John R West Springfield , MA July 01, 2017 Appliance: Whirlpool Undercounter Dishwasher GU2700XTSB1 Whirlpool Dishwasher Gu2700xtsb1: Dishes on the upper rack were not getting clean. How to replace Spray Arm Bearing. Replaced the upper spray arm seal 78 People found this story helpful Do-It-Yourself Rating: Repair Time Estimate: Less than 15 minutes