I followed the instructions below that are found on the FAQ.

Shaft Seizure on rear wiper on 940 GLE wagon (91).
"The reason for the constant failure of these motors is because the linkage going out through the rear window needs greasing every year. This takes a salt pounding all winter and seizes up, over-stressing the motor and burning it out. Remove the nut holding the rear wiper arm, then the arm, pull the rubber protective cap, remove the black plastic collar surrounding spindle, remove the tiny C-clip, then a washer and a tiny black O ring, and you will find the assembly slides in and out freely for lubrication. "

I shaft is difficuLt to remove. I tried to pull it with pliers but it is not coming. I am afraid to break it. Do I have to remove any other nuts and bolts?

Thanks