JUKI LH-4128-7 Engineer's Manual page 45

1) Moving knife position
1. Loosen and adjust the connector screw
so that Distance between tip of the standby moving knife
of the counter knife
Dimension 4128-7
A
4168-7
4188-7
2. The clearance between the moving knife
B
shall be 0.4 ± 0.1mm. This adjustment is possible
the inner hook
by loosening the moving knife setscrews
2) Adjusting the height of the counter knife
1. Align the counter knife base
and tighten the setscrew
2. Loosen the setscrew
height with the eccentric pin
knife .
Adjustment Procedure
on the rear side of the bed
becomes identical with Dimension
3.1±0.2mm
3.3±0.2mm
3.3±0.2mm
with the plane
.
of the counter knife base
to adjust the pressure of the counter
and that
.
A
in moving phase and
and .
of the counter knife
C
and change its
– 41 –
Results of Improper Adjustment
o Any deviation from this adjusting
value can cause failure in thread
trimming due to poor thread
spreading.
o If the counter knife pressure is
too high, this can be a cause of
failure in returning to the standby
position of the thread trimmer
lock and the moving knife
o If the counter knife pressure is
too low, failure in thread cutting
may occur.
.