JUKI LK-1900A MAIN SHAFT ASSEMBLE & DISASSEMBLE

Main shaft connection/disconnection:

  1. Loosen the set screw (2) of the main shaft counterbalance (1) through the screwdriver hole A, then remove the taper screw (3).
  2. Loosen the two set screws (4) (through the screwdriver hole B), and also the two each of (5) and (6) At that time, loosen the second set screw first. The first set screw should be removed completely from the flat part of the main shaft (7)
  3. 3. Remove the main shaft motor (8) Refer to “(2) Removal of the main shaft motor and coupling.”

  1. Loosen the two set screws (10) Pay attention to possible injury at that time because the balancer (11) begins to turn when the set screw (10) is loosened.
  2. Loosen the two set screws (12) At that time, the first set screw of the set screw (12) should be removed completely from the flat part of the main shaft (7).
  3. Loosen the two set screws (13) and the two set screws (14).
  4. Draw out the main shaft (7) in the direction of the Arrow C.

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