JUKI AMB-289 Engineer's Manual page 35

Adjustment Procedures
1. To remove sensor 1, remove two setscrews 2.
2. Fix sensor 1 with setscrew 2 at the position where sensor
is returned to the front by 0.5 to 1 mm from the position where
sensor 1 lights and goes off at the position where the chuck
fully closes in the state that the button is not placed in the
chuck.
3. To replace chuck open/close cylinder
remove loader unit 4 first. To facilitate this work, remove loader
unit 4 beforehand.
4. To remove loader unit 4, remove the power cord and the
sensor cord at the position of the relay cord. (The position is in
the rear of the motor section.)
5. Loosen two setscrews 5 and remove loader unit 4.
6. Loosen setscrew 7 and remove differential feed guide
7. Loosen fixing screw 9 of presser lifter shaft
presser lifter bracket !0 .
8. Remove four screws !1 located on the both sides of the chuck
unit, and remove the unit.
9. Loosen nut !3 and adjust so that the clearance between
knuckle !2 and cylinder 3 is 26 ± 0.5 mm.
10. Supply air and adjust with the speed controller so that the
motion is not shocked largely at the time of open/close.
1
3, it is necessary to
6.
8, and remove
− 31 −
Results of improper Adjustment
™ Do not adjust except when the
motion is shocked largely since
adjustment has been performed
at the time of delivery.