Sharon H Port Huron , MI December 05, 2014 Appliance: Whirlpool Washer WTW6600SW2 Whirlpool Washer Wtw6600sw2: Agitator wasn't functioning properly and "growling". How to replace Washplate Bolt. I replaced the washer plate and new screw/washer part. Easy fix and back up and running in ubder 10 minutes. 30 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes