JUKI TL Series, Руководство по обслуживанию

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8
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7. Reverse feed stitch lever
Preparation
○ Remove belt cover.
8. Idler
Preparation
○ Remove belt cover.
6. Thread take-up
Preparation
○ Remove arm cover asm.
○ Remove face plate mas. asm.
○ Remove presser bar.
○ Remove needle bar.
❷
Convex portion of idler installing plate
❶ Idler setscrew
SM5040855SN
❺ Feed regulator
❶ Reverse feed
stitch lever spring
❹ Reverse feed
stitch lever arm
❷
Needle bar
crank setscrew
❺ Thread take-up
❶ Thread take-up supporting shaft setscrew
SM8050602TP
❸
Thread take-up
supporting shaft
❹ Needle bar crank
❻ Thread take-up
support
❸ Reverse feed stitch
lever mas. asm.
❷ Reverse feed stitch lever setscrew
SM5040855SN
Disassembly Assembly Point
○ Loosen ❶ setscrew.
○ Loosen two ❷ setscrews.
○ Draw out thread ❸ take-up sup-
porting shaft.
○ Remove ❺ and ❻ together with
❹ needle bar crank.
○ Set needle bar crank to thread
take-up, attach it onto main unit
and tighten setscrews (2 pcs.).
○ Set ❻ to ❺ , enter thread take-
up supporting shaft ❸ to ❻ , at-
tach it onto frame and tighten ❶
setscrew.
○ Tighten setting portion (flat por-
tion) of needle bar crank with
screw No. 1.
○ Press ❸ shaft to frame side while
viewing the torque and tighten ❶
setscrew.
Disassembly Assembly Point
○ Remove
❶
spring from arm.
○ Remove two
❷
setscrews.
○ Remove
❹
lever arm from the slot
of
❺
regulator when removing
❸
.
○ Attach
❸
lever and set with
❷
setscrews.
○ Hook lever spring
❶
to lever arm
❹
.
○ Set
❹
lever arm to the slot of
❺
regulator.
Disassembly Assembly Point
○ Remove ❶ setscrew and remove
idler asm.
○ Assemble idler and tighten it with
❶ setscrew.
○ Belt tension : Belt sags 6 to 7
mm when center of the belt is
applied with a 1.96N load.
○ Belt tension can be changed only
by removing belt cover. Move ❷
convex portion to the left or right.