Needle Bar Height, Play Of Needle To Hook Tip, Loop Stroke - Dürkopp Adler 838 Service Instructions Manual

4.2

Needle bar height, play of needle to hook tip, loop stroke

5
26
Rule:
When the handwheel pointer indicates "205" degrees (2.5 mm loop
stroke), the hook tip should stand at the needle axis at the stitch length
0. Length (A) = 1.5 mm, clearance gap (B) = 0.02 to 0.1 mm.
3
–
Turn the handwheel so that the pointer indicates "205".
–
Loosen screws (1). Turn the hook tip (2) on the needle axis.
–
Loosen screw (3). Position the needle bar with the needle to the
dimension (A). Tighten screw (3).
–
Loosen two screws (4) and screw (5). Move the hook column (6)
from the needle.
–
Tighten screws (4) gently. With the help of screw (7), move the
hook column (6) to the clearance distance (B). Tighten screws (4)
and (5).
–
Verify that the hook tip (2) is in the area of the needle axis.
Tighten screws (1).
1
6
4
2
7
4
B