MOTOR SERIES #3: Servicing Common Motor Styles (1950s-1970s) Bearing & Brush Maintenance
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- Опубліковано 23 кві 2019
- Each motor series video attempts to highlight various motors you might come across in vintage machines and how to approach reconditioning maintenance. With this video, I showcase a motor design that is quite commonly found in machines ranging from 1950's models thru 1970's and sometimes beyond. Although there mounting brackets and power ratings vary, these motors have access screws for the motor brushes as well as SPECIFIC lubrication points for the bearings. NOTE: Always unplug any machine before working on them whether its the motor or any other area of the machine.
The motor type seen in this video was used by many sewing machine brands and produced by a variety of motor producers. The key features of this motor design allow access to brushes and bearing lube points. Unlike some earlier sewing motor designs such as some of the Rotary machine cylinder shaped motors which used grease for bearing lubrication (some later versions used oil), this motor uses sewing machine oil as its bearing lubricant. Its VERY important to note that these take ONE DROP of sewing machine oil in ONE SPECIFIC lubrication point. Putting lubricant in any other part of the motor can ruin the motor. These motors are not especially difficult to service, but they are very specific in what they require and where!! This motor came on one the Hybrid Vintage machines I am highlighting (late 1970's Janome Free Arm). - Фільми й анімація
this is very useful, I've been looking all over the internet for some information on how to fix this type of motors and you are the only one to have a detailed explanation and an easy follow along demonstration. Thank you for your hard work and I can't wait to watch the rest of the Motor series.
Thanks for the video. I've owned a Kenmore 158 180274 for twenty-seven years. I oil it regularly according to the manual. I ran across a blog that mentioned oiling the motor. I have never heard of this. So here I am watching several of your videos to learn if I need to put a drop of sewing machine oil in either end where the red circle is. I have never had my machine serviced as it has operated wonderfully. I had my husband who is a mechanic and understands motor-y things put 2 drops of oil in there areas indicated from the blog I mentioned. 27 years and I never new. I want my dear Kenny to last me till I can't sew any longer. I hope I did the right thing in having him oil it. Now I am wondering if the brushes need replacing? Thanks again.
Hopefully, your machine will be ok. It is extraordinary how tolerant these machines were, but its great that you oiled your motor. And 2 drops is plenty so I would resist any temptation to add any more for at least a year DEPENDING ON how often you sew. And even if your motor ever did have issues, lots of vintage motors out there for these exist so I would keep doing what you have been. Vintage Kenmores are awesome and often under valued. Thank you for sharing!
If you look close you will see that there is a flat, round, felt oil wick inside that oil hole. The oil soaks into the wick and the wick carries the oil to the shaft and bushing.
I know this is an old video, but I'm not understanding your explanation of which way the commutator turns inside. If you had a visual with something riund, even a toilet paper tube, that would help. Thanks so much for your hard work and I'm sorry I'm not following your explanation.
I picked up a New Home and the motor runs in reverse. Meaning the instead of operating in a clockwise motion , it runs counter clockwise. It runs nice just backwards. I've cleaned and oiled thinking it was gummed up but no help. Is there a fuse or breaker that could cause it to operate like that?
Another great video! I have a Japanese copy of a Class 15 (Precision DeLuxe Dressmaker) I wanted to check the motor brushes, but there are no "brush ports". I attempted to slide the two halves apart but could not. Have you encountered a motor with this structure?? Thanks!
Greetings Abe. You must be very intuitive as I have another video coming on just that topic. I'm going to use the White Model 164 that I made a video on previously which has just this kind of motor (ua-cam.com/video/qJEEQRjHu3w/v-deo.html ) I will show two approaches to this kind of motor and when it might (or might not) be worth taking those motors without brush access apart. A better shot of its motor is actually on one of the TROUBLESHOOTING videos seen here: ua-cam.com/video/p5k14MGpce4/v-deo.html When I make the video for the motor you are asking about, it will be listed as a MOTOR SERIES video. Stay tuned!
I have a White 77 and the pulley is very stiff. Do you recommend manually turning it (a very difficult task) to clean the commutator, or do I need to open the motor to work on something inside first?
if my motor gets hot could it be that i need to do what you are doing right now to this motor? mine is on the outside of my machine. just was afraid to go into the motor part for anything. just don't want to ruin it>
Its hard to say why your motor is hot. When run for a while, all motors will get warm, but you could have an issue somewhere with yours. I would not use it until you have solved the mystery. You might have it looked at by a Sewing-Vacuum center that does repair work.
WD40 was developed to protect the outside of the Atlas missile, which is what sent John Glenn into orbit :)
WD-40 oil is excellent.