Thread Check Spring And Thread Regulator - Pfaff 3371-1 series Adjustment Manual

14

Thread check spring and thread regulator

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Requirement
1. The thread check spring 1 should have a 6 – 8 mm stroke.
2. Screw 4 should be positioned in the centre of the slot of thread regulator 3.
Fig. 14 - 21
Adjust thread check spring 1 (screw 2) in accordance with requirement 1.
Move thread regulator 3 (screw 4) in accordance with requirement 2.
3
1
Turn pin 5 to adjust the thread spring resistance. All settings of the thread check
spring 1 depend on the material and might have to be corrected to achieve the
desired result.
Adjustment
4
5
2
14 - 24