Wipers were not working so had a look at dieters site.
Disconnected the wiper motor (connector block just to the left of the motor).
Took the black motor cover off by removing the two torx screws.
WIPER MOTOR.jpg
Removed the casing with a good pull (magnets hold it on aswell)Poured out the water and sludge.
rotor.jpg
Spun the very wet rotor by hand to get most of the water off then sprayed with lots of wd40 to expell the remaining moisture.
Put the casing back on, connected back up, key in ignition and hey presto wipers working again.