1
Contents 1
Foreword 3
Notes on the sewing machine 4
Specifications 5
Dismantling the housing 9
Service Manual
Feeding System
1. Adjustment of the flat-toothed belt tension 17
2. Adjustment of feed dog in sideways direction for Pfaff Expression 2014 18
2a. Adjustment of feed dog in sideways direction for Pfaff Expression 2024 - 2044 20
3. Timing of feed motion 22
4. Adjustment of feed dog height 24
5. Adjustment of synchronizer 26
6. Adjustment of presser foot height 28
7. Adjustment of top feed foot in sewing direction 29
8. Adjustment of top feed height 30
Zigzag mechanism
9. Adjustment of needle in needle hole 32
Stitch forming parts
10. Position of needle in needle hole in sewing direction 35
11. Adjustment of hook-to-needle clearance 38
11a. Adjustment of bevel gears 39
12. Sewing hook timing 40
13. Adjustment of needle bar height 42
14. Adjustment the bobbin case position finger 43
Stitching off
15. Adjustment of needle threader 44
16. Adjustment of bobbin winder stop 45
17. Adjustment of bobbin thread tension 46
18. Adjustment of needle thread tension 46
19. Adjustment of thread check spring stroke 48
20. Adjustment of equal forward and reverse stitch length for Pfaff Expression 2014/2024 50
21. Adjustment of equal forward and reverse stitch length for Pfaff Expression 2034/2044 52
22. Making up a sewing sample 54
Repair instructions
23. Dismantling and assembling the needle thread tension 55
24. Changing the torsion spring in handwheel 56
25. Dismantling and assembling sewing hook 58
26. Cleaning and oiling the machine 58
27. Changing the flat-toothed belt 60
28. Changing the bevel gears 66
29. Changing the base circuit board 70
30. Changing the upper circuit board on front housing panel 72
31. Changing the control board with keys 74
32. Changing the key-pair panel 76
33. Changing the synchronizer circuit board 78
34. Changing the motor 80
35. Changing the cable in the foot control 82
36. Changing the top stepping motor 84
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