Adjustment Of Top Feed Foot Height - Pfaff Select 1520 Service Manual

8. Adjustment of top feed foot height

Requirement:
At its highest working position the top feed foot must be 2 mm higher than the lower edge of the zigzag
foot (fig. 13).
Note:
This adjustment must only be carried out when the height of the presser bar is set correctly!
Check:
Raise the presser bar lifter.
Fit the zigzag foot.
Engage the top feed.
Turn the handwheel until the needle bar is at its lowest position.
Caution: The handwheel must now no longer be turned!
Lower the feed dog.
Fully raise the presser bar lifter and hold it in this position.
At the same time, insert presser foot gauge No. 63-114690-35 from the rear under the zigzag foot and
into the cutouts of the needle plate.
Lower the presser bar lifter to its raised position again.
Press the top feed foot 28 about 2 mm upward against the pressure of the spring and release it.
Check that the top feed foot rests only lightly on the presser foot gauge and has no play.
Adjustment:
Loosen screws 24 and 25.
Push counter bearing 29 lightly downward until the top feed foot 28 rests lightly on the presser foot
gauge.
Tighten screw 24 in this position.
Cross-check:
Check for light resting and freedom of play of the top feed foot on the presser foot gauge as described
under "Check".
Adjusting the guide piece:
Fully raise the presser bar lifter and hold it in this position.
Remove the presser foot gauge.
Lower the presser bar lifter to its raised position again.
Turn the handwheel until needle bar 30 is in its top position.
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