Thread Take Up Spring - DURKOPP ADLER M-Type 869 Service Instructions Manual

2.12.2

Thread take up spring

2
1
Caution: Danger of injury!
Turn off the main switch.
Only check and adjust the thread take up spring when the machine is
switched off.
Standard checking
The adjustment rules for spring travel and spring tension apply to
normal needle thread thicknesses.
With extremely strong or weak needle threads or sewing material
other settings may be required.
Spring travel
The thread take up spring 1 must keep the needle thread at low
tension from the top thread level position until the eye of the needle
pierces the material.
To achieve an even seam at low thread tension the thread take up
spring travel can also be increased.
The thread take up spring must only be at the stop when the needle
has penetrated the material up to the eye.
Spring tension
The spring tension should be lower than the needle thread tension.
Correction
Spring travel
–
Undo screw 2.
–
Turn the stop sleeve 4.
Turn anti-clockwise = more travel
Turn clockwise = less travel.
–
Tighten screw 2.
Spring tension
–
Undo screw 2.
–
Adjust spring washer 3 without changing the position of the stop
sleeve 4.
Turn the washer clockwise = less spring tension
Turn the washer anti-clockwise = more spring tension.
–
Screw in screw 2 without turning the position of the stop sleeve 4
and the spring washer 3.
3
4
35
GB