JUKI LU-2810 Series, Engineer'S Manual

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Adjustment procedures Results of Improper adjustment
3) Automatic presser foot lifter (Machine with thread trimmer
only)
1. Turn the power ON. Carry out thread trimming once. Turn ON
the automatic presser foot lifter.
2. Remove rubber cap
1
from the rear face of the machine arm.
Loosen clamping screw
6
of the automatic presser foot lifter
arm.
3. Adjust the lifting amount to 19 to 20 mm in the state that the
lifter plate
3
is in contact with the spring receiving
2
.
At this time, place a thing thickness of which is 20 mm between
the top surface of throat plate
4
and the under surface of
presser foot
5
to facilitate adjustment.
4. Tighten clamping screw
6
of the automatic presser foot lifter
arm in the state of step 3.
5. Remove the 20 mm thick thing placed between the top surface
of throat plate
4
and the under surface of presser foot
5
.
6. Attach rubber cap
1
from the rear face of the machine arm.
(Caution) For the standard gauge type machine, the walking
foot interferes with the needle bar when the amount
of the alternating vertical movement of the walking
foot and the presser foot is set at 6.5 mm or more.
To use the machine with the amount of the alternat-
ing vertical movement is set at 6.5 mm or more, set
the lifting amount of the automatic presser foot lifter
at 16 ± 0.5 mm.
When the lifting amount is higher
than the specified value :
o
The top end of the needle bar
interferes with the walking foot
and the walking foot may be
damaged when the presser foot
is raised.
When the lifting amount is lower
than the specified value :
o
The presser foot is not suffi -
ciently raised and the working
property may be deteriorated
海外講習会用121122 LU-2810(-7)̲EM