I posted yesterday about what grease to put into the mono wiper motor, and am now realizing I have a NEW question to ask.....

How do I open the motor? I have my complete wiper arm out. There's a single screw on the back of the motor that allows the big plastic piece on top (the one you see when you approach your car) to get a bit loose, but it doesn't come off. I don't want to bust it.

The only other screw I see, is the big center bolt for the wiper arm. I don't want to take that off if I don't have to.

I read another article, but don't see anywhere where it says how to take the motor apart so you can get the old grease out, and put new in.

1991 300d 167k