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Default Brother CS-80 sewing machine bobbin winder not winding.

On Sunday, May 6, 2012 at 6:42:04 PM UTC-7, David Farber wrote:
I don't know much about sewing machines but this does not seem like a
complicated problem.Here are the pictures of the problem:

http://webpages.charter.net/mrfixite...bin-winder.jpg
http://webpages.charter.net/mrfixite...n-winder-2.jpg
http://webpages.charter.net/mrfixite...n-winder-3.jpg

The symptom is when you maually engage the bobbin winder assembly on the top
of the machine and press the button to activate it, you can hear the motor
turning inside but the winder does not turn. The first two photos show the
faulty drive assembly removed from the machine. The last photo shows the
assembly loosely installed in the machine. There is some mysterious black
slime (could it just be lubricant?) which I thought must have been some kind
of belt or idler that started disintegrating from age but the machine is
only about 5 years old. The main belts are in very good condition so it
doesn't make sense to me how this could have happened. If you poke the slime
with a small screwdriver it doesn't make a really big mess on everything it
touches like an old rubber belt does. You can see in the third picture that
the area surrounding the part is fairly clean. I think that small black mark
on the large gear to the left happened when I removed the part. By the way,
the part in question is mounted on a plate that can be manually shifted up
against the main gear assembly to get it to turn. I searched around for a
parts diagram for this model but no luck. I know some of you that frequent
this board have delved into sewing machine repairs and was wondering what
this part is and how it interfaces with the drive mechanism to make the
winder rotate.

Thanks for your reply.
--

David Farber
Los Osos, CA




On Sunday, May 6, 2012 at 6:42:04 PM UTC-7, David Farber wrote:
I don't know much about sewing machines but this does not seem like a
complicated problem.Here are the pictures of the problem:

http://webpages.charter.net/mrfixite...bin-winder.jpg
http://webpages.charter.net/mrfixite...n-winder-2.jpg
http://webpages.charter.net/mrfixite...n-winder-3.jpg

The symptom is when you maually engage the bobbin winder assembly on the top
of the machine and press the button to activate it, you can hear the motor
turning inside but the winder does not turn. The first two photos show the
faulty drive assembly removed from the machine. The last photo shows the
assembly loosely installed in the machine. There is some mysterious black
slime (could it just be lubricant?) which I thought must have been some kind
of belt or idler that started disintegrating from age but the machine is
only about 5 years old. The main belts are in very good condition so it
doesn't make sense to me how this could have happened. If you poke the slime
with a small screwdriver it doesn't make a really big mess on everything it
touches like an old rubber belt does. You can see in the third picture that
the area surrounding the part is fairly clean. I think that small black mark
on the large gear to the left happened when I removed the part. By the way,
the part in question is mounted on a plate that can be manually shifted up
against the main gear assembly to get it to turn. I searched around for a
parts diagram for this model but no luck. I know some of you that frequent
this board have delved into sewing machine repairs and was wondering what
this part is and how it interfaces with the drive mechanism to make the
winder rotate.

Thanks for your reply.
--

David Farber
Los Osos, CA


This is awesome! I have a similar problem with my brother cs-80 and it is great to find this. Thank you so much, this is super helpful. I just ordered a new tire ring for my machine, which also melted, now I'm just waiting for it to arrive.