I did this job with a suitcase that I bought second hand to have it stored as a spare.
When I received it, I saw that it had some broken pieces, because of some accident or fall.
So now I will prepare to repair it and make the broken parts.
NOTE: It is not possible to replace the cylinder of the keys of the suitcases without disassembling the two halves.
The disassembly is very similar to the disassembly of the two halves of the Top Case.
1 - Remove the cover that is painted

2 - Once the painted lid is removed, with an 8 mm base wrench, remove the 4 nuts and we will have half of the suitcase out.


3 - Once we have half of the back of the suitcase, we can work well. So now we have to catch and give a lot of hot air through the central part both inside and outside. With something that is strong to leverage, I have used the keys to remove the tire covers, because on the one hand they are curved and do not slide to any side.


A lot of patience that going out will come out.
Once we have them off we find this aspect:



Now we will remove the 7 screws seen in the photo.

Once the screws are removed, we remove the cover of the key and we already have the screw where the key cylinder will come out.

This is all, for the replacement of the key cylinder.
Now I detail what I have found match in case any of you happened the same as the suitcase I bought second hand.
Broken plastic parts:




When I have time I will make a piece to replace the one that has broken.
The other piece, in good condition:


It also has two broken pivots of the top cover where the key goes:

Now the pivots are hooked and ready to put some black rubber silicone:

I hope that this little tutorial will help someone who is in the situation of replacing the cylinder of the suitcase key.