Squaring Of The Hook Block To The Material Support Plate - Duerkopp Adler 558 Service Instructions Manual

18. Squaring of the Hook Block to the Material Support Plate

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1
The hook block must, during sewing of both buttonhole rows, thus also
after it turns in the buttonhole eye by 180°, lit at a right angle to edge
1 of the material support plate.
The measurement is made with an angle. It should not be made in the
end position, but rather in the middle of the right and left buttonhole
seam.
Caution Risk of Injury !
Pull the mains plug before setting.
–
Remove the clamping plates.
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Close the clamp operating lever.
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Remove the spreader stops, spreader and hook.
Remove the cutting knife, Cutting block and needle plate.
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Turn on the main switch.
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Turn on the machine and turn off again with the hand switching
lever when about half of the right buttonhole seam has been sewn.
–
Place the angle on the hook block and check the angle setting to
edge 1 of the material support plate.
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Turn on the machine again and, after the turning of the hook block,
stop about in the middle of the left buttonhole seam.
The turning movement of the hook block must be exactly 180°.
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Loosen nut 4 and, by setting the bolt 5 higher or lower, set the
exact half rotation.
–
Check the right angle in both positions of the hook block through a
trial run and correct if necessary. korrigieren.
5
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Loosen the screw on the toothed quadrant 5.
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Set the toothed quadrant 5 so that the hook block lies precisely in
a right angle to edge 1.
ATTENTION !
The toothed quadrant 4 must, in both positions of the hook block, grip
with an equal number of teeth into the spur wheel.
–
With an incorrect insertion swing out the toothed quadrant and
reset.