Strobel 3100D-R, Mechanic'S Instructions

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MA_310D-R_3100D-R_A16-3_181015_en
3.6
The side plunger presses the upright inserted sewing material (fabric hem or
lining) from the left into the stitch plate opening so that the needle can pierce
the sewing material at the left penetration.
Side plunger
3.6.1 Adjusting the side plunger (Fig. 2)
A t t e n t i o n !
Disconnect machine from the mains!
The upper dead point of the cam (4) for the side plunger (8) responds when the
needle point (left needle lever position) is 7 – 8 mm before the centre of the
side plunger. It opens by 4.5 mm, measured to the vertical fabric support
surface of the stitch plate.
When the strap (6) for the side plunger (8) is in contact with the stitch plate and
the upper dead point of the cam (4) for the side plunger (8) responds, then the
crankshaft (7) has moved by 0.05 +0.05 measured over the thread M5.
For sensitive sewing material, we recommend a rounded side-plunger.
You will find Optional extras under point 8 of the operating instructions.
3.6.2
The cams (3) (
Cams (Fig. 2 and Fig. 3)
Fig. 2) and (4) (Fig. 2) are drilled, that means that every first grub
screw in rotary direction has a point.
With cam (5) (Fig. 2) the gear (1) (Fig. 3) at the back of the head is drilled.
3.6.3
The venting of the needle thread tension must respond when the feed dog or
the presser plate is vented approx. 4 mm by activating the knee lever.
Adjusting the thread tension venting