How to Troubleshoot & Replace Whirlpool AP6005801 / WP210690 Rubber Seal

Perfectly! Replacing Agitator Shaft is not for the faint of heart. Replacing output shaft pinion gear on the bottom of the agitator shaft requires care, experience and patience with pressing/driving drift pins without damaging the gear itself. One slip of the drift/punch or press apparatus will ruin the gear/teeth face and will lead to failure of the transmission internally when put back into service. As best as I can tell the pinion gear is discontinued and no longer available so take care! Be sure to replace all seals, gaskets and transmission oil for a comprehensive long term repair. I'm sure a new tub bearing and stem repair kit will also be in order if your making this repair. Best of luck everyone! 

Replaced seal and went ahead and changed tub kit and seal while I had it down.