Before you replace the Wiper Arm, make sure the wipers are set to park and take off the washer hose elbow from the air inlet grille panel. Take off the cap on the Wiper Arm nut and afterwards remove the nut. In case moving the Wiper Arm doesn't help it come off, use the Wiper Arm puller (J 39822) for better grip. After loosening the Wiper Arm, take it off the
Drive Shaft and take off the
Wiper Blade from the arm. When installing, put the Wiper Blade onto the Wiper Arm and double-check you have not switched the left and right stamped wiper arms. Put the Wiper Arm onto the Drive Shaft and line up the center of the Wiper Blade with the black marks on the lower center windshield. Put the nut on the Wiper Arm and tighten it with the nut near the air inlet grille to 26 n.m (19 lb ft). Screw the nut cover on and re-connect the washer hose elbow onto the air inlet grille panel. Finally, move the wipers back and forth to test that they are working as they should.