Thread Take-Up - JUKI TL series Service Manual

6. Thread take-up

Preparation
○ Remove arm cover asm.
○ Remove face plate mas. asm.
○ Remove presser bar.
○ Remove needle bar.
Disassembly
○ 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.
7. Reverse feed stitch lever
Preparation
○ Remove belt cover.
❸ Reverse feed stitch
lever mas. asm.
Disassembly
○ Remove ❶ spring from arm.
○ Remove two ❷ setscrews.
○ Remove ❹ lever arm from the slot
of ❺ regulator when removing ❸ .
8. Idler
Preparation
○ Remove belt cover.
Disassembly
○ Remove ❶ setscrew and remove
idler asm.
❸ Thread take-up
supporting shaft
❹ Needle bar crank
❺ Thread take-up
Assembly
○ 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.
❺ Feed regulator
❶ Reverse feed
stitch lever spring
❷ Reverse feed stitch lever setscrew
SM5040855SN
Assembly
○ Attach ❸ lever and set with ❷
setscrews.
○ Hook lever spring ❶ to lever arm
❹ .
Assembly
○ 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.
8
–
❶ Thread take-up supporting shaft setscrew
SM8050602TP
○ 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.
○ Set ❹ lever arm to the slot of ❺
regulator.
❷ Convex portion of idler installing plate
❶ Idler setscrew
SM5040855SN
○ Belt tension can be changed only
by removing belt cover. Move ❷
convex portion to the left or right.
–
❻ Thread take-up
support
❷ Needle bar
crank setscrew
Point
❹ Reverse feed
stitch lever arm
Point
Point