Here is how I pressed the shaft out
http://s1142.photobucket.com/user/52_Ton/library/57%20Olds%2098%20Starfire?sort=3&page=1
Once it was out I had to straighten the washer out and then replace the diaphragm and reassemble.
I bought the kit from Hal at http://www.classicpreservation.com/fuelpumpkits.html
It came with full directions to do the rebuild.
Hope this helped.

Mark

1952 GMC 9430 one ton pickup, a work in progress

1952 1-ton pictures on Photobucket