Thank you so much for this thorough video. My partner and I managed to get the 730 they bought working again thanks to you! I do have a couple additional tips that might be helpful to others: - Our replacement gear was slightly longer, so the cam stack was offset by maybe 0.5mm. A helpful technician of a local repair shop told us we can adjust for this by moving the cam follower (the lever where you select the pattern) a bit by loosening the two screws holding the lever ratchet. - Adjusting the parabola is a bit trickier than shown, as in our case the set screws where not accessible when relevant position (needle at the upmost point or at the point without lateral movement). I thus made an second mark on the case to be able to rotate the hand wheel the right amount. - You be careful not to rotate the wheel backwards while the worm gear is loose, otherwise it will "unscrew" it, moving it along it's axis. - I didn't entirely understand how you synchronized the pattern display and again had the issue with the set screws in inaccessible locations. What worked for me was moving the needle/hand wheel until it's at the beginning of the pattern and then assemble the pattern display. Then there's no need to adjust the gears, it "just works". - A 2mm hex key (inbus) works fine as a tool to hold the pattern display in the right orientation. No need for any special tools.
Thank you for this video. I just purchased this machine very cheap and discovered the problem is the cam shaft gear. Took it to the shop and I helped him find out the problem. I will ask my husband to watch this video with me several times and see if we can fix it ourselves. I didn’t even need the machine, but I couldn’t help myself paying $25 for it!!
I just picked up a used 730 record at an estate sale. I am not a real sewing person. I am an old man. I like mechanical things. Sure enough, the gear is only half there.I am going to try changing it so I will watch this video a few times. It is so beautiful inside and I am going to have lots of fun cleaning, inspecting, repairing and lubing it. and then watching it perform.
Dear Mr. Iund, thank you very much for this tutorial! My Bernina 707 had a broken cam gear. With your instructive and precice video I was able to understand, repair and adjust the machine successfully. I am so happy! Thank you for sharing your expertise and knowledge on vintage Bernina sewing machines. Compliments also to Mrs. and Mr. Watson for their thoughtful recording. It was a great pleasure to watch this video. All the best for you and your coworkers from Freising, Gemany Udo
Neal Thank you so much. I used your video to change the cam stack gear on my 707. Most importantly I was able to reset the worm gear using your video. A number of other youtube videos had how to change the cam stack gear but no mention of the worm gear and the problem of up-side down parabola. Sure enough had the problem. I did need to rotate the shaft more than 360. In fact a number of turns. Kept trying until i got it right. Then tested by sewing. AGAIN!!! Thank you so much for the time you take to set up and record your very clear instructions. MM.
Mr. Iund - just a quick thank you for EVERYTHING. You presented it all so well. I was able to replace my cam stack gear in my 830, and fix the parabolic timing thanks to you. You are a huge blessing, as no one would repair this antique beauty. It would have been a sin to trash or part out this machine. Thank you so much for taking the time to make this.
Thank you so much for this video. I recently purchased a 730 Record online and knew based on your videos that we would be able to bring her back to life. And sure enough, it was a repair we could make ourselves and the machine is now running beautifully. Thank you again!
Your videos are beyond education! Thanks a lot! I fixed my broken Bernina 830 based on your videos (also the timing was very helpful). One thing that I noticed is that if the selector level finger does not sit properly on the patterns it will jump and make a noise. This may happen due to different dimensions of the new part and the selector finger may tough the neighor patterns causing wear, jump and noise. So I think the lever position ladder had to be also adjusted for the first and the last patterns so that it fit properly on the patterns.
What a super video, Neal. I have this precise problem with one of our machines, and while I could have fumbled through some of the more basics aspects of the repair, I'd have come unstuck at several points along the way without your guidance. I'm ordering the part tonight and will post my - hopefully successful - outcome once the job's complete. Articulate and beautifully presented. Thank you!
Thank you so much! We are glad the video was helpful. Unfortunately, Neal passed away last year after a long fight with his health. But please feel free to tell us of your outcome!
