Synchronous Operation Of Bottom Feed And Puller - Dürkopp Adler 52 i Series Service Instructions Manual

10.1 Synchronous operation of bottom feed and puller

Proper setting
The bottom feed and the upper puller should operate synchronously. The
upper puller motion must be unconditionally finished before the feed dog
moves.
 The sewn material remains under tension between the presser foot
Pic. 40: Synchronous operation
(1) - Eccentric
1. Remove the arm cover ( p. 13).
2. Loosen 2 fastening screws (2) on the eccentric (1).
 The eccentric (1) should turn on the shaft with little force.
3. Turn the hand wheel in the turning direction so that the needle is in
 The feed dog will come up over the throat plate.
4. Put a sheet of paper under the presser foot and turn in the turning
5. At that moment put the eccentric (1) back and set it according to the
 The synchronization moment then comes up – the feeding wheel will
6. Tighten two screws (2) of the eccentric (1).
7. Fit the arm cover again ( p. 13).
52
and the puller, thus minimizing the seam ripples at the stitch tighten-
ing.
②
①
front of the upper dead point.
direction until the machine starts feeding it.
picture.
feed synchronously with the feed dog.
①
(2) - Screws
Service Instructions 52Xi, 52Xi-75 - 00.0 - 11/2021
Puller
②