Adjusting The Position Of The Moving Knife - JUKI LH-3500A Series Instruction Manual

6-9. Adjusting the position of the moving knife

WARNING :
To protect against possible personal injury due to abrupt start of the machine, be sure to start the
following work after turning the power off and ascertaining that the motor is at rest.
E
C
❷
❶
❸
❹
❶
❺
❻
❼
D
B
❷
❶
Operator's
side
❹
– 40 –
1) Loosen clamp screw ❹ in the rear of machine
bed and adjust so that the distances B and C
between the top end of moving knife ❶ and the
center of needle ❸ at the time of waiting become
the dimensions as shown in the list below when
the feed pitch is minimum and needle ❸ is in the
lower dead point.
Left knife
B (D Reference value) C (E Reference value)
LH-3528A-7
6.2 (3.5)
LH-3568A-7
LH-3578A-7
7.3 (4.1)
LH-3588A-7
2) Set clearance D between moving knife ❶ and
protrusion ❺ of the inner hook to 0.3 ± 0.1 mm.
Loosen moving knife setscrews ❻ and ❼ , and
adjust the clearance.
Right knife
7.5 (2.7)
8.9 (3.1)