dishwasher lower spray arm wobble
whirlpool model KUDR25SHWH0
how much wobble should the lower spray arm experience when wiggled? Any if the answer is none, what parts are typically used to fix it?
AnswerHi,
Replacement parts in WHIRLPOOL KUDR25SHWH0 
There is going to be a certain amount of wobble on the wash arm but it is hard to tell you how much. If there is too much wobble the wash arm will not turn as it should. This would cause the washer not to clean dishes as it should.
The repair would be to replace the two little white bearings above and below the wash arm. It is common for these bearings to wear out to the point that the wash arm will not turn as it should.
I hope this helps!
Thank you,
Shawn/administrator