Needle Thread Tension Release - Pfaff 3827-4/33 Instruction Manual

12

Needle thread tension release

.06.05
Requirement
1. At the rear reversal point of the thread catcher, trip 4 must be engaged and at a
distance of 0.5 mm from control cam 5.
2. When the tip of trip 4 is at the highest point of the control cam 5, the tension disks
must be a minimum of 0.5 mm from each other.
1
Fig. 12 - 34
99-2-05
Push in piston rod 1 manually as far as possible.
Adjust the distance between trip 4 and control cam 5 in accordance with requirement 1
by turning screw 2 (nut 3).
Lower the sewing foot onto the needle plate.
Pull down linkage 6 (screw 7) until you feel it stop (requirement 2).
Connect the thread trimmer to the pneumatic network.
0,5 mm
0,5 mm
4
3
2
5
Adjustment
6
7
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