JUKI AMB-289, Engineer'S Manual

Page: 53 / 177

– 49 –
Disassembling of the needle throwing motor and the needle bar
rocking arm
1. Remove needle, remove face plate "refer to (2) Disassembling and
assembling of the face plate.", and remove needle bar rocking base
"refer to (3) Disassembling and assembling of the needle bar rock-
ing base and the needle bar crank rod."
2. Remove side cover and rear cover .
3. Remove relay circuit board installing plate . (Connector may not
be removed. However, remove it when it is hard to perform the work.)
4. Loosen setscrew in needle throwing lever, rear .
(Caution) When removing needle throwing motor , proceed to
step 5. If not, proceed to step 9.
5. Remove setscrew in needle throwing sensor installing plate ,
and remove needle throwing sensor .
6. Turn needle throwing motor drive arm , and loosen setscrew
after setting it to the position where it is easily loosened.
7. Remove setscrew in needle throwing motor installing base ,
and remove needle throwing motor (coupling).
8. Remove setscrew in needle throwing motor , and remove
needle throwing motor .
9. Loosen setscrew in looper rocking lever .
10. Remove setscrew in needle bar cover , and take out felt
and needle bar cover .
11. Remove setscrew in needle bar square block base , and re-
move needle bar square block base .
12. Draw out needle bar rocking arm (asm.) .
13. Loosen setscrew in needle throwing connecting shaft A , and
remove needle throwing rod and needle throwing connecting
shaft A from needle throwing lever, rear .
14. Loosen setscrew in needle throwing connecting shaft A , and
remove needle throwing rod and needle throwing connecting
shaft A from needle throwing motor drive arm .
o There is washer in setscrew .
Be careful not to lose it.
o There is a flat section at setscrew
s e c t i o n o f n e e d l e t h r o w i n g
connecting shaft A
.
o There is a flat section at setscrew
s e c t i o n o f n e e d l e t h r o w i n g
connecting shaft A
.
o Needle throwing connecting shaft
A is the selective part. There
are four kinds from A to D. Select
an adaptable needle throwing
connecting shaft from among them
for use.
Procedures of disassembling / assembling Caution in disassembling / assembling