Adjustment
2.17 Tension release of needle thread
Requirements
1. When the thread trimming unit is in resting position, trip 5 should be engaged and at
a distance of 0.5 mm from the release cone 1.
2. When trip 5 is positioned at the highest point of the release cone 1, the tension disks
should be spaced at a mimimum of 0.5 mm from each other.
2 - 14
● Turn release cone 1 (nut 2) in accordance with requirement 1.
● Lower the presser foot onto the needle plate.
● Pull out the thread from between the tension disks.
● Pull down linkage 3 (screw 4) until you feel it stop.
● Position the needle bar at b.d.c and activate the engaging lever manually.
● Turn the hand wheel until trip 5 is positioned at the highest point of release cone 1.
● The tension disks now have to be spaced at a minimum of 0.5 mm from each other.
● Bring the rock shaft back to its starting position by turning the hand wheel.
● Trip 5 now must be engaged, the needle thread must be under full tension.
● Grease release cone 1 slightly.
Fig. 2 - 13
2-14
24V = 4% ED
0.5 mm
0.5 mm
2
1
5
4
3
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