Pair of Starter Motor Brushes Fiat 600 Vintage High Quality
Pair of Starter Motor Brushes Fiat 600 Vintage High Quality.
The brushes have the task of transmitting voltage to the rotor, which in turn changes polarity as it rotates.
They must be made of a resistant material but not more than the collector where they work, to avoid damaging the armature (much more expensive).
They are pushed by a spring, they must adhere perfectly to the rotating part, therefore the more they are worn, the more the spring changes tension, you notice when it struggles to start.
They have been built with quality materials to improve their performance.
To replace them, once they have been put on the bench, you need to remove the rear sheet metal and replace them with a screwdriver. It is recommended to clean the part where they work well.
Below is a video of a complete maintenance which also includes the replacement of the brushes.