Adjusting The Stroke Movement Of The Feed Dog - DURKOPP ADLER 171 Service Instructions Manual

7.2 Adjusting the stroke movement of the feed dog

Fig. 18: Adjusting the stroke movement of the feed dog
(1) - Pusher eccentric
(2) - Edge of the housing
Proper setting
When the needle tip reaches the needle hole, the descending tooth point
of the feed dog is level with the surface of the throat plate. This position
corresponds to slot D ( p. 13).
To adjust the stroke movement of the feed dog:
1. Loosen the screws of the stroke eccentric (3).
2. Lock the machine in place in slot D ( p. 13).
3. Turn the stroke eccentric (3) such that the middle of the 1
4. Align the gear wheel.
 When at its highest position, the feed dog is 0.8 mm above the sur-
5. Tighten the screws of the stroke eccentric (3).
Information
Exception for class 171-131110:
Left-hand machine: Slot F ( p. 13)
Set the 2
with the 2
Right-hand machine: Slot D ( p. 13)
Set the 2
with the 1
30
④
in the direction of rotation is level with the edge of the housing (2).
face of the throat plate.
nd
screw in the direction of rotation of the stroke eccentric (3) level
nd
screw in the direction of rotation of the pusher eccentric (1).
nd
screw in the direction of rotation of the stroke eccentric (3) level
st
screw in the direction of rotation of the pusher eccentric (1).
③ ②
(3) - Stroke eccentric
(4) - Screw
Service Instructions 171/173 - 00.0 - 01/2020
Feed dog
①
st
screw (4)