R-P, as others have already said, your post is excellent. I managed to disassemble the motor just as you described despite not having photos of those stages. (I managed to snap the wiper arm though as it was weakened through corrosion and well stuck on the spindle.)
I left the motor alone but opened up the gear housing which had a lot of debris in it. However I couldn't get the main nylon gear off its spindle to see the contacts underneath. It came part way off (about 3mm) but then seemed to have a "notch". Have I missed something?
Anyway, it had a good clean up and after re-assembly wiped ok but wouldn't park in the right place. I'm guessing this is due to contacts under the main gear wheel which I couldn't access. Any thoughts?
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