Base Shaft-/Load Lock Screw Distance - Bernina B 590 Service And Maintenance Manual

• Rear view - Marking on belt edge must exactly
match marking on base (pict. E). At the same
time, hook driver must be pinnable using pinning
tool 0079937.50.00 (pict. F).
Main shaft / base shaft adjustment
•
Remove pinning tool 007937.50.00 from base
shaft (pict. C).
•
Untighten second setscrew d2 (T10) on main
shaft belt pulley in direction of rotation (pict. D).
•
Use new loop lift gauge 734571.70.01 to set
loop lift (2.618mm).
•
Untighten first setscrew d1 (T10) on belt pulley.
•
Turn belt pulley until base shaft can be pinned
against lift cam with the 3.0mm pinning tool
007937.50.00 (pict. C).
•
Retighten first setscrew d1 (T10) on belt pulley
in direction of rotation.
•
Remove gauges.
•
Retighten second setscrew d2 (T10) on belt pulley.
Base shaft / belt pulley adjustment
•
Check fitting position of belt pulley.
•
Check fitting of hook driver (see 4.4.1).

5.5.2 Base shaft-/load lock screw distance

Check:
• Measure distance between base hsaft and load lock screw
with a feeler gauge.
• The distance should be 0.15mm.
Adjustment:
• Turn screw f (T10) to set 0.15mm distance between base
shaft and load lock.
BERNINA International AG Seestrasse 161 CH-8266 Steckborn
DRAFT – VERSION
E
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Schweiz
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