Lifting Motion Of The Feeding Foot - DURKOPP ADLER 767 Service Instructions Manual

7.2.2 Stroke motion of the feeding foot
2 3
4
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Caution: Danger of injury !
Switch off main switch.
Check and adjust stroke motion of the feeding foot only when sewing
machine is switched off.
Adjustment preconditions
–
Feeding foot and presser foot stroke correctly adjusted
–
Stroke motion of feed-dog correctly adjusted
Standard checking
The feeding foot moving downwards must reach the throat plate level
simultaneously with the feed-dog moving upwards and the needle going
down.
–
Set stitch length "0".
–
Set maximum sewing foot stroke (setting wheel in position "max.").
–
Turn handwheel in travel direction and observe stroke motion of
feeding foot.
Correction
–
Remove plastic cover 4 from the arm cover.
–
Loosen both core pins 1 at the stroke eccentric 2.
–
Move point of the down-going needle to feed-dog height by
handwheel.
–
Twist stroke eccentric 2 on shaft in such a way that the feeding foot
rests on the feed-dog.
Attention!
The stroke eccentric 2 must not be shifted axially on the shaft when
being twisted.
Through the drill-hole in the stroke eccentric 2 other sewing
machine components are supplied with oil. Therefore the capillary
tube 3 with the wick must touch the lubrication groove in the stroke
eccentric.
–
Tighten core pins 1.
–
Reinsert plastic cover 4 in arm cover.
1
2
3