Sean K El Cajon , CA May 18, 2025 Appliance: Whirlpool Washer WTW4800BQ0 Whirlpool Washer Wtw4800bq0: The clothes would not come clean. How to replace Washer Gear Case. I found that the adjitator was moving freely from the drive gear on the transmission. I replaced the transmission and the adjitator cam. I recalibrated the washer and it is working good as new. Do-It-Yourself Rating: Repair Time Estimate: 2+ hours