You will want to read this article by Tom Endy regarding the correct way to disassemble a rear axle.
You will need some basic and a few specialized tools to complete the job, paying particular attention to the bearing pre-load adjustments attained by using the thin banjo gaskets mentioned in the article.
Many differentials have been ruined by people with insufficient knowledge and the improper use of tools. Good Luck !
http://www.ocmafc.org/techarticles/T...0Re-Edited.pdf