AMF S 4000 LS, Parts And Service Manual, Page: 49 / 76

S-4000 TKF, LS Omron
1-43
Released 12/2009
e-mail: service@amfreece.cz; parts@amfreece.cz; website: www.amfreece.com
Phone: +420 582 309 146 (Service), +420 582 309 286 (Spare Parts); Fax: +420 582 360 606
E - MACHINE ADJUSTMENTS
1 6 . T H R E A D T R I M M I N G
The trimming mechanism ensures the correct thread trimming after sewing the
last stitch. The trimming hook moves in the direction of the arrow, both thread
loop legs A and B are pulled forward. When the thread hook approaches the
end of the stroke, leg A contact the trimming knife, cutting the thread.
1. T r im m in g c y l in d e r a d j u s t m e n t
a) tilt the machine head onto the rest pin and close the air supply.
Extend the piston
➊
of the cylinder
➋
to the maximum position.
b) check to be certain that the cylinder does not push the lever
➌
too
high and into contact with the bedplate casting
➍
. If no clearance
exists, adjust as described in c, d, and e below:
c) loosen the screw
➏
d) to obtain the correct position of the lever
➌
, loosen the nut
➎
and turn the cylinder piston
➊
in or out as needed
e) tighten the nut
➎
and the screw
➏
. After this adjustment check if
no axial clearance exists on the shaft
➐
.
f) if the axial clearance exists on the shaft, loosen the screw
➏
,
move the shaft
➐
to the left so that the locking ring
➑
touches
the recess in the plate
➌
. Move the lever to the right and tighten the
screw
➏
.
2. T h e t r im m in g h o o k a d j u s t m e n t
a) push the piston
➊
of the trimming cylinder
➋
to the maximum
position and loosen the screw
➒
of the trimming actuator
➓
.
b) turn the trimming actuator
➓
and set the clearance 1.0 mm
between the throat plate and the point of the trimming hook.
c) tighten the screw
➒
of the trimming actuator
➓
.
d) open the air supply and check by switching the valve of the
trimming cylinder if the actuator
➓
does not hit the bedplate casting.
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