Height Of The Moving Knife (For The Right-Hand Side Hook) (For Lu-2210N/W-7, Lu-2212N-7 And Lu-2260N/W-7) - JUKI LU-2210N-7 Engineer's Manual

Adjustment Procedure
Height of the Moving Knife (for the right-hand side hook)
1. Disconnect the lead wire
the terminal board
2. Loosen the clamping screw in the hook driving shaft set collar.
3. Disconnect the urethane tubes
of the hook driving shaft saddle.
4. Loosen the hook driving shaft saddle set screw and remove the
hook driving shaft saddle.
5. Loosen the thrust collar set screws
6. Loosen the set screw
7. Loosen the set screw
8. Adjust so that a clearance of 0.4 to 0.5 mm is provided between the
moving knife and the inner hook
shaft up and down. (For LU-2210N/W and LU-2260N/W)
9. Fasten the moving knife thrust collar set screw
10. Adjust the moving knife driving arm A
. (Refer to [3.-(10)-4 Moving Knife Driving Arms A, B and C]).
11. Adjust the moving knife driving arm B
. (Refer to [3.-(10)-4 Moving Knife Driving Arms A, B and C]).
12. Temporarily fix the hook driving shaft saddle.
13. Connect the lead wire
terminal board .
14. Connect the urethane tubes
the hook shaft saddle. At the same time, use the tube connecting
screws to which the urethane tubes
fore removing it.
15. Adjust the clearance between the needle and the blade point of the
hook.
(Refer to [3.-(4)-2) Clearance between the Needle and the Blade
Point of the Hook]).
16. Adjust the needle-to-hook timing. (Refer to [3.-(4)-3) Timing between
the Needle and the Hook]).
of the thread trimmer solenoid
.
from the tube connecting screws
for the moving knife
of the moving knife driving arm A
of the moving knife driving arm B
by moving the moving knife
and fasten the set screw
and fasten the set screw
of the thread trimmer solenoid
to the tube connecting screws
had been connected be-
o If the clearance between the
from
o If the clearance between the mov-
.
.
.
.
o In the case of LU-2212N-7:
8' Adjust so that the clearance of
to the
13'Give the lead wire
of
– 45 –
Results of Improper Adjustment
moving knife and the bobbin case
is too large:
• The needle thread and bobbin
thread may fail to be caught by
the moving knife.
ing knife and the bobbin case is
too small:
• The moving knife
fere with the bobbin.
• Widen the space in the hook
driving shaft coupling, then re-
move the hook driving shaft
saddle.
0.3 to 0.4 mm is provided be-
tween the moving knife
the inner hook by moving the
moving knife shaft
down.
turn and connect it to the termi-
nal board while routing it along
the back of the solenoid
that time, take care not to allow
the lead to come in contact with
the plunger shaft
may inter-
and
up and
a clockwise
. At
.