@@nwatson2595 Oh dear this is the first video I have watched of Neal and was so impressed with his knowledge and how he presents this repair. One of a kind. My condolences to you and his family and friends, I can believe this good man will be sorely missed by many. I am saddened myself
Excellent video Neal. I trained as an Industrial Sewing Machine Mechanic in 1972 in Ireland and worked both in Ireland and Canada for many years. I'm retired now and still doing service and selling a few better quality machines. Just picked up a 730 and fortunately the gears are good. My theory on why these gears break, is expansion and contraction of the metal. When the core shrinks, it breaks the bond with the plastic/nylon gear, and you get a bit of "Play" which eventually breaks the plastic. There isn't much torque on these gears so they should last. Any Play in gears is eventually going to cause problems. Manufacturers started using plastic as people demanded lighter and quieter machines, and of course cheaper machines. A few manufactures have gone back to bronze or brass. To build a machine of this quality today would cost over $3,000. As sewing machines are precision and need to be built with good quality materials, you have 50 year old machines like this 730 still being used today. My one worry when repairing older machines is Electrical issues. I have seen exploding capacitors and Foot Controls starting fires. How many people would use 50 year old electrical appliances? I always encourage serious sewing enthusiasts to get old machines that are well built, but take it to a qualified Mechanic to have it checked out. I also advise that people only use Mineral Oil, as other oil leaves residue and you will be left with Varnish. Many machines also use Wicks to lubricate parts and using the wrong oil will eventually mean the wick plugs up and even though you add oil, it doesn't get where its needed. Thanks for the excellent video and good advise.
I agree in part but Acetal (Delrin) has an even greater expansion characteristic than steel. Additionally, Acetal will outgas and entrop (short for entropy) over time, (probably 50 to 75 years) thus you have shrinkage. To avoid the cracking issue, The Swiss factory began stress relieving the plastic billet on the hub with a Branson ultrasonic welding machine. Certain of these parts like the hook crank eccentric, worm gear, and late model vertical gears have not failed to date. That process began in 1972 was only applied to the hook crank, later on the other aforementioned parts. Thanks for the observation.
The problem at the time was pressing an Acetal (Delrin) disk onto a knurled aluminum hub. The problem was tremendous stresses in the disk where the finished machined gear would develop a crack at the weakest side of the gear, always in line with one of the holes and tooth groove. This was solved in 1972 by means of applying a Branson ultrasonic welder to heat up the disk while mounted on the hub, causing a melt around the knurling, thus stress relieving the disk prior to machining. Today I'm seeing cracking of the Acetal gears that is due to outgassing of the plastic and associated shrinking of the part. We call this "entropy"... :-) Finding this kind of thing most commonly on 830, 850, and 900 Nova vertical, camstack, and hook drive gearing.
Dear Sir. Thank you very much for this very informative video. As I recently purchased a Bernina Record 730, I am keen to see as many service techniques and tricks as possible.
Thank you so much. I have a 730 Bernina Record and wanted to get to know it a bit more so I can do some basic maintenance and adjustment. Your video was so helpful and I feel confident to give some simple checks a go with my machine.
Hello, first of all, this is a very educating and thorough video and we all thank you for that. My question is, can I clean bernina from an old oil just by spraying it from top compartment. with some isopropyl alcohol in a can? And after that, just lubricating at the red points. The reason for this is that machine I bought stayed in some place without air circulation and oil attracted and was infused with all those fine prehistoric smells of good old days ))) I have cleaned the bed from an old oil and replaced the mat, then cleaned the motor compartment and motor. Now when the motor runs and heats up - no more smell from that area. But the biggest area of smell is ofcourse in the upper region. This is why I need your advice. Should I remove the bed and just spray it from top with ipa or acetone and lubricate afterwards? Or maybe there are plastic gears somewhere inside that would get ruined in the process. The ones I see, I could maybe avoid from spraying. I don't know how many are there in total. Or is it much safer to do it step by step? Just thinking about that makes me cringe, because I don't have knowledge/tools/service manuals to make adjustments afterwards if something gets installed wrong. Thank You once again for you contribution!
