JUKI AMS-221EHL Manual page 25

Adjustment Procedures
1. Start the Test Mode I10 (IP-410).
2. Tread on the start pedal for origin retrieval, and make adjustments by
turning the sensor slit
intermediate presser lifting shaft
diate presser lifting cam
become almost a straight line.
3. Press of the panel three times. Loosen the first screw
drive bevel gear
Take out the drive bevel gear
presser variable shaft
4. Using the [+] key or the [–] key, turn the intermediate presser variable
shaft until the second screw
able arm settles in the center of the arm's left-side hole C. (Insert
a hexagonal wrench to adjust positioning so that the arm comes in
the center of backlash deflection.)
5. Turn the intermediate presser lifting shaft
of the intermediate presser lifting cam
the drive bevel gear
in the direction of the Arrow B to fix it.
6. After the completion of second origin retrieval, press
panel twice to secure the [timing adjustment position]. In this case,
confirm that the second screw
able arm is positioned in the center of the arm's left-side hole C or
below it. (If the screw seems to have been positioned above the cen-
ter, return to Step 4 and repeat the above-mentioned adjustments.)
7. If the second screw
not positioned in the center (or lower), loosen the setscrew
sensor slit and turn this sensor slit
D for fine adjustments.
8. Make origin retrieval and confirm that the the cam follower
cated in the parallel section of the intermediate presser lifting cam
. When the condition has been found normal, fasten the setscrew
of the drive bevel gear
regularly.
(Caution) For the prevention of the sensor
make origin retrieval after confirming that the slit of the
sensor slit
.
so that the lines combining the center of the
, the standard hole of the interme-
, and the center of the cam follower
of the intermediate presser variable shaft
from the flat part of the intermediate
and move it in the direction of the Arrow A.
of the intermediate presser vari-
so that the second screw
comes just above. Press
of the intermediate presser variable shaft
of the intermediate presser vari-
of the intermediate presser variable arm
in the direction of the Arrow
and the setscrew
is positioned in the center of the sensor
of the
.
of the
is
of the
is lo-
of the sensor slit
from destruction,
– 21 –
Results of Improper Adjustment
o There will be a displacement
between the variable value of the
intermediate presser lower
position and the panel setup
value.
o If there is no cam follower
the parallel section of the interme-
diate presser lifting cam
time of origin retrieval, stepping
out may occur in the intermediate
presser motor, thus causing de-
fective stitches, generation of
sound from the face plate section,
and destruction of parts.
o If adjustments of backlash are in-
sufficient for the drive bevel gear
, stepping out may occur in the
intermediate presser motor, thus
causing defective stitches, gen-
eration of sound from the face
plate section, and destruction of
parts. .
in
at the