Adjusting The Looping Stroke Position - Dürkopp Adler D869 e-con Service Instructions Manual

8.2
Fig. 42: Adjusting the looping stroke position
(1) - Vertical center line of the needle
(2) - Hook tip
The looping stroke is the path length from the lower dead center of
the needle bar up to the position where the hook tip (2) is exactly on
the vertical center line of the groove for the needle (1).
The looping stroke is precisely 2 mm.
Order
First, check the following settings:
Proper setting
Machine is locked in place at the looping stroke position (202°) ( p. 34).
The hook tip (2) points exactly to the vertical center line of the needle (1).
To adjust the looping stroke position:
1. Remove the lock.
2. Execute the service routine Needle-Hook > Timing ( p. 14).
 The software is used to define the necessary presettings on the
56

Adjusting the looping stroke position

①
②
• Needle bar linkage is aligned correctly ( p. 52)
• A straight and undamaged needle has been inserted ( Operating
Instructions)
machine.
Position of the hook and needle
(3) - Threaded pins
Service Instructions D869 e-con - 00.0 - 09/2023
③