Bloody fantastic Neal. Thank you. You have explained everything beautifully. I managed to get my crappy Chinese repro gear in and the swing timed perfectly thanks to you. Yes it has the slackness but it seems to be impossible to find a good one. If you sell good ones I will order some.
Thank you more than I can say for the time you spend making these videos. They are amazing, easy to follow, and show the close-up areas with great detail. Question: What variation in size of the replacement Cam gear can be tolerated? The gear you show has a profile that is also off center. Is it even possible to find replacements that are NOT off center? You discuss undersized gears. What is the risk if you end up with a gear that measures a bit larger? I guess in summary, how do you know when you receive your order for a replacement gear, how do you know if it's worth putting into your machine? And how much help are digital calipers, even if you have a nice set?
Confidence boosting and very informative, I have a 830, 801 and a 707 (with a split in the cam) and just acquired a 740 favorite which I believe is similar to the 730 so will be using videos regular as a reference . The 740 has a seized satin lever and knob, wouldn't it be great if you did a tutorial on that , sorry I'm just being selfish. Great tips though.
Wonderful video! I have also found that Goo Gone works to dissolve oil lacquer, keeping all those chemicals away from the plastics and rubber. In all my years of "all vintage machine" repair (so not an expert on any), I have seen one 730/740 (I think) with all metal gears. Was there one or am I thinking of a different model? Thank you for keeping these wonderful machines from the knacker. :)
Hello, I would like to express my appreciation (along with many others) of your brilliant videos. I have recently acquired a Bernina Record 530 , I think it has probably not been used for many years but it looks in good condition and works, however the ornamental stitch selector will not move. I wonder if someone could advise me please? I've oiled it carefully according to the instruction booklet.
In case you can see this question- I got a 540-1 favorit recently. No surprise it’s a beautiful machine. Other problems have al been sorted except a broken worn wheel meaning zigzag stitch only without pattern stitches. Now got to know here cheap spare parts are readily available, so intend to fix this. But I’ve chucked out the broken part. Do you have the specs of this worm wheel? Diameter, number of teeth etc. Thanks!
Hi. Enjoying your video on this machine. I have a 530 record it will zig zag but I can’t get the patterns to work. All levers move freely. Would appreciate any help plz
Great video. I have a bernina 730 record that has a broken pin that rides on the cam cluster. Is it possible to source this item. Hate to have this machine nine functional for such a small part
Hi Neal I love your videos! I have bought an 830 Record at a sale b/c I grew up on my mom's and she still has it and the price was irrisistable. I took the cord in to get it replaced at a local Bernina sew & vac. They said they could put a new end on the cord, but not to start the machine b/c the gears may crack. Soooo. I have restored a lot of 1940's singers and vintage knitting machines. Marvel Mystery Oil works wonders on knitting machines. Do you think it would be useful to soak the gears with MMO to prevent cracking? I have found it to be safe for plastics and metal. Or what would you suggest? Thank you.
Sorry to get back to you so late. No..... Acetal is not permeable to oils, solvents etc, so MMO would not help matters any. The problem was solved by Bernina in 1972. The initial problem here was that the Acetal (Delrin) disk had been pressed on a knurled metal hub. The constant expansion stresses coupled with the outgassing of the material, hence (shrinkage), put an early end to the parts. The problem was first noted on the 830 hook crank's feed lift eccentric. A loud click would be noted in these early models...These models had serial numbers of 11and 12xxx xxxx or 1971 and 1972 models. There are still many of these machines in consumers hand who probably had hearing issues.. I dunno... The repair was to apply an engineered energy directing tool called a "horn" on a Branson ultrasonic welding machine against the Acetal components, turn on the for about 3 or 4 seconds, and le voila', the acetal would have instantly melted all around the knurling thus stress relieving the acetal. After this fix, there were no reported issues thereafter. It is a shame that today aftermarket gears are not stress relieved and are subject to cracking... An example is a cracked Bernina 830 vertical gear from PD-Sixty after 2 years in my parts storage. I must say however, that I've found the vertical shaft gears cracking in machines as late as the 830E and 900 Nova machines. This is obviously an outgassing problem due to age. Yup, entropy gets us all in the end...!
