Adjustment
13 - 41
6
5
2
4
3
1
0.3 mm
6
4
Fig. 13 - 37
●
Bring the needle bar to BDC and activate the tripping lever by hand.
●
Loosen screws
1
and
2
.
●
Turn the handwheel in the direction of rotation until rock shaft
3
is at its left point of
reversal.
●
Move tripping lever
4
and back-racking lever
5
in accordance with
requirement 1.
●
Turn tripping lever
4
in accordance with
requirement 2.
●
In this position and observing
requirement 1
, tighten screw
1
.
Screw
2
remains loosened for the following adjustment.
13.
07.08
Scissor tripping-lever in relation to the control cam of the scissor
Requirements
At the left point of reversal of the rock shaft
3
1. the roller of tripping lever
4
and the roller of back-racking lever
5
must be in the middle
of control cam
6
and
2. there must be a distance of
0.3 mm
between the roller of tripping lever
4
and the
external circumference of control cam
6
.