Change android Jelly Bean google account with no data loss

That should be the correct steps. Up to step #2 I can say so with certainty, while I don't want to give guarantees for step #3:

• on Android 2.x, removing a Google account also removed associated calendar/contact data. You didn't specify which Android version you're asking about, but assuming Android 4.x or higher this no longer should happen. However, I've not verified that myself (my devices run without Google apps, so I cannot verify even).


• if you've used that account to buy apps, those apps might no longer run with the account removed (they are bound to the account), and you definitely can no longer update them.

So instead of removing the old account, you might wish to simply make the new one the "default account". For that, please refer to How to change the account for Android Market?