Machine Head; Crank Pin On The Arm Shaft - Duerkopp Adler 745-26 Service Instructions Manual

15. Machine Head

15.1 Crank Pin on the Arm Shaft

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The clearance of the eccentric crank pin 1 to the arm shaft 4
determines the size of the needle bar stroke and thus the upper dead
center of the commonly and separately switchable needle bars.
ATTENTION !
The crank pin 1 is precisely set at the factory!
After a replacing of the thread lever or when the needles no longer
switch off correctly, then the crank pin 1 is to be reset.
3
4
The setting of the crank pin 1 occurs with the gauge 13 (Order no.
0246 002591). The crank and the arm shaft need not be removed for
the setting.
Caution Risk of Injury !
Turn the main switch off.
Set the crank pin only with the main switch turned off.
–
Turn the main switch off.
–
Loosen screws 7 and 9.
–
Remove cylinder 11 with swing lever 12.
–
Remove the head cover 10 after loosening the mounting screws.
–
Remove the needle bar link (see Chapter 15.2.4).
–
Loosen the needle tie rod from crank pin 1 after screwing out its
mounting screw (Attention: Left-hand thread!) and pull off with the
needle cage.
–
Turn the handwheel until the Allan screws 2 show downward.
The Allan screws 2 are accessible in this position.
–
Loosen Allan screws 2.
5
6