Disassembly
Compress the damper spring, then remove the nut (A) while holding the
damper shaft with a hex wrench (B). Do not compress the damper spring more
than necessary to remove the nut.
...
Maintenance
This chapter discusses basic maintenance. ...
Wiper Blades
Check the condition of the wiper blades at least every six months.
Replace them if you find signs of cracking in the rubber, areas that are getting
hard, or if they leave streaks and unwiped areas ...