Pfaff 481, 483 service manual Eccentric hook shaft bearing and hook-to-needle clearance

9 Eccentric hook shaft bearing and hook-to-needle clearance

Requirement

1.The notch in bearing 3 (see arrow) must be visible from below.

There must be a slight but still noticeable play between gears 5 and 7.

2.With the hook set lightly against spin disc 4 and the hook point opposite the center line of the needle, there must be clearance of less than 0.1 mm between the hook point and the clearance cut of the needle.

3.Gear 5 must be flush with gear 7.

1

0,1 mm

4

2

7

3

65

●Loosen screws 1 and 2.

●Turn bearing 3 according to requirement 1.

●Set the hook lightly against spin disc 4, shift bearing 3 - without turning it - according to requirement 2 and tighten screws 1 and 2.

●Position gear 5 (screws 6) according to requirement 3.

14 PFAFF