Advancing Movement Of The Feed Dogs - Duerkopp Adler 550-12-12 Service Instructions Manual

3.5 Advancing Movement of the Feed Dogs

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The advancing movement of the feed dogs is determined by the
position of the cams 1 and 2 on the lower shaft.
The setting of the advancing cams is made with gauge 3
(Order no. 933 000758).
Caution Risk of Injury !
Turn off main switch before adjusting.
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Arrest the machine head in position C (3 notches visible).
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Loosen the screws on advancing cam 1.
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Insert gauge 3 in the slit of the advancing cam.
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Turn the advancing cam in the direction of machine turn so that the
edge of gauge 1 touches the stitch regulator guide 4.
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Tighten the screws on the advancing cam 1.
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Set advancing cam 2 as described above.
–
Check to see that there is no relative movement made between the
top feed foot and the differential feed dog during the transport
process. If this is the case then the position of the advancing cams
1 and 2 must be corrected.
–
Check stitch length (see 3.2).
1
2
3
4