Position Of The Lower Toothed Belt Wheel - Duerkopp Adler 868 Service Instructions Manual

2.2.2

Position of the lower toothed belt wheel

5 4
10
3 2 1
Caution: Risk of injury !
Turn the main switch off !
Check and set the position of the lower toothed belt wheel
only with the sewing machine switched off.
Standard checking
The screws in the toothed belt wheel 2 have to sit on the flat spot 1 of
the lower shaft 5.
The toothed belt wheel must be positioned in a way that the toothed
belt 4 bears against the belt tensioner ring 3 but without being
dislocated.
–
Check the position of the toothed belt wheel.
Correction
Pull out the toothed belt from the lower toothed belt wheel 2.
–
Loosen the threaded pin in the toothed belt wheel 2.
–
Turn the toothed belt wheel 2, until the screws sit on the flat spot of
–
the lower shaft 5.
Tighten the threaded pin in the toothed belt wheel 2.
–
Put the toothed belt on the toothed belt wheel 2 again.
–
–
Check the course of the toothed belt.
ATTENTION Danger of breakage !
After replacing the toothed belt, check the following:
Hook adjustment (see chapter 2.6), feeding motion of the
feed dog (see chapter 2.5.2) and lifting motion of the feed dog
(see chapter 2.5.3).
1