Pfaff coverlock 4872

30
Setting the lower overedge looper
10. Setting the height of the lower overedge looper
Requirement:
The vertical clearance between the looper point and the looper drive shaft must be 65 mm (fig. 19).
Note:
The looper drive shaft must not have any axial play.
Check:
● Remove the housing as described in the adjustment and repair instructions.
● Turn the handwheel in the normal direction until the looper point is at its right point of reversal.
● Mount the adjustment gauge.
● Check the height of the lower overedge looper (measurement E).
Setting:
● Turn the handwheel in the normal direction until the looper point is at its right point of reversal.
● Loosen the screw 1 on the overedge looper.
● Mount the adjustment gauge.
● Move the looper until it has a vertical clearance of 65 mm to the looper drive shaft.
● Remove the adjustment gauge.
● Tighten the screw 1 of the overedge looper.
Test:
● As described under “Requirement”.