Pfaff 3334 User Manual

Adjust so that the brake block is pressed against the driving pulley when
the latter has only half a revolution to go before the machine stops. When
it has stopped, check whether the brake lever can be pulled away from the
pulley by obout V44", or 2.0 mm. To adjust, loosen brake block set screws
a (Fig. 37) and the lock nut on stop screw b and turn the latter in or out, as
appropriate.
1 = Lifting lever
2 = Knife bar tripping lever
3 = Bearing bracket
4 = Bracket
5 = Boll joint connection
6 = Locking lever
7 = Catch
8 = Lifting lever stop
Fig. 41 Adjusting the locking lever
(4) Stop Tripping Segments
Adjust the stop tripping segments on the rim of the feed cam so that the
tripping dog at the front end of the tripping lever will hit the rim of the
feed cam right behind the stop tripping segment when the machine is start
ed (Fig. 40).
(5) Locking Lever
The locking lever serves to lock the lifting lever in position and prevent the
work clomp from being raised inadvertently before the stitching cycle is
completed. In addition, it prevents starting of the machine before the work
clamp has been lowered onto the goods. To adjust, loosen screw d (Fig. 41)
and move the catchat its top end to the rightor left, as maybe required.
(6) Belt Shifter
After you have loosened the set screws, adjust the belt shifter so that the
belt runs in the groove of the driving pulley (without chafing against the
belt shifter) when the machine is started, and is securely shifted to the idler
pulley when the machine is about to stop (Fig. 11).
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From the library of: Superior Sewing Machine & Supply LLC

Pfaff 3334 Specifications

General

Brand	Pfaff
Model	3334
Category	Sewing Machine
Language	English