Where is the blower motor located? on 1991 BMW 318i

I am looking for the location of the blower motor in a 1991 BMW 318. Also, any information on how to repair the blower motor would be helpful.

Asked by for the 1991 BMW 318i
The blower motor is located behind a panel in the top center of the engine compartment, right at the firewall. You will have to remove several screws and lift up the water seal to access the blower motor.
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I would go here for the proper instructions on how to access this component and how to test it etc.