Roberto S Diamond Bar , CA September 07, 2016 Appliance: Whirlpool Washer WTW5540SQ0 Whirlpool Washer Wtw5540sq0: It wouldn't start. How to replace Washer Agitator Dogs. I replaced lid switch, water level switch and these parts agitator bolt, agitator dogs, thrust spacer washer works like new great products. Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes