Search the Community

As we are going into details of my Pfaff mentioned in the previous post (link below) I created a new topic dedicated especially to this machine. So the bottom of the machine also has been cleaned up. Here are some photos including the looper Uwe asked for. The previous user forced the machine to work with 190 system needles, so knowing from the manual that this machnie is using 134 system needles I had to lower the needle bar to make the eye of the needle in the looper's range and also correct a looper timing. The looper has a flat sided shaft so losening the allen screws marked with green arrows allows to move the loper only left or right (closer or further to the needle scarf). Having no idea how to change the rotation of the looper I decided to loose both screws on the bottom gear marked with green arrows. Turning the lower gear turns the upper gear opposite and the looper as well. Turning the gear on its shaft also allowed to make no changes in the feed dog eccentric position. I am not sure if I did it properly - but have no service manual and no easier idea how to do this. The looper catches the thread properly and now I have to figure out the thread tension issue - explain later. I have a problem recognizing the unknown function of the brass foot I found on the right bottom of the machine (orange arrow). This is a block of brass fixed on the end of the vertical pushing rod. This rod can be pushed up and down. I can block this mechanism by changing the silver lever (blue arrow) position. Up position of this lever allows pushing the rod up or down and down position of this lever disangage (blocks) this function. The rod on its upper side is connected by the system of four arms with the kind of slider fixed to the lower horizontal shaft of the machine. Pushing this rod up changes the needle and presser bar position but only in their extreme forward or backward position. When both needle bar and presser bar are in their extreme forward position pushing the rod moves both bars 3-4 mm further to forward. The same situation is in extreme backward position of those bars; pushing the rod moves both them 3-4mm further to backward. I pressumed it would be a kind of 'afterburner' of the stitch lenght - but there is no possibility to pass the whole cycle of sewing while needle bar and presser bar are hitting one another and stucking in mid-position when the rod is pushed up. Does anybody have an idea of what this rod might be for? Bert