I'm located in Australia and was surprised to see that my Bernini 730 has a metal cam stack gear. It is a second hand machine and I do not know if it is original or a replacement.
Hello Neal, I'm wondering if it is worthwhile to replace the motor on a Bernina MiniMatic 707? It belonged to my mother in law, and when she passed my wife took possession of it. Problem is, my granddaughter leaned her laptop computer against the foot control with just enough pressure to cause the motor to activate, but not actually turn.. it sat that way for quite a period of time, causing the motor to overheat to the point it totally destroyed it, burning a hole in the carpet, and almost burning my house down. The machine sewed many articles of clothes when my mother in law had it, and it has some sentimental value. Is it possible to find a used motor, or I'm wondering if the cost of a motor would make it worth repairing the machine.
can you instruct me on how to open all the covers on my bernina 770 QE, I need to clean inside completely cuase a did a lot of sewing with canvas that was treated with something that let a lot of dust all over, please advice, my bernina dealer is too far away and i don't have a car.
@@nealiund7284 Yes but I found getting the shaft out is far more difficult on the 830 because there are things on the way. Gear, cam etc are all the same though.
Hello sir, Can a singer 3314!c singer that doesn't take cams be converted to a singer 3317 that does take cams by changing it to a multi cam mechanism bloke the singer 3317
Lo siento, pero mi espanol is muy pobre! Sin embargo, debe ser un buton en la esquina derecha abajo. Tiene dos controlas, una que anda la position de la aguja, y la parte atras anda los dientes. Al derecho baja los dientes y al izquierda sube los dientes. Cuano los dientes estan abajo, tiene que anda la maquina una vez ante de que los dientes puede subir. (Por favor digame si puede entender!)
hello, i am very sorry to hear that another irreplacable Galactic Pot-Healer is in better place now. Especially that myself i am struggling with correct setting of my bernina 730. unfortunately in Polando i haven't found a one living soul who would have any idea about servicing bernina. had to get manual, setting book, exploded view and even tools catalogues in order to replace camstack and vertical gear. all i need are technical dimensions of servicing tools. I would really be grateful and appreciate if somebody please help me with a tool referencing number N32NU2. This is a needle-like looking tool used for centering oscilating block of a zigzag operation. This place seems like the last spot i could get help. Anyhow i wish You all Happy Every New Year and much healt, wealth and PEACE! Whoop Whoop!
Thank you so much for this thorough video. My partner and I managed to get the 730 they bought working again thanks to you!
I do have a couple additional tips that might be helpful to others:
- Our replacement gear was slightly longer, so the cam stack was offset by maybe 0.5mm. A helpful technician of a local repair shop told us we can adjust for this by moving the cam follower (the lever where you select the pattern) a bit by loosening the two screws holding the lever ratchet.
- Adjusting the parabola is a bit trickier than shown, as in our case the set screws where not accessible when relevant position (needle at the upmost point or at the point without lateral movement). I thus made an second mark on the case to be able to rotate the hand wheel the right amount.
- You be careful not to rotate the wheel backwards while the worm gear is loose, otherwise it will "unscrew" it, moving it along it's axis.
- I didn't entirely understand how you synchronized the pattern display and again had the issue with the set screws in inaccessible locations. What worked for me was moving the needle/hand wheel until it's at the beginning of the pattern and then assemble the pattern display. Then there's no need to adjust the gears, it "just works".
- A 2mm hex key (inbus) works fine as a tool to hold the pattern display in the right orientation. No need for any special tools.
Thank you for this video. I just purchased this machine very cheap and discovered the problem is the cam shaft gear. Took it to the shop and I helped him find out the problem. I will ask my husband to watch this video with me several times and see if we can fix it ourselves. I didn’t even need the machine, but I couldn’t help myself paying $25 for it!!
