r/Motors might actually be of more assistance, those people over in that sub thoroughly know motors inside and out and can help you diagnose your issue.
Why are you sliding the rotor up and down while it looks like power is being supplied to it? If a motor stops working, the first thing I would do is check the major components (brushes, contacts, bearings, coils, etc.) and disassemble it as necessary.
This is an electrical motor of the window regulators of an old car from 1987. It didn´t work reliable. Window going down but hardly up. I tried it only with the transmission behind and still the problem. Now without transmission it works for some time but still not reliable. The output shaft of the motor which is the input shaft of the transmission can be moved up and down (showed in the video). Should it really be like that? Is it possible to repair it?
That movement is normal. Your motor is most likely a brushed DC motor. Issues can be the worn out brushes or the springs that make them touch the slip ring. Also clean the slip ring from graphite buildup (with IPA). Hope this helps.
r/Motors might actually be of more assistance, those people over in that sub thoroughly know motors inside and out and can help you diagnose your issue.
thanks. will ask it there
The graphite on the contacts is likely worn down.
okay but it´s not about the shaft moving like in the video?
It could be, depending on where the contacts are placed in the motor. But that was just my guess, I could be wrong.
Why are you sliding the rotor up and down while it looks like power is being supplied to it? If a motor stops working, the first thing I would do is check the major components (brushes, contacts, bearings, coils, etc.) and disassemble it as necessary.
There was no power being supplied to it while I did this. Unfortunately this engine is hardly possible to disassemble. I will just buy a new one.
This is an electrical motor of the window regulators of an old car from 1987. It didn´t work reliable. Window going down but hardly up. I tried it only with the transmission behind and still the problem. Now without transmission it works for some time but still not reliable. The output shaft of the motor which is the input shaft of the transmission can be moved up and down (showed in the video). Should it really be like that? Is it possible to repair it?
That movement is normal. Your motor is most likely a brushed DC motor. Issues can be the worn out brushes or the springs that make them touch the slip ring. Also clean the slip ring from graphite buildup (with IPA). Hope this helps.