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Hello Leather Crafters. this may be long-winded.. I cant seem to find topics to answer my questions on the presser foot lift and the Knife removal NOTE: sorry -i did not realize the names of the photos would not show up with the photo a few weeks ago I posted about my needle bar issue. I received the new needle bar rocker and have the machine put back together and I have more questions. My machine was used for binding pics attached for the binding setup (binder 1,2,3) does anyone want to buy this? binder So lets start with image 12 and image 11 : On image 11 you can see a double set of arms. the tall T arm in the back seems have been(previously) connected to a solenoid to release pressure on the thread tensioner.. NO matter if this is pulled from the skinny cable going down through the base or the manual foot lift is used, there is nothing to push the pin in and release the pressure on the front tensioner. Image 10 shows the pin and metal slider, The slider does not really even touch the pin when the manula foot lift or the T-arm is moved.. maybe something is missing On image 12, the long arm (outside arm)pivots on the center (pivot point) and has an adjustable arm(black skinny shaft) that lifts up on the tension release mechanism but does nothing to lift the presser foot. in image 11 you can see the black metal bracket that was bolted to the (Long foot lifter arm) and had a solenoid attached to the back of the machine(covering the round hole so when the solenoid was activated, it pushed down the arm to lift the foot...I think.. but there is nothing on the presser foot side that would lift the linkage for the presser foot image 9 shows the solenoid that was inside the head (round hole area) under the arm of the machine is the solenoid that was on the back cover over the round hole.. The body of the solenoid was attached to the cover plate and when activated would push down to activate the long arm and I believe there should have been something else connected to lift the presser foot up ================================= second set of pics are the Knife assembly at the Rotary hook area and under the base (Black brackets inside in pics (0,1,2,6,7,8) has anyone removed the knife assembly from a machine? how do you do it.. ========================================= lastly:
So, after owning my '76 Pfaff 335 H3 for a couple of years (very light use) the former owners oiling job is finally starting to wear of and I might have to start oiling it again. The guy I bought it from was an 80-ish year old sewing machine repairman turned textile manufacturer that was closing up shop and getting rid of all his machines. He slathered the whole machine in this deep yellow sticky oil, that it to this day leaks of after standing a while (I have to keep a piece of cloth under the presser foot to soak up the oil in between uses). So, now I'm researching what oil I need, and this is turning into quite the rabbit hole This here thread seems to recommend a ISO VG 15 oil https://sewing.patternreview.com/SewingDiscussions/topic/103874 which to me seem a bit thin (I'm a mechanical engineer so ISO VG oils are quite familiar). In the same thread they link to this oil http://www.gulfstarlubricants.com/sewing-machine-oil/ which is even thinner (ISO VG 10). The consensus on here on the other hand seems to be for ISO VG 22, which Mobile also sells https://www.mobil.com/english-cn/industrial/pds/apxxmobil-velocite-sm-series Pfaff's manuals aren't that helpful, as they only recommend Pfaff sewing machine oil No. 280-1-120 122, which I've not managed to find out what it is. The newer manuals for the 335 spec "Only use oil with a viscosity of 22.0 mm^2/s at 40 C and a density of 0,865 g/cm^2. Pfaff recommends Pfaff sewing machine oil, part no. 280-1-120 144", which to me sounds like ISO VG 22 if I remember the specs for ISO VG oils correctly. Personally, I'd have use for a ISO VG 22 oil elsewhere in the shop, but I thought I'd get your guys opinion on the matter first. On a side note, my mother is threatening to outsource the oiling of her home Bernina machine and Bernina Serger machine to me, any recommendations of oil for those as well?