I just picked up a used 730 record at an estate sale. I am not a real sewing person. I am an old man. I like mechanical things. Sure enough, the gear is only half there.I am going to try changing it so I will watch this video a few times. It is so beautiful inside and I am going to have lots of fun cleaning, inspecting, repairing and lubing it. and then watching it perform.
An old man...Hmm, so am I if I think about it but since I do not, most of the time I'm 30, that is, until I look in the mirror.
Dear Mr. Iund,
thank you very much for this tutorial! My Bernina 707 had a broken cam gear.
With your instructive and precice video I was able to understand, repair and adjust
the machine successfully. I am so happy!
Thank you for sharing your expertise and knowledge on vintage Bernina sewing machines.
Compliments also to Mrs. and Mr. Watson for their thoughtful recording.
It was a great pleasure to watch this video.
All the best for you and your coworkers from Freising, Gemany
Udo
Thank you for your compliments! So happy you got it repaired.
Neal Thank you so much. I used your video to change the cam stack gear on my 707. Most importantly I was able to reset the worm gear using your video.
A number of other youtube videos had how to change the cam stack gear but no mention of the worm gear and the problem of up-side down parabola.
Sure enough had the problem. I did need to rotate the shaft more than 360. In fact a number of turns. Kept trying until i got it right. Then tested by sewing.
AGAIN!!! Thank you so much for the time you take to set up and record your very clear instructions. MM.
Thanks. Lots of misinformation out there.
Mr. Iund - just a quick thank you for EVERYTHING. You presented it all so well. I was able to replace my cam stack gear in my 830, and fix the parabolic timing thanks to you. You are a huge blessing, as no one would repair this antique beauty. It would have been a sin to trash or part out this machine. Thank you so much for taking the time to make this.
Thank you!
What a professional, wow! This man must be a trained mechanical engineer. Just wonderful to watch.
Agreed !!!
Thank you so much for this video. I recently purchased a 730 Record online and knew based on your videos that we would be able to bring her back to life. And sure enough, it was a repair we could make ourselves and the machine is now running beautifully. Thank you again!
Your videos are beyond education! Thanks a lot! I fixed my broken Bernina 830 based on your videos (also the timing was very helpful). One thing that I noticed is that if the selector level finger does not sit properly on the patterns it will jump and make a noise. This may happen due to different dimensions of the new part and the selector finger may tough the neighor patterns causing wear, jump and noise. So I think the lever position ladder had to be also adjusted for the first and the last patterns so that it fit properly on the patterns.
What a super video, Neal. I have this precise problem with one of our machines, and while I could have fumbled through some of the more basics aspects of the repair, I'd have come unstuck at several points along the way without your guidance. I'm ordering the part tonight and will post my - hopefully successful - outcome once the job's complete. Articulate and beautifully presented. Thank you!
Thank you so much! We are glad the video was helpful. Unfortunately, Neal passed away last year after a long fight with his health. But please feel free to tell us of your outcome!
@@nwatson2595 Oh dear this is the first video I have watched of Neal and was so impressed with his knowledge and how he presents this repair. One of a kind. My condolences to you and his family and friends, I can believe this good man will be sorely missed by many. I am saddened myself
@@lindamorgan2678 Thanks! We miss him, too.
Excellent video Neal. I trained as an Industrial Sewing Machine Mechanic in 1972 in Ireland and worked both in Ireland and Canada for many years. I'm retired now and still doing service and selling a few better quality machines. Just picked up a 730 and fortunately the gears are good.
My theory on why these gears break, is expansion and contraction of the metal. When the core shrinks, it breaks the bond with the plastic/nylon gear, and you get a bit of "Play" which eventually breaks the plastic. There isn't much torque on these gears so they should last. Any Play in gears is eventually going to cause problems.
