Repair and maintenance of the window lifter, window lifter does not work

The window lifter does not work because the brushes have worn out and the spring that pushes them does not make contact.
In this video I show you how to disassemble the window lifter motor, clean it, adjust it and test its electrical resistance before testing it and carrying out its final assembly on the car door.
Remove window lifter or window lifter: • No funciona elevavidri...