Artista 640 Rh Hook, Synchronization, Feed And Needle Drive - Fritz Gegauf Bernina artista 630 Service Manual

5.16 artista 640 RH hook, synchronization, feed and needle drive

Standard:
Remove covers. Use pinning tool 030 349.70.00 to pin needle drive balance piece. Then use tool 007
937.50.00 to pin base shaft. The base shaft must be able to be pinned in this position.
st
1 Correction:
Base shaft / needle drive balance piece pinning position.
•
Loosen two screws (78a) on drive belt flange (78).
•
Pin needle drive balance piece.
•
Rotate base shaft until it can be pinned.
Base shaft cylinder cam (flute) must face the front.
•
Tighten the two screws (78).
Standard:
Needle / hook tip pinning position
•
Remove covers.
•
Pin needle drive balance piece (pinning tool 030430.51.00),
stitch width stepping motor and base shaft (needle position
center).
•
With rear view, the hook tip must be flush with the right hand
•
needle edge.
Needle drive balance piece
pinning position. The
cylindrical end of the new
pinning gauge 030 430.51.00.
must be against the frame.
Rear view
Service-Manual_artista_630_640_english_V4.01_032069_50_04.doc
Base shaft pinning
position. Pinning
gauge 007 937.50.00
Cylinder flute must
face front.
Into the needle drive
balance piece
a-640
78
78a
53