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14
N
Checking
braking
force on supply
flange.
1
Loosen
the surge takeyp
arm
and check
the brak-
ing force on the supply
flange as shown
in Fig.
. The braking
force shall
be 3.92 = 1.47N
(400
= 150gf).
or too low the reason
can
be
1. too little torque exerted
by the surge
takeup
arm
2. worn
or improperly mounted
brake shoe.
takeup
arm
using
holder XIV. Adjust
the length
of link A so that the brake shoe
just touches
the edge of the tool.
When
the brake
shoe is
adjusted correctly,
the surge takeup arm is
94 +4
from the edge of the punch.
-0
2
Measure
the torque
exert
by the, surge takeup
arm dynamically
at a point 118 - 3mm to the
left of the sidewall.
Readings
shall be taken
as
the
arm
is moved
to the left.
The
torque
shall
be 0.78 - 0.98N
(80 -100gf).
Note arrow
and di-
mension
in illustration.
Checking
sensor
arm
Loosen
the surge takeup arm
A from the retainer
magnet.
2
Check
that
sensor
arm B does
not bind.
You
should
be able to move it out easily to both
end
positions.
After
moving
the surge
take-up
arm to its
rear
end
position,
allow
it to re-
turn
carefully,
while
checking
to see
that
the sensor
arm
is moved down
toward
the centre
of the
punch.
Adjustment:
Clean
the sensor
orm
shaft
hole
and/or
replace
springC.
Checking pulling
force of winding motor
Check
as shown
in Fig.
that the pulling
force
which the winding motor
exerts
on the takeup
flange
is not less
than 9.31N
(950gf).
a. that the winding motor
is not pressing
against
the takeup
flange properly
b, that the winding motor drive wheel
is
worn
c.
that
the transmission
between
drive
wheel and capstan
is binding
or
d. the winding motor
is faulty.
wheel,
c. replace the motor mount
or d. replace
the winding
motor.
2
Check that the winding motor drive wheel
presses
against
the takeup
flange with a force of 5,88 -
8.33N (600-850gf).
Adjustment: Adjust
the position
of the motor
by
bending the motor retaining
spring.
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