Aaron Z Winfield , IL June 21, 2021 Appliance: Whirlpool Washer WTW5000DW1 Whirlpool Washer Wtw5000dw1: Drive shaft bearing and seal failure. How to replace Washer Gear Case. Replaced the gearbox, which included new bearing(s) and shaft seal. Do-It-Yourself Rating: Repair Time Estimate: 30-60 minutes