Manufacturers started using plastic as people demanded lighter and quieter machines, and of course cheaper machines. A few manufactures have gone back to bronze or brass. To build a machine of this quality today would cost over $3,000. As sewing machines are precision and need to be built with good quality materials, you have 50 year old machines like this 730 still being used today. My one worry when repairing older machines is Electrical issues. I have seen exploding capacitors and Foot Controls starting fires. How many people would use 50 year old electrical appliances?
I always encourage serious sewing enthusiasts to get old machines that are well built, but take it to a qualified Mechanic to have it checked out. I also advise that people only use Mineral Oil, as other oil leaves residue and you will be left with Varnish. Many machines also use Wicks to lubricate parts and using the wrong oil will eventually mean the wick plugs up and even though you add oil, it doesn't get where its needed.
Thanks for the excellent video and good advise.
I agree in part but Acetal (Delrin) has an even greater expansion characteristic than steel. Additionally, Acetal will outgas and entrop (short for entropy) over time, (probably 50 to 75 years) thus you have shrinkage. To avoid the cracking issue, The Swiss factory began stress relieving the plastic billet on the hub with a Branson ultrasonic welding machine. Certain of these parts like the hook crank eccentric, worm gear, and late model vertical gears have not failed to date. That process began in 1972 was only applied to the hook crank, later on the other aforementioned parts. Thanks for the observation.
The problem at the time was pressing an Acetal (Delrin) disk onto a knurled aluminum hub. The problem was tremendous stresses in the disk where the finished machined gear would develop a crack at the weakest side of the gear, always in line with one of the holes and tooth groove. This was solved in 1972 by means of applying a Branson ultrasonic welder to heat up the disk while mounted on the hub, causing a melt around the knurling, thus stress relieving the disk prior to machining. Today I'm seeing cracking of the Acetal gears that is due to outgassing of the plastic and associated shrinking of the part. We call this "entropy"... :-) Finding this kind of thing most commonly on 830, 850, and 900 Nova vertical, camstack, and hook drive gearing.
Dear Sir. Thank you very much for this very informative video. As I recently purchased a Bernina Record 730, I am keen to see as many service techniques and tricks as possible.
Thank you! This is my next repair as a new tech and my trainer is amazing so I want to impress him with doing my homework. This is so helpful!
Hi Neal - please move to UK, prefereably next door. Going to look at your site to see if I can get some answers. These machines were BRiLLIANT.
I love GB... Lived in Scotland for two years.
Hi Neal. I just found your RUclips channel. It's awesome! Its good to see you. 🙂
Thank you so much. I have a 730 Bernina Record and wanted to get to know it a bit more so I can do some basic maintenance and adjustment. Your video was so helpful and I feel confident to give some simple checks a go with my machine.
Hello, first of all, this is a very educating and thorough video and we all thank you for that.
My question is, can I clean bernina from an old oil just by spraying it from top compartment. with some isopropyl alcohol in a can? And after that, just lubricating at the red points.
The reason for this is that machine I bought stayed in some place without air circulation and oil attracted and was infused with all those fine prehistoric smells of good old days )))
I have cleaned the bed from an old oil and replaced the mat, then cleaned the motor compartment and motor. Now when the motor runs and heats up - no more smell from that area.
But the biggest area of smell is ofcourse in the upper region. This is why I need your advice. Should I remove the bed and just spray it from top with ipa or acetone and lubricate afterwards?
Or maybe there are plastic gears somewhere inside that would get ruined in the process. The ones I see, I could maybe avoid from spraying. I don't know how many are there in total.
Or is it much safer to do it step by step? Just thinking about that makes me cringe, because I don't have knowledge/tools/service manuals to make adjustments afterwards if something gets installed wrong. Thank You once again for you contribution!
Bloody fantastic Neal. Thank you. You have explained everything beautifully. I managed to get my crappy Chinese repro gear in and the swing timed perfectly thanks to you. Yes it has the slackness but it seems to be impossible to find a good one. If you sell good ones I will order some.
Wow! Not sure if I am going to tackle this, but it was very informative! I am going to watch it a few more times.
