My rear wiper has recently been groaning and giving up after a couple of sweeps but always seemed to come back to life later.   I had seen a thread with photos of where the cover was removed and the gears etc greased but cant find it now.   Mine was a bit dry but after an initial greasing and refit then a more thorough strip down and lube the motor was still labouring when the blade was in contact with the screen.   I bit the bullet and removed the motor assembly an