Adjustment Of Top Feed Height - Pfaff performance 2054 Service Manual

8. Adjustment of top feed height

Requirement:
In its highest working position the top feed foot must be 2 mm higher than the lower edge of the zigzag
foot sole.
Note:
This adjustment must only be carried out when the height of the presser bar is set correctly.
Check:
• Raise the presser bar lifter.
• Insert the zigzag foot sole.
• Engage the top feed.
• Turn the handwheel until the needle bar is in 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 the presser foot gauge (63-114 690-39) from behind under the zigzag foot
and into the cutouts of the needle plate.
• Lower the presser bar to its normal raised position.
• Press the top feed lightly downward.
• Check that the top feed foot rests only lightly on the presser foot gauge and has no play.
Adjustment:
• Loosen screws 37 and 39 (fig. 20).
• Push counter bearing 44 lightly downward until the top feed foot rests lightly on the presser foot
gauge.
• Tighten screw 37 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.
• Turn the handwheel until needle bar 45 is in its top position.
• Set guide piece 46 at a clearance of 0.2 mm from cross head 47 (fig. 21).
• Tighten screw 39 (fig. 20).
Cross-check:
•
Turn the handwheel and check for clearance of 0.2 mm.
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