Look at the front of the washer fluid tank to see the pump(s) by tracing the electrical connection. I have two on my wagon, because of the headlight wipers I believe. You may only have one.

Disconnect the electrical connector and hose from pump and simply pull the motor out. It is just a friction fit to a grommet in the side of the tank. Replace the grommet when you do the pump. If the tank has fluid in it you will lose it all while replacing the motor.

Really, if you just look at it for a while you will see how easy it is.

Search the part on this forum for pictures of the pump and the grommet so you get the idea of what you are looking for.

Good luck!

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2002 E320 Sedan 93K Designo Mocha Black Metallic!
1995 E320 Wagon 205K Black Wagon
1982 240D 183K SloPoke

I believe each of these cars are the final production year for that model.