Pfaff expression 2044 User Manual

Service Manual
1st edition November 2002
expression
2014, 2024, 2034, 2044
german engineering

Pfaff expression 2044 Specifications

General

Type	Computerized Sewing Machine
Brand	Pfaff
Model	expression 2044
Free Arm	Yes
Bobbin Type	Class 15
Stitch Options	Over 200
Presser Feet	Snap-on
Built-in Stitches	44
Feed System	Integrated Dual Feed (IDT)

Summary

Dismantling the Housing Cover

Feeding System Adjustments

1. Adjustment of the flat-toothed belt tension

Adjusting belt tension for proper machine operation.

2. Adjustment of feed dog in sideways direction for Pfaff expression 2014

Aligning feed dog position within the feed slot for the 2014 model.

2a. Adjustment of feed dog in sideways direction for Pfaff expression 2024 - 2044

Aligning feed dog position within the feed slot for 2024-2044 models.

3. Timing of feed motion

Setting the correct timing for the feed dog's movement.

4. Adjustment of feed dog height

Setting the vertical position of the feed dog teeth.

5. Adjustment of synchronizer

Aligning the synchronizer for correct machine function.

6. Adjustment of presser foot height

Setting the correct height for the presser foot.

7. Adjustment of top feed foot in sewing direction

Positioning the top feed foot relative to the feed dog.

8. Adjustment of top feed height

Setting the vertical position of the top feed foot.

Zigzag Mechanism Adjustments

9. Adjustment of needle in needle hole

Centering the needle within the needle plate hole.

Stitch Forming Parts Adjustments

10. Position of needle in needle hole in sewing direction

Ensuring correct needle placement relative to the feed slot.

11. Adjustment of hook-to-needle clearance

Setting the precise gap between the hook and needle.

11a. Adjustment of bevel gears

12. Hook timing

13. Adjustment of needle bar height

14. Adjustment of bobbin case position finger

Stitching Off Adjustments

15. Adjustment of needle threader

17. Adjustment of bobbin thread tension

18. Adjustment of needle thread tension

20. Adjustment of equal forward and reverse stitch length for Pfaff expression 2014 / 2024

21. Adjustment of equal forward and reverse stitch length for Pfaff expression 2034 / 2044

Repair Instructions

23. Dismantling and assembling the needle thread tension

24. Changing the torsion spring in handwheel

25. Dismantling and assembling the sewing hook

26. Cleaning and oiling the machine

27. Changing the flat-toothed belt

28. Changing the bevel gears

29. Changing the base circuit board

30. Changing the upper circuit board on front housing panel

31. Changing the control board with keys

33. Changing the synchronizer circuit board

34. Changing the motor

35. Changing the cable in the foot control

36. Changing the top stepping motor

37. Changing the lower stepping motor

38. Changing the buttonhole sensor

39. Changing the thread monitor with free-arm cover on model 2044

40. Changing the needle threader

Safety Test Procedures

46. Electrical safety test

General requirements and regulations for electrical safety testing.

47. Electrical safety test with ABB Metrawatt M 5013

Specific steps for electrical safety testing using the M 5013 appliance.

48. Measures required in case of inadmissible test readings

Actions to take when safety test readings are out of tolerance.