Upper left rack roller broke, had to replace rack adjuster assembly

First I had to take out the end caps on both sides of the upper rack - easy enough - you push in the direction of the arrows and they open up and come off. Then I took the rack off. Using the smallest allen wrench I could find in my ex-husband's set that he left behind (yay!), unscrewed the old rack assembly. The (blue) adjuster level doohickey popped out when the old assembly came off, but it was easy enough to fit that back in properly by looking at the right-hand one that was still in place. All I had to do was fit the new rack assembly into place, put back a few screws, and slide the rack back into place. Put the end caps back on and you're done. Maytag should offer free replacements for this part, IMO- the wheels are too flimsy to begin with, our dishwasher is only four years old, and the new part is pricey, at $29.45 a pop.