Rocker And Throat Plate; General Information; Position Of The Rocker - DURKOPP ADLER 806 Service Instructions Manual

2.2

Rocker and throat plate

2.2.1

General information

2.2.2

Position of the rocker

While the needle bar and the throat plate are performing a complete
oscillation movement during the zigzag function, the needle bar will
move 2 times up and down.. This is ensured by the couple of gears 1
and 2, having a transmission ratio of 1 : 2..
Caution: Danger of bodily injuries !
The machine must be in the position "Safe motor stop ".
Rule and control
The needle should stitch into the centre of the 2 mm bore-hole of the
gauge 3 (part no. 0804 400270) when the machine is out of the zigzag
mode.
Correction in X direction
–
Lower the sewing machine by the function "Lifting/lowering the
sewing machine".
–
Press the key "O".
"Safe motor stop " will be switched on.
–
Loosen the screws 4 on the two setting blocks 5.
–
Loosen the clamping screw 7 on the drive level 6.
–
Loosen the screws 8 and 12 on the bearing for the thread take-up
lever guide 5.
–
Loosen the clamping screws 17 and 18 on the arm shaft crank 19.
–
Loosen slightly the position screw 16 on the arm shaft crank.
–
Proceed to a correction.
If required, shift the sewing foot stroke shaft 10 in the axial
direction after having loosened following screws:
The screws on the two setting rings 11 and 13, the screw 14 on the
block 15.
–
Retighten all the previously loosened screw and note the following:
Axial fixing of the rocker,
horizontal position of the setting block 5 ,
correct position of the wicks,
minimum possible play of the thread take-up lever guide 9.
Correction in Y direction
–
Lower the sewing head by the function "Lifting/lowering the
sewing head ".
–
Press the key "O".
"Safe motor stop " will be switched on.
–
Loosen the clamping screw 7 on the drive lever 6.
–
Change the rocker position accordingly.
–
Retighten the clamping screw.
Note
Following a correction in X-direction, check and, if required, correct
the distance between the hook and the needle.
9