Thank you more than I can say for the time you spend making these videos. They are amazing, easy to follow, and show the close-up areas with great detail. Question: What variation in size of the replacement Cam gear can be tolerated? The gear you show has a profile that is also off center. Is it even possible to find replacements that are NOT off center? You discuss undersized gears. What is the risk if you end up with a gear that measures a bit larger? I guess in summary, how do you know when you receive your order for a replacement gear, how do you know if it's worth putting into your machine? And how much help are digital calipers, even if you have a nice set?
Great video! I look forward to seeing the next one.
Confidence boosting and very informative, I have a 830, 801 and a 707 (with a split in the cam) and just acquired a 740 favorite which I believe is similar to the 730 so will be using videos regular as a reference . The 740 has a seized satin lever and knob, wouldn't it be great if you did a tutorial on that , sorry I'm just being selfish. Great tips though.
Wonderful video! I have also found that Goo Gone works to dissolve oil lacquer, keeping all those chemicals away from the plastics and rubber. In all my years of "all vintage machine" repair (so not an expert on any), I have seen one 730/740 (I think) with all metal gears. Was there one or am I thinking of a different model? Thank you for keeping these wonderful machines from the knacker. :)
Hello, I would like to express my appreciation (along with many others) of your brilliant videos. I have recently acquired a Bernina Record 530 , I think it has probably not been used for many years but it looks in good condition and works, however the ornamental stitch selector will not move. I wonder if someone could advise me please? I've oiled it carefully according to the instruction booklet.
This video was very helpfull sir!
Very good explanation. Thank you very much. Greetings from the Netherlands
In case you can see this question-
I got a 540-1 favorit recently. No surprise it’s a beautiful machine. Other problems have al been sorted except a broken worn wheel meaning zigzag stitch only without pattern stitches. Now got to know here cheap spare parts are readily available, so intend to fix this. But I’ve chucked out the broken part. Do you have the specs of this worm wheel? Diameter, number of teeth etc.
Thanks!
Muchos gracias muchas ayuda para me
非常有价值的视频 ，对我很有帮助，感谢你的分享，👍👍👍😀
Great video as always.
This guy is the High Priest of sewing machine mechanics! Watch and learn you saucy tinkerers.. ☝️😇
Hi. Enjoying your video on this machine. I have a 530 record it will zig zag but I can’t get the patterns to work. All levers move freely. Would appreciate any help plz
Great video! Thanks for sharing your information...
Merci beaucoup
Thank you, you help me very much ❤️
Also just to say that I've watched this video very carefully, but as far as I can see the Camb Stack Gear is not broken on my Bernina
Great information - thank you!
Great video. I have a bernina 730 record that has a broken pin that rides on the cam cluster. Is it possible to source this item. Hate to have this machine nine functional for such a small part
Hi Neal I love your videos! I have bought an 830 Record at a sale b/c I grew up on my mom's and she still has it and the price was irrisistable. I took the cord in to get it replaced at a local Bernina sew & vac. They said they could put a new end on the cord, but not to start the machine b/c the gears may crack. Soooo. I have restored a lot of 1940's singers and vintage knitting machines. Marvel Mystery Oil works wonders on knitting machines. Do you think it would be useful to soak the gears with MMO to prevent cracking? I have found it to be safe for plastics and metal. Or what would you suggest? Thank you.
Sorry to get back to you so late.
No..... Acetal is not permeable to oils, solvents etc, so MMO would not help matters any.
The problem was solved by Bernina in 1972.
The initial problem here was that the Acetal (Delrin) disk had been pressed on a knurled metal hub. The constant expansion stresses coupled with the outgassing of the material, hence (shrinkage), put an early end to the parts. The problem was first noted on the 830 hook crank's feed lift eccentric. A loud click would be noted in these early models...These models had serial numbers of 11and 12xxx xxxx or 1971 and 1972 models. There are still many of these machines in consumers hand who probably had hearing issues.. I dunno...
