HappyJapan HCH-701-30, Maintenance Manual

Page: 33 / 171

33
Exchange of take-up lever cam
3-2-6
１
.
Referring to [3-2-1 Exchange of crank],
pull out upper shaft
２
. Remove take up lever cam.
3. Remove fasten collar.
4. Put good parts back in reverse order.
For adjustment of fixing of each unit, please refer to
process to adjust fixing of each unit.
<Important> Pay attention to following (1) - (5)
(1)Please fix upper pulley, crank ass’y
on flat surface of upper shaft with screw tightly.
(2)
Please push the Upper shaft to arrow marked direction
and make sure that Upper shaft collar are attached
without space from machine body.
Upper shaft collar
(3) Position of upper pulley is space from upper
shaft
collar.
(4) Confirm that belt is not interfere the pulley flange and
not come out from pulley groove.
(5) Please insert the Barrel cam into the Fasten collar first,
then assemble it to the Upper shaft.
5. Please check and adjust the following timing to finish.
(1)
lowest needle point
(2) upper shaft timing (L point, C point)
(3)Take-up lever timing
(4)Shuttle hook timing
(5)Jump device
(6)Needle height (7)
pressure foot
12mm