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My dishes in the lower rack are not being cleaned. No dishes are blocking the sprayers. I have found that the Dynamic Lower Spray Arm only appears to rotate when rinsing. It definitely rotates during the Rinse Only cycle. However, any time I put it in a wash cycle, I’ll open it up mid-cycle to find that the arm has not moved. I’ve checked this during multiple points in the wash cycle. Is there anything I can fix or is this a service call? Thanks!

Whirlpool Global Wash System (GWS) Dishwasher Spray Arm Replacement Instruction Sheet View File PUB W10897840 Rev A Submitter Samurai Appliance Repair Man Submitted 10/05/2017 Category Appliance Repair Manual Pot Luck Supper  

Greetings, my KUDS24SEAL5 was not cleaning very well. I noticed the lower spray arm was VERY wobbly. It spins freely, but is VERY wobbly. Yesterday, I replaced the washer arm bearing (WP9742946) which was worn paper thin. I also replaced the split ring bearing (WP3376846) on the bottom of the spray arm as well. Though not part of this discussion, I replaced the split ring bearing on the upper washer arm as well. I have only run one small load since, and it appears to clean better. Too early to tell at this point. One thing that bothers me is that even after replacement of the lower washer arm bearings, the spray arm was VERY still wobbly. I didn't expect it to be. The spray arm has what I would estimate to be 1/8" - 3/16" axial play if I pull directly up on the spray arm. How wobbly should this spray arm be? Is there a clearance spec for it? Could the flange on the spray arm nut be worn so much to allow this wobble, or is the wobble normal? It doesn't look worn at all. Thanks.