Catcher Actuating Lever - Pfaff 900/56 Service Manual

10

Catcher actuating lever

Requirement
With the trimming mechanism at rest, ball-joint connecting link 2 must be at right angles to
the edge of the bedplate. Also, there must be a clearance of 9 mm between the left edge
of ball-joint connecting link 2 and the centre of catcher driving shaft 7.
When difficult threads are processed and the catcher does not take up the bobbin
thread reliably, the stroke of the catcher can be increased or decreased through the
elongated hole in crank 3.
Loosen nut 1.
Set ball-joint connecting link 2 in centre of elongated hole in crank 3.
Tighten nut 1.
Making sure trimming mechanism is at rest and screws 4 are still loose, loosen screws 5.
Adjust catcher actuating lever 6 both axially and radially according to the requirement.
In this position, tighten screws 4.
Check this adjustment according to the requirement.
Screws 5 are left loose for adjustment of thread catcher.
6 4
5
7
1
Adjustment
2
3
17