Adjusting Lubrication Of Thread Take-Up Spring Part; Adjusting Lubrication Of Hook; Adjustment Of Top Stop Position - SunStar KM-1640BL-7 User Manual

8.3) Adjusting lubrication of thread
take-up spring part
As in the figure 8-3, the more the point② of the control
plate of oil flow① 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 corner⑤
of the link cam washer, the less oil comes.
And when the point goes past the corner of the link cam
washer④, the oil does not come out.

8.4) Adjusting lubrication of hook

A. Confirming the amount of lubrication
a) Perform an idle rotation for about 3 minutes of the
machine. Later, place the paper for confirming the
amount of lubrication as in Figure 8-4 and rotate
the machine for 5 seconds to confirm the amount
of oil sprayed to the paper.
b) Perform 3 times of confirming the amount of
lubrication. The adequate adjusted amount is a
state where the maximum and minimum amounts
do not fall short of or exceed the amount shown in
the picture.
(If the amount of lubrication is too small, it could
invite the hook seizure, and if the amount is too
large, it could cause a contamination by oil.
B. Adjusting the amount of lubrication
When you turn clockwise(+)the lubrication adjustment
screw① inserted in the front bushing of the lower
shaft, the amount of oil will increase while turning to
counterclockwise(-) will decrease the amount.

8.5) Adjustment of Top Stop Position

A. Remove the hand pulley and motor cover A.
B. The top stop sensor plate① on the top stop position
is like in the figure and the upper shaft angle②
should be upward.
C. Make sure that the position for carving② is upward
by adjusting the position of the top stop sensor plate.
26
hook
paper for confirming the
oil tray(oil fan)
amount of lubrication
sprayed oil belt
sprayed oil belt
about 0.5 mm about 1mm
minimum adequate
maximum adequate
amount
amount
①
decrease
②
①
[Fig. 8-3]
bed
[Fig. 8-4]
[Fig. 8-5]