Removal Of The Main Shaft Motor And Coupling - JUKI LK-1900B Series Engineer's Manual

(2) Removal of the main shaft motor and coupling

WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
1. Removal of the main shaft motor together with coupling
Loosen the two setscrews ❺ on the main shaft side of the coupling ❷ . Then, remove the four motor
setscrews ❹ .
2. To remove the coupling ❷ from the main shaft motor ❸ , loosen the two setscrews ❻ on the main shaft
side.
(Caution) Turn the main shaft ❶ in the direction of forward rotation A. The screw (hole) that can be
seen first is the No. 1 screw. Loosen the screws, starting with the No. 2 screw. Tightening
should be done, starting with the No. 1 screw.
Procedures of disassembling
No. 2 screw
Flat section
No. 1 screw
– 10 –
No. 1 screw
0.5 mm
Cord