Adjusting Thread Trimmer -900/56; Control Cam ( Pre-Calibrating ) - Pfaff 1243 Adjustment Manual

Adjustment
13

Adjusting thread trimmer -900/56

.05
13 Control cam
.05.01
O Remove the catch 1 ( screws 2 ).
O Remove the plate 3 ( screws 4 ).
O Loosen the four screws of the control cam 5 and the screws 6 of the retaining collar 7.
O Move the control cam 5 sideways according to rule 1.
O Adjust the retaining collar 7 in this position so that it touches the control cam 5 and
O Move the thread lever to t.d.c. by turning the handwheel.
O Turn the control cam 5 in the direction of rotation according to rule 2, ensuring that it
O Tighten the four screws of the control cam 5 in this position.
24
( pre-calibrating )
Rule
1. The bearing surface of the control cam 5 should be positioned centrally to the pawl
8 on the side.
2. When the thread lever is at t.d.c., the start of the largest eccentricity of the bear-
ing surface ( in the direction of rotation ) should be under the tip of the pawl 8.
5
6
8
8
5
Fig. 13 - 19
tighten the screws 6.
rests on the retaining collar 7.
7
5
2
8
4
1
3