Wiper Motor Lube and Maintenance

On the wiper motor, two speed...(this is a two speed, right?)
Is there a way to grease the internals or drop some oil in there?

This is for my sons first car, 68 Dart 270.

And has anyone done a detailed disassembly ? I guess ide have to grind the riots off and I have no way to redo them. Meaning I don't know how or have the tools.

I still need to do a bench test on it. Which I need to figure out the terminals first.

Besides a bit of grease on the stator shaft, what about the inside of the casing?

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Most likely the grease inside the housing is hard as rock. you can grind off the rivets or drill them out and use small screws and nuts to put it back together