Jeanne P Doylestown , PA December 15, 2014 Appliance: Whirlpool Undercounter Dishwasher DU1145XTPBA Whirlpool Dishwasher Du1145xtpba: Dishwasher first got louder and louder then stopped completely. How to replace Dishwasher Circulation Pump Motor. After researching, and then using the appliancepartspros.com video to take apart the dishwasher, I found that the circulation motor's bearings had been seized up due to water infiltration. I ordered a new motor, and it arrived in an impressive 2 days. The repair was simple - it was actually more time-consuming to prep the dishwasher for the job/close it up and replace it under the counter, than to actually install the motor! The dishwasher is being used right now for the first time - I'd forgotten just how quiet that old motor was when it was new! Do-It-Yourself Rating: Repair Time Estimate: 1-2 hours