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6. CHANGING PROCEDURE OF THE PEDAL TYPE
(1) Parts necessary for change
Part No.
Description
Q’ty
M4009351000A
Spring shaft B
1
M4011351000
Return spring B
2
M4012351000
Return pressure adjusting screw
1
M2010110000
Return pressure adjusting nut
1
(2) Attaching parts
1. Loosen return pressure adjusting nut
in the
pedal sensor A asm. remove return pressure ad-
justing screw
, remove return spring A
, and
replace it with the return spring B. Then, assemble
and
.
2. On side
of pedal sensor B asm., assemble
spring shaft B, return spring B, return pressure
adjusting screw and return pressure adjusting nut
in the same manner as side
.
Caution) Apply grease to the shaft sections of
sections
and
when assembling.
Pedal sensor B asm.
Perform to stop loosening
with adjusting nut.
Height of screw
(1
1 mm)
28mm
27mm
Pedal sensor A asm.
(3) Adjusting pedal depressing pressure
Perform adjustment of the height of spring changed
for the pedal type automatic presser foot lifter (PFL)
Adjust with return pressure adjusting screw
so
that the length of spring on side
in the figure should
be 27 mm and that the length of spring on side
in
the figure should be 28 mm. After the adjustment of
height, tighten return pressure adjusting nut
so
that return pressure adjusting screw
should not
become loose.
