If oil flow is not enough, the hook will not operate
properly. If oil flow is too much, the cloth may be
contaminated by oil.)
B. Adjusting oil flow
Turning the oil adjusting screw
clockwise increases the
oil flow, and counter clockwise decreases the oil flow.
[Figure 22]
Hook
Bed
Oil fan
Oil flow test paper
Sprayed oil
Minimum standard
0.5mm
3~10mm
1mm
Maximum standard
Less
More
Sprayed oil
