J Adjustment Of The Corner Stitching Device "0" Position; K Adjustment Of The Corner Stitching Device / Height Of The Needle Bar - Mitsubishi Electric LT2-2250-B1T Instruction Manual

HOW TO USE
J Adjustment of the corner
stitching device "0" position
( 1 ) When the stop lever is set "0" position, adjust
so that the gap A and B between the cam
and two hinged pins of the needle bar guide
bracket are equal as follows.
① Rough adjustment:
Adjust so that the center distance
between two holes of the stud bolt is 115
mm by loosening the nut and turning the
stud bolt.
② Fine adjustment:
Loosen the guide pin set screw Ⓐ , and
set so that the gap A and B between the
cam and two hinged pins are equal.
( 2 ) After adjusting, move the stop lever to "L"
or "R" position, and check that the corner
stitching device work correctly.
K Adjustment of the corner stitching
device / height of the needle bar
If one needle stop isn't working correctly in "L" or "R"
position, adjust height of the needle bar as follows.
( 1 ) Remove the face plate and the rubber plug.
( 2 ) Move the needle bar to the position where
the screw of the needle bar crank rod is able
to be adjusted by turning the pulley.
( 3 ) Loosen the screw.
Note: Be careful not to loosen the screw too much.
( 4 ) Turn the pulley and stop it at the position where
the needle bar comes to the highest position.
( 5 ) Adjust the eccentric bushing, and tighten the screw.
Working contents
When one needle stop isn't enough
(When the stopping needle bar fallen)
○When the needle bar that stopping wobbled
○When the small needle bar clamp contact
the rubber cushion of the needle bar guide
bracket strongly and the machine torque
become heavier
Guide pin
Needle bar guide bracket
Set screw
Needle bar crank rod
Screw
Rubber plug
Eccentric bushing
Lift the
needle bar
Notch
Notch
Lower the
needle bar
— 15 —
Stud rod
Nut
Nut
C
C
Hinged pin
Ⓐ
Guide pin
Cam
A
B
Hinged pin
CC-cross
section
Needle bar
guide bracket
Rubber cushion
Small needle
bar clamp
Needle bar
How to adjust
Lower a notch of the
eccentric bushing.
Raise a notch of the
eccentric bushing.
Stop lever