Hello,
Welcome to FixYa.
Yes the upper rack is pretty straight forward, but the bearings are tricky.
Here's what works for me, move the rack stops to the left if you haven't already and then the rack itself.
i.e.
and
Now you'll need to remove the bumpers at the back of the rack rail...
i.e.
push down on the bumper as shown
and pull it down and out at the same time...it takes some force as evident by my finger tip ha ha, you can use a small screwdriver...I'm just stubborn.
Now you'll need to slide the rail all the way out as shown, but careful not to let the ball bearings fall into the sump area in the process.
I usually hold the broken piece in place while removing the rail...
The trick now is to install the balls into the holders first...
and the holders into the stationary part of the rail on the inside wall...
The inside wall rail will keep the holders in place as you slide the inside rail into place...this will usually require holding the holder with one hand while pushing the sliding rail back into place...
Once this is done, re-install the back rail bumpers followed by the rack and then finally the front rack stoppers and that should do it.
Hope that explain it for you or gives you an idea of how it needs to be done.
Thanks for visitng "fixya" today for your repair help. Let me know if you require further assistance.
Good luck.
Regards,
Macmarkus :)
P.S.
I should also mention you as I alluded to, be sure none of the old 8 ball bearings didn't fall down into either the drain pump or circulation/wash pump. This is something I've seen far too often on Asko dishwashers with the end result being a broken impeller in either pump...or both, yikes ! I use a telescopic magnet to fish around as it will be the only object made of metal...unless something else has fallen in the sump well area, it's good to check.
Again, good luck :)