garage door fell on to rear door wiper

[dzhoka]

Yes my grammar is painfull -"Garage door fell on to rear door wiper" ---- thank you to those ,who did understand ! I need links to potential junk yard sellers.. . Where and who possibly can deal. Or someone,who preveously had expirience with such subject.
And I'm not shur yet, what exactly is broken..because wiper still works .
The electro motor (itself) is not stable and vibrating innormously,when turned on. That fact ( vibration) is indicate broken holding motor plastic details/holders.
Is it more understandable/better ?