PfaFF Tiptronic 2040 - 2014-2024-2034-2044%20SERVICE.pdf

expression 2014, 2024, 2034, 2044 german engineering

Service Manual

1st edition November 2002

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Page Contents

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Foreword Notes on the sewing machine Specifications Dismantling the housing

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Service Manual Feeding System 1. Adjustment of the flat-toothed belt tension 2. Adjustment of feed dog in sideways direction for Pfaff Expression 2014 2a. Adjustment of feed dog in sideways direction for Pfaff Expression 2024 - 2044 3. Timing of feed motion 4. Adjustment of feed dog height 5. Adjustment of synchronizer 6. Adjustment of presser foot height 7. Adjustment of top feed foot in sewing direction 8. Adjustment of top feed height

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Zigzag mechanism 9. Adjustment of needle in needle hole

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Stitch forming parts 10. Position of needle in needle hole in sewing direction 11. Adjustment of hook-to-needle clearance 11a. Adjustment of bevel gears 12. Sewing hook timing 13. Adjustment of needle bar height 14. Adjustment the bobbin case position finger

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Stitching off 15. Adjustment of needle threader 16. Adjustment of bobbin winder stop 17. Adjustment of bobbin thread tension 18. Adjustment of needle thread tension 19. Adjustment of thread check spring stroke 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 22. Making up a sewing sample

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Repair instructions 23. Dismantling and assembling the needle thread tension 24. Changing the torsion spring in handwheel 25. Dismantling and assembling 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 32. Changing the key-pair panel 33. Changing the synchronizer circuit board 34. Changing the motor 35. Changing the cable in the foot control 36. Changing the top stepping motor

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37. 38. 39. 40. 41. 42. 43. 44. 45.

Changing the lower stepping motor Changing the buttonhole sensor Changing the thread monitor with free-arm cover by model 2044 Changing the needle threader Self-test, foreword Self-test model 2014 and 2024 Table for self-test model 2034 Table for self-test model 2044 Fault table for electrical parts 2044

Safety test 46. Electrical safety test 47. Electrical safety test with ABB Metrawatt M 5013 48. Measures required in case of inadmissible test readings

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Foreword This service and repair manual is intended to assist you in carrying out all repairs to the machines quickly and correctly. Adjustments should only be carried out if you find the actual settings deviating from the requirements described here. When checking or adjusting a machine, please always proceed in the sequence specified. For easier reference every workstep is marked with a dot. Differing worksteps are marked with a circle or square. The indications "right", "left", "top", "bottom", "front" or "rear" always refer to the upright machine with its controls facing the operator. When assembling dismantled machines, make approximate adjustments right in the course of work. This facilitates subsequent precise adjustments. If not specified otherwise, the handwheel must always be turned to the front. Always pull out the mains plug before making repairs to live parts or in their vicinity. An electrical safety test must be carried out after every repair, including mechanical ones. According to the German law on safe machine operation of June 24, 1958, VDE regulations apply as official rules in electrical engineering and as such are basic to electrical safety tests of technical devices. The required electrical tests for appliances are set forth in Para. 4 of the Regulations for Repair, Modification and Testing of Used Electrical Devices (VDE 0701, edition 05.93). After every repair of electrical devices we manufacture, a test in