Bobbin Winder - Pfaff 487 Service Manual

2.

Bobbin winder

29
Requirement
1. When the bobbin winder is engaged the winder spindle must be driven reliably, but
when it is disengaged, friction wheel 5 must not rest against drive wheel 1.
2. The bobbin winder must switch itself off when the amount of thread wound is about
1 mm from the edge of the bobbin.
2
Fig. 2 - 27
Position drive wheel 1 (screws 2) according to Requirement 1.
Place a bobbin on the bobbin winder, thread the bobbin and switch on the winder.
To adjust the amount of thread wound, position adjusting pin 3 (screws 4) according to
Requirement 2.
1
5
4
3
Adjustment
1 mm
2 - 28