James K Lynchburg , VA October 05, 2015 Appliance: Whirlpool Washer WTW5521SQ0 Whirlpool Washer Wtw5521sq0: We were experiencing problems with the top section of the agitator not working. How to replace Washer Agitator Assembly. Ordered a new agitator and replaced it eliminating the problem. The replacement process took about 10 minutes, saving the expense of a service call for the repairs. The washer works great again. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes