I'd support the pump shaft as close to the pump as you can.
A hydraulic jack works well.
The bearing in the pump can become brinelled if you don't.
https://www.google.com/search?q=brin...hrome&ie=UTF-8
Also pay attention of the way you remove the charge pump if you remove it.
On the 2 mounting bolt ears, one has a milled flat on one side.
Make sure you reinstall it the same way or the pump will not pump.
