20) A T Unit Connection/Disconnection - JUKI LK-1900B Series Engineer's Manual

(20) AT unit connection/disconnection
WARNING :
Turn OFF the power before starting the work so as to prevent accidents caused by abrupt start of the
sewing machine.
1. Remove the setscrew ❷ of the AT link unit (front) ❶ and take out the second thread tension ❸ . (Refer
to "3.-(19) Second thread tension connection/disconnection".)
2. Draw out the cotter pin ❻ from the pin block ❺ of the AT link unit (rear) ❹ . Be careful not to drop the
washer ❼ at that time.
* Work becomes easier if the main shaft motor is removed.
3. Lift the joint block ❽ of the AT unit upwards and take it off the pin block ❺ of the AT link unit (rear) ❹ .
4. Draw out the AT link unit (front) ❶ from the plane side (in the direction of the arrow E ) and remove it.
5. Remove the two setscrews ❾ and take out the AT solenoid unit  .
6. For reassembly, follow the steps of 5. to 1. above.
Close contact
Procedures of disassembling/assembling
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