JUKI AMS-221EN Series Engineer's Manual page 85

Adjustment Procedures
1. Hold the head grip
maintenance position. Turn the stopper release lever
of the arrow.
2. Confirm that the gas spring
A.). Using a minus screwdriver and a wrench, remove the nut
the hinge screw .
3. Loosen the screws of the thrust collar
the collar. Pull out the shaft
4. Put a new gas spring
shaft through the lower side of the gas spring
in both sides of the gas spring
collar .
* Make sure not to hurt the rod section of the gas spring
time of reassembly work.
Fix the thrust collar
direction and confirm that the gas spring
and down. Apply Juki Grease B (Part No. 40013610) to the shaft
section and the thrust collar
5. Attach the hinge screw
the gas spring as illustrated. Fix them by means of the nut
* Apply Juki Grease B (Part No. 10013640) to the shaft section of
the hinge screw .
6. Return the stopper release lever
the reverse direction of 1.) Then, the stopper is released. Hold the
head grip and slowly return the sewing machine to its original
position.
* Confirm that the sewing machine can be lifted (from the table) at
a force of 15kg or below at the tip of the head grip
Sewing machine maintenance position
Maintenance work position (where the head support
table)
and lift the sewing machine up to the
is free (There is any ratting in direction
in two positions and remove
and remove the gas spring
in the posture as illustrated and pass the
and fix it by means of a thrust
with an opening of 0.2mm in the thrust
smoothly moves up
end plane.
, washer , and the spacer
to its original position. (Turn it in
in the direction
and
.
. Insert the spacers
at the
to the top of
.
.
touches the
– 81 –
Results of Improper Adjustment