Stepping Motor, Stitch Length And Crankshaft - Fritz Gegauf Bernina artista 630 Service Manual

4.15 Stepping motor, stitch length and crankshaft

Disassembly:
1. Remove covers.
2. Remove balance shaft (28)
including screw (29).
3. De-hook tension springs (30-34)
and remove P-Print plug (146)
(p. 26).
4. Remove both securing screws
(35) of the motor bracket (36).
5. Remove bushing support (37)
including screws (37a) and
crankshaft.
6. Replace crankshaft if
necessary.
7. Remove motor bracket.
8. Remove drive pinion (40)
including screw (40a).
9. Remove the two securing
screws (41 p.26)
10. Replace stepping motor.
30
29
36
35
167
37
31
Service-Manual_artista_630_640_english_V4.01_032069_50_04.doc
35
39
33
37a
28
38
34
32
33