Scissor Drive Bar - Pfaff 3734-2/01 Instruction Manual

12.

Scissor drive bar

05.14
Requirements
1. In its starting position the scissor must be flush with the needle plate contour.
2. At the TDC of the drive bar 2 there must be a safety clearance of at least 0.3 mm
between pin 5 and the top end of the cam guide.
Fig. 12 - 31
● Bring the needle bar to BDC and activate the engaging lever by hand.
● Bring drive bar 2 to its top point of reversal by turning the handwheel.
● Carry out the alteration on the drive bar 2 ( screw 1 ), the eccentric sleeve 3 ( screw 4 )
and/or the eccentric pin 5 ( screw 6 ) in accordance with the requirement.
● Check the requirement from chapter 12.05.13 Eccentric sleeve.
● Bring the trimming device to its starting position using the handwheel.
4
3
5
5
6
2
Adjustment
1
12 - 35