Assuming front axle in a FWD, release the nut holding the axle to the hub. If you don't have an impact wrench, remove the wheel, remove the cap covering the nut, remove the center cap of the wheel, replace the wheel, lower the car, hold the car with the brakes while you loosen the nut. Lots of leverage will do it. Don't forget to remove the cotter pin. See if you can snake the axle out of the hub. If there's not enough range of contortion, undo the hub from the strut. That should do it. Then take a BIG screwdriver or crow bar and pry the axle from the tranny. Take care not to nick the tranny seal. Maybe best to have a tranny seal ready in case. installation is the reverse of removal except there's no prying involved.

Take a good look at how the old axle fits so you know you've installed the new axle properly. You should hear and/or feel the circlip engage in the tranny.

Sixto
95 S420
87 300SDL