| tabbypurr@gmail.com: Jul 18 04:58AM -0700 On Tuesday, 18 July 2017 10:27:25 UTC+1, Mike Coon wrote: > free it up. Success with sticking the whole machine in front of a > domestic fan heater until it was nicely warmed up! > Mike. I like that. Once I've got them oiled I can try the oven at 40C - I think it goes that low. Cheers. I do now suspect both of them are suffering the same seizure problem, just of different bits of the mechanism. I know almost nothing of their history post-purchase, but the 530-2 with the stuck selector does have a repair tag from 1977 saying stuck stitch selector. NT |
| "pfjw@aol.com" <pfjw@aol.com>: Jul 18 05:45AM -0700 Most common (as in many made) machines have service manuals on-line. But there are two (2) keys to sewing machines that 99-44/100% of their owners (especially guys) do not understand: a) Lubrication: Sewing machines used to be sold with a can of oil for a reason. To prevent wear - especially on critical cams and cam-followers - they must be checked and lubricated about every 30-40 hours of use *at least*. Oils are better today and if one uses a high-tack PTFE-impregnated oil, that time may be extended to perhaps 60 hours. OR, every 60 days if not used often, or before each use if stored for long periods. WALK the machine through its movements by hand first before applying power. b) Cleaning: Lots of flakes and fluff is generated by sewing - so a can of dust-off is your best friend - again, something not available back in the day. If you have worn down a cam or cam-follower, short of replacement you will have problems. On thread-tensioners, there is often (or was at one point) a felt washer to maintain a gentle pressure on the thread that has some give to it. Look to see if that washer is missing. https://www.google.com/search?q=Bernina+121+exploded+diagram&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwjksMLT7ZLVAhXBJiYKHULLABEQsAQIJw&biw=1366&bih=662 Is a source for an exploded diagram for your earlier machine. Do a search on the second - model number followed by "Exploded Diagram", and you will get the next one as well. I do the maintenance for my wife's machine. It 'purrs like a kitten', despite its advanced age. Best of luck with it! Peter Wieck Melrose Park, PA |
| tabbypurr@gmail.com: Jul 18 09:21AM -0700 > Best of luck with it! > Peter Wieck > Melrose Park, PA I've had the chance to clean & oil them. The 530-2 now sews, but 3 adjusters are still jammed, and the whole mechanism is much stiffer than it ought to be, though not as bad as it was. The 121 I'll try a new needle with. I didn't think of that. A look at the mechanism reveals there is no upper thread tension release mechanism, it's just fixed tension. So I'm a bit puzzled why a washer needed removing to get that to work, or why the washer was there in the first place. I am only a bit wiser there. I didn't think of exploding them. I googled but no such diagrams for either machine found. I've been contemplating putting ammonia into the seized bits to cut through the oxidised/polymerised oil, not sure if that would be a good idea or not. The seized mechanicals are all steel. NT |
| Jeff Liebermann <jeffl@cruzio.com>: Jul 18 09:35AM -0700 >fairly straightforward. I've set the bobbin & top tensions. I >suspect the top tension release mechanism is stuck. I'll take >another look but didn't say any ready access to that area of internals. The Bernina 121 similar to the 125, which adds zig-zag but is the same as far as thread tensioning. It was also sold as a Husqvarna Zig-Zag. This should be useful: <https://www.occaphot-ch.com/bernina-oldie-modelle/bernina-modelle-kl-125-121-1950er/> I don't know exactly what's wrong, but you have the right idea. Take it apart, clean everything, reassemble, lubricate, and adjust the tension. I don't see how you can successfully adjust the top thread tension, and then claim that it doesn't grip the thread at all. If you've removed washers, you probably took it apart and cleaned it, so I'll assume the center shaft was clean. I normally do not oil the tension disks, so if they've been oiled, that might be the problem. If the machine has been infrequently used, is dirty or dusty, or was lubricated with 3-in-1 oil, you might consider cleaning with solvent and some new oil. Incidentally, that may not be a "valuable" machine, but it might be quite useful. Such all-metal machines are prized for sewing leather and heavy canvas. >Another lever also wouldn't move but a bit of persistence & >persuasion got it to. I suspect all round oiling may be the solution, >will know later. The stuck stitch selector knob is an important clue that the machine needs cleaning and lubrication. Take the belt off and try to turn it by hand, but don't force it. If it's stiff, then you get to clean out the gum with some solvent and lubricate from scratch. If it moves freely, look at the motor. If you see blobs of oily lint, sticky goo, or rust on the shafts around the moving parts, there's the problem. Too much oil is just as bad as not enough. Same with using the wrong type of oil. You want oil that doesn't evaporate and maintains a fairly constant viscosity over temperature. <http://www.makeit-loveit.com/2012/09/how-to-cleanoil-your-sewing-machine.html> I would go easy on "oil the whole thing" and try to isolate the cause of the drag. Adding more oil to a dirty or dusty machine just creates more sticky goo. >I've gotten tired of googling only to find idiot advice like 'have >you put the thread in the right end,' 'don't forget to set the >bobbin tension' and 'ooh you need to take it to a dealer' type stuff. If you specific advice for your specific problem, it's really helpful if you would supply specifics. A photo of the guts is very useful as many problems can be visually seen. Some history of the machine is always helpful. I'll spare you the rest of the lecture. I'm out of time. Good luck. -- Jeff Liebermann jeffl@cruzio.com 150 Felker St #D http://www.LearnByDestroying.com Santa Cruz CA 95060 http://802.11junk.com Skype: JeffLiebermann AE6KS 831-336-2558 |
| Twai <caedfaa9ed1216d60ef78a6f660f5f85_11412@example.com>: Jul 18 11:44AM replying to Dan, Twai wrote: My lg lw2510window AC compressor don't shut off. -- for full context, visit https://www.homeownershub.com/maintenance/adjustiing-mod-ing-digital-thermostat-on-lg-window-air-condi-116541-.htm |
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