You should remove the cover from the nut on the wiper arm, hold the wiper arm and remove the nut from the wiper arm, push inward at the wiper arm pivot to loosen it from the drive shaft, use a battery terminal puller to remove the wiper arm if rocking the wiper arm fails to loosen it from the drive shaft, remove the wiper arm from the pivot shaft and the wiper arm blade from the wiper arm and clean the knurls of the drive shaft with a wire brush.
By BobGM Specialist
01/11/2022