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?

wiper motor.jpeg