Strobel VEB 200-1, Mechanic'S Instructions

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MA_VEB200-1-2_A2_181015_en
3.16
The seam lock is made at the seam end by lifting the feed dog.
Seam lock (Fig. 19)
Therefore the feed dog is lifted, the plunger is lowered and a second thread
tension is activated.
Fig. 19
3.16.1
The feed dog height is set by means of pneumatic cylinder (1) through lever (2)
and eccentric bush (3). The feed movement remains the same as before but
the feed dog does not catch the material.
Setting the feed dog at the seam lock
The setting should be very smooth. Aluminium plate (4) is only fixed with one
screw and can be slightly displaced, therefore please make sure that none of
the moving parts touches the plate or jams.
Tense spring (5) at lever (2) by means of screw (6) in a way that during the
normal sewing operation the feed dog cannot be pressed upwards (through the
pressure of the feed plates). In this case the machine would rattle during
sewing.