There is a snap ring on the end of the shaft.

Remove the ring with snap ring pliers.
The snap ring once removed.

Next remove the the inner part of the CV joint from the splined shaft.
I needed to use a small gear puller on mine since it was pretty tight.
Once removed notice the recessed inner part on one end. That side goes on first when reinstalling it or it will not fit on all the way.
You can see it here...

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