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Hi all. I've noticed that underneath the little cap of the rear wiper arm there is a gap and thus the nut inside is all rusty. Is this normal or is there a piece missing?
Very normal on my R53. It's worth taking the arm off, apply a little grease on the spindle & don't do the nut up too tight.
There should also be a minute O-ring around the nozzle which may well be missing - it's tiny!
