Distance Between The Hook And The Needle - DURKOPP ADLER 806 Service Instructions Manual

2.4.4

Distance between the hook and the needle

0,1
R
18
Caution: Danger of bodily injuries !
The machine must be in the position "Safe motor stop ".
The distance between the hook and the needle must be checked after
inserting a needle that belongs to a different size group
(80-110 Nm or 120-140 Nm).
Rule and control
In the loop formation position, the distance between the hook and the
furrow of the needle must amount to 0.1 mm when the machine is out
of the zigzag mode.
–
Lower the machine head by the function "Lifting/lowering the
machine head".
–
Press the key "O".
"Safe motor stop " will be switched on.
–
Remove the stitch throat.
–
Check the distance. The needle must not osculare needle guard 5.
Correction
–
Move the machine in the loop formation position by turning the
handwheel.
–
Loosen the screws 1 and 3.
–
Loosen the screws 7
–
Remove the stitch throat.
–
Loosen screws of bobbin case retainer 6 and take bobbin case
retainer.
–
Non loosen accessible screws (SW 1,5) of the hook guard 4 to be
laterally displaced.
ATTENTION !
Do not loosen screws securing the vertical position.
–
Displace hook guard 4 in the direction of R.
–
Displace the hook case 2 sideways until the distance between the
furrow of the needle and the hook tip amounts to 0.1 mm.
–
Retighten the screws 1 and 3.
–
Displace the hook guard backwardly until the conical tip of the
4
needle contacts the hook guard, without deflecting the needle.
ATTENTION !
The hook guard 4 sheet should not touch the hook.
–
Tighten scrwes (SW 1,5) of the hook guard.
–
Reassemble bobin case retainer and throat plate.
1
2
3