JUKI IP-100A Engineer's Manual page 45

Adjustment Procedures
1) Provide a clearance of 1 mm between handwheel 1 and the
pulley cover. If the clearance is excessively narrow, the position
detecting magnet comes in contact with the synchronizer, and
if it is excessively wide, defective detection may occur.
2) Be sure to adjust screw No. 1 in the handwheel 1 to the flat
portion of the motor shaft and tighten the screws in the order
of No. 1 and No. 2.
Adjustment Procedures
1) Loosen two setscrews 1. Adjust the position by moving
automatic reverse stitching magnet 2 itself.
2) When the reverse feed lever is pressed down and plunger 3
moves in the direction a at the maximum feed amount, cushion
rubber4 should be able to slightly rotate.
Adjustment Procedures
1) If the thread tension releasing solenoid fails to smoothly move
when it is pressed in the direction A, loosen four setscrews 4
and adjust the center of thread tension releasing solenoid 5.
2) If the tension disk fails to rise when the thread tension releasing
solenoid is pressed in the direction A, check first the position
of the thread tension controller, then remove thread tension
releasing solenoid 5. Then loosen nut 6 and adjust the
position of presser plate of the thread tension releaser 1.
(Caution) Use grease tube (40006323) supplied as accessories
and periodically apply grease.
Results of Improper Adjustment
Results of Improper Adjustment
Results of Improper Adjustment
™ If the thread tension releasing
solenoid fails to be engaged with
the auxiliary pin of the thread
tension releaser, the tension disk
will not rise at the time of thread
trimming resulting in slip-off of
the thread.
™ If the thread tension releasing
solenoid fails to be engaged with
the roll pin, the return spring
lacks, or the solenoid fails to
smoothly return to its home
position, the tension disk will be
h e l d r a i s e d a f t e r t h r e a d
trimming.
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