Stitching Off; Adjustment Of Needle Threader - Pfaff performance 2054 Service Manual

Stitching off

17. Adjustment of needle threader

Requirement:
With the threader key pushed fully down, prong 66 must pass through in the center between the top and
bottom edge of the needle eye of a needle size Nm 70 (fig. 40).
Check:
• Insert a new needle system 130/705 H, size Nm 70.
• Switch on the machine (stitch program 01).
• Set the machine at top needle position by briefly pressing the foot control.
• Push threader key 67 fully down (Fig. 41 and 42).
• Carry out a visual and functional test.
Height adjustment:
• Loosen the screw on the face cover and remove face cover.
• Press threader key 67 fully down and hold it in this position (fig. 41).
• Loosen allen screw 68 by only a 1/4 of a turn.
• Push the complete threader bar frame 69 either upwards or downwards until prong 66 has the same
clearance to the top and bottom edge of the needle eye (fig. 40).
• Tighten allen screw 68 in this position (fig. 41).
Cross-check 1:
• Using threader key 67, move the needle threader up and down.
Whilst doing so, carry out a visual check of the prong height.
• When the threader key is pushed down, pin 70 must pass completely through the diagonal guide slot
and rest on the upper end.
Lateral adjustment:
• Using threader key 67, place threader prong 66 at the front in the needle eye.
• Loosen screw 71 by only 1/8 of a turn (fig. 42).
• Push the threader bar frame either to the left or right until the prong is in the exact middle of the
needle eye.
• Tighten screw 71.
Cross-check 2:
•
Activate threader key 67 (fig. 41).
Whilst doing so, carry out a visual check of the lateral position of the prong.
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