The repair was to apply an engineered energy directing tool called a "horn" on a Branson ultrasonic welding machine against the Acetal components, turn on the for about 3 or 4 seconds, and le voila', the acetal would have instantly melted all around the knurling thus stress relieving the acetal.
After this fix, there were no reported issues thereafter.
It is a shame that today aftermarket gears are not stress relieved and are subject to cracking... An example is a cracked Bernina 830 vertical gear from PD-Sixty after 2 years in my parts storage.
I must say however, that I've found the vertical shaft gears cracking in machines as late as the 830E and 900 Nova machines. This is obviously an outgassing problem due to age. Yup, entropy gets us all in the end...!
I'm located in Australia and was surprised to see that my Bernini 730 has a metal cam stack gear. It is a second hand machine and I do not know if it is original or a replacement.
Would love to see this. Can you send me a photo?
Do you by chance have a part number for that Bernina cam stack tool? i have done enough of these at this point that it would nice to have one.
How to open the top please
Hello Neal, I'm wondering if it is worthwhile to replace the motor on a Bernina MiniMatic 707? It belonged to my mother in law, and when she passed my wife took possession of it. Problem is, my granddaughter leaned her laptop computer against the foot control with just enough pressure to cause the motor to activate, but not actually turn.. it sat that way for quite a period of time, causing the motor to overheat to the point it totally destroyed it, burning a hole in the carpet, and almost burning my house down. The machine sewed many articles of clothes when my mother in law had it, and it has some sentimental value. Is it possible to find a used motor, or I'm wondering if the cost of a motor would make it worth repairing the machine.
Yes.
Thanks....thanks....very nice
can you instruct me on how to open all the covers on my bernina 770 QE, I need to clean inside completely cuase a did a lot of sewing with canvas that was treated with something that let a lot of dust all over, please advice, my bernina dealer is too far away and i don't have a car.
beautiful machines
Would this work for an 830. Sorry if u answered it already in the video. I just started watching
Yes but you have to remove the button hole bearing plate.
Yes
plz more videos
Thanks for your interest....See the 10 point adjustment Parts I and II. Look for SewTechnical videos.
great video...have a bad vertical gear on my 830. ugh
No biggie. Easy fix.
@@nealiund7284 Yes but I found getting the shaft out is far more difficult on the 830 because there are things on the way. Gear, cam etc are all the same though.
Hello sir, Can a singer 3314!c singer that doesn't take cams be converted to a singer 3317 that does take cams by changing it to a multi cam mechanism bloke the singer 3317
Geat video.Thank you
Recommend a source for the Worm Gear?
Try sewingpartsonline.com.
Gear camstack for brother zu2 b680
Are you asking for information in replacing the gear or the part itself. If that is the case, it would be no and no.
por favor en español como subir y bajar los dientes de la máquina
Lo siento, pero mi espanol is muy pobre! Sin embargo, debe ser un buton en la esquina derecha abajo. Tiene dos controlas, una que anda la position de la aguja, y la parte atras anda los dientes. Al derecho baja los dientes y al izquierda sube los dientes. Cuano los dientes estan abajo, tiene que anda la maquina una vez ante de que los dientes puede subir. (Por favor digame si puede entender!)
hello, i am very sorry to hear that another irreplacable Galactic Pot-Healer is in better place now. Especially that myself i am struggling with correct setting of my bernina 730. unfortunately in Polando i haven't found a one living soul who would have any idea about servicing bernina. had to get manual, setting book, exploded view and even tools catalogues in order to replace camstack and vertical gear. all i need are technical dimensions of servicing tools. I would really be grateful and appreciate if somebody please help me with a tool referencing number N32NU2. This is a needle-like looking tool used for centering oscilating block of a zigzag operation. This place seems like the last spot i could get help. Anyhow i wish You all Happy Every New Year and much healt, wealth and PEACE! Whoop Whoop!
Good effort, but very poor lighting. Unfortunately you confuse gear with stack too often.
Yup, you are correct. We did this as a first attempt with no script. Hope to redo this one later on.
bernina 217
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