Hook Lifting - Dürkopp Adler 52 i Series Service Instructions Manual

7.3 Hook lifting

Proper setting
In the direction of the hook axis there should be the space (A) = 0,8 mm
between the bobbin case lifter and the hook. The maximum hook lifting
should be (B) = 0,4 to 0,8 mm according to the thread thickness. The tim-
ing of the lifting eccentric should enable a smooth passage of the thread
between the bobbin case and the bobbin case lifter (C) = 1 mm.
Pic. 31: Hook lifting
(1) - Screw
(2) - Case
(3) - Screw
1. Dismount the throat plate ( p. 15).
2. Tilt the machine ( p. 12).
3. Loosen the screw (4) and shift the case (2) to obtain the space (A) =
4. Turn the hand wheel until the bobbin case lifter (5) is in the maximum
42
① ②
B
0,8 mm and tighten the screw (4).
lifting position (left position). Loosen the screw (3) and turn the bobbin
case lifter so that the space (B) = 0,4 to 0,8 mm is achieved according
to the thread thickness.
Needle bar and hook
⑤
④
③
(4) - Screw
(5) - Bobbin case lifter
Service Instructions 52Xi, 52Xi-75 - 00.0 - 11/2021
C