Pfaff 260 Service Manual page 55

If they are positioned as shown in Fig. 89-1, loosen the two feed dog set screws
and adjust.
Fig. 88 Setting the needle bar of
correct height
If the feed rows are centered improperly and
chafe against one side of the feed slots
(Fig. 89-3), correct this condition as follows:
On Pfaff 260 machines, loosen the set screws
on the feed rock shaft centers, and top against
the shaft with the screwdriver handle until
the feed dog is correctly centered in the feed
slots. Before you tighten the set screws again,
check to make sure that the Aot spots on the
centers face toward the set screws and that
the feed rock shaft has sufficient end ploy to
ensure proper lubrication.
If the feed rock shaft has been moved too
much in the process, adjust the position of its
rear crank to bring it in line with the feed
forked connection and eliminate binding as
well as excessive noise.
To remedy this condition on Pfaff 360 machines, the feed bar rather than the
entire feed rock shaft has to be adjusted. To do this, remove the needle plote,
loosen jam nuts 1 (Fig. 90) and turn the two center screws 2 to adjust the lateral
position of the feed dog, as appro-
priate. When you retighten the jam
nuts after the adjustment, take care
that the center screws do not turn
likewise which may result in jam-
ming the feed bar. To avoid this,
hold the center screws in the correct
position while you tighten the jam
nuts. Make sure the feed bar has
sufficient play between the centers
to ensure proper lubrication.
Lengthwise Adjustment
=
1
3
2
Fig. 89 Adjusting the feed dog in the feed slots
Set the machine for the longest forward stitch. Loosen the binding screw on
the feed rock shaft crank, and turn the crank on the shaft so that the central
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