Mark K Payson , AZ August 23, 2019 Appliance: Frigidaire Frigidaire/Laundry Center FEX831CS0 Frigidaire Washer Dryer Combo Fex831cs0: Agitator making noise. How to replace Agitator Hub. After ordering the agitator I found it didn't come with the hub. The old one looked as though they were together. Very easy to replace, one bolt nut assembly comes out together. Pulled the agitator out, put the hub inside the agitator then both back in together, tighten the nut bolt assembly. Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes