Sewing Machine Foot Control Pedal - Repair Tips
Look what is inside the sewing machine a foot control. These photos help you understand how to use and repair the foot control pedal.
In this article I'll show you two types of sewing machine foot control pedals. First type is a modern model controller of computerized sewing machine.
In the second half of this post you will see what is inside the foot control pedal of old sewing machines or modern budget models machines, having oscillating shuttle hook system.
Never open the electrical appliances themselves. It can do experts only. But if you're curious, you can look at what is inside the pedal using my photos.
Inside you will find not too many details. Inside the controller is one rheostat.
This is a very reliable type of pedal. If your sewing machine is running in spurts, that probably is wiped out two tracks of resistor.
If you are removed the cover of sewing foot pedal it's desirable to lubricate the internal friction locations and joints with a few oil drops.
This is the connector for joining the pedal to the sewing machine.
The power supply cord is connected separately.
Now, you will see what is inside a foot control pedal of old sewing machines or most budget models machines.
This is controller of old model Juki sewing machine made in Japan.
To remove the cover you need unscrew only one screw.
Inside you will find a ceramic case.
Inside this ceramic block is placed a lot of thin graphite plates. A wedge presses down the plate that compresses all graphite wafers into the rheostat together. The more they are compressed to each other the faster the rotating electric motor of the sewing machine.
If you remove the screw and pull of this plate, you can see these rheostat graphite wafers.
Remove it is needed if the foot control requires too much pressure to get up to speed.
On this photo shows a device of another sewing foot control pedal, but the graphite plates are identical.
After years of work these plates are burned out or covered by a touch, which prevents good contact between them. In some circumstances you can repair the pedal if you can remove carbon deposits.
But keep in mind that these graphite circles are very fragile. Besides, keep in mind that repairing electrical appliances should be done by specialist only.
English isn't my first language, so please excuse any mistakes and help correct them.
E-mail for sending is on the contact page.
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