Pfaff 900/51, Руководство по обслуживанию, Страница: 7 / 24

Adjustment
2-02
24V = 4% ED
2
.05
Pre-adjusting the control cam
Requirements
At the t.d.c of the needle bar,
1. the beginning of the highest point of the trip of the control cam
6
sould be positioned
under the tip of pawl
8
and
2. the right-hand side of the trip should be flush with the right-hand side of pawl
8
.
●
Pull the ball heads of connecting rod
1
off the ball pin at the cutting and control units
and remove connecting rod
1
.
●
Loosen screws
2
and retaining spring
3
together with the cover disk.
●
Loosen screws
4
and
5
.
●
Twist or shift control cam
6
in accordance with
requirement 1
or
requirement 2
as
required.
●
Tighten screws
4
firmly.
●
Push fixing collar
7
onto control cam
6
.
●
Tighten screws
5
firmly.
Connecting rod
1
and retaining spring
3
stay dismantled for further
adjustments.
3
2
1
8
6
4 6
4
5
5
7
Fig. 2 - 01
2 - 2