JUKI TL Series, Руководство по обслуживанию

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11
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13. Hook driving shaft pulley
Preparation
○ Remove outer components.
(Excluding stop solenoid)
○ Loosen idler.
○ Remove needle.
❽ E-ring groove
❻
❹
❺
Moving knife roller arm
Thread trimmer cam
❷ Hook driving shaft pulley eccentric shaft setscrew
SM8040602TP
Hexagon 2.0 mm
❺ Hook driving shaft pulley eccentric shaft
❾ Thread trimmer cam screw No. 1
❸ Hook driving shaft pulley E-ring (E-6)
❻ Hook driving shaft pulley
eccentric shaft bushing
Slit on ❹ hook driving shaft pulley
eccentric shaft
❶ Timing belt
(Illustration of hook driving shaft pulley)
A B
Make ❼ hook driving shaft pulley
come out downward.
Disassembly Assembly Point
○ Remove timing belt from main
shaft pulley.
○ Remove
❶
belt and loosen two
❷
setscrews.
○ Remove
❸
E-ring and turn
❹
to
find a place where backlash in
hook driving shaft pulley is large.
○ Press
❺
and push out
❻
bush-
ing to the right side.
○ Draw out
❺
and
❻
, and remove
❼
following the point of
❼
.
Do not make a flaw on ❽ E-ring
groove when removing ❸ E-ring.
○ Enter hook driving shaft
❼
pulley.
○ Enter eccentric
❺
shaft and
❻
.
○ Set
❸
E-ring.
○ Remove the play in hook driv -
ing shaft with
❻
and tighten
❷
setscrew B.
○ Turn
❹
shaft slit to adjust
backlash in pulley and tighten
❷
setscrew A.
○ Set
❶
belt.
Adjust backlash in eccentric
shaft by right rotation.
When setting
❻
bushing, do not
make a flaw on the end face of
bushing.
When setting belt onto main shaft,
refer to thread trimming timing.
(Simple method)
○ Lower needle bar 1.95 mm from its
upper dead point.
○ Turn hook driving shaft and orient
❾
screw No. 1 to this side (just front).
○ Enter contact of roller arm to
groove of cam.
○ Turn hook driving shaft in the re -
verse direction and set belt at the
position where it stops.