Removing the diff in Mk3 - HELP -

[Icekottarinn]

Sorry for asking, but I am having trouble removing the diff in my Spitfire Mk3.
I wanted to replace the bushes (Item 3 on this drawing: http://www.canleyclassics.com/?xhtml=xhtml/diagram/spitfireiiirearaxle.html&xhtmlcatalogue=xhtml/catalogue/spitfireiii.html&category=axlessuspensiondriveshaftsandwheels&xsl=diagram.xsl)

Can anyone tell me how to loosen the old bolt? I can not loosen it to replace the bolt and the bushes. The bolt is very fastend ;( (Item 46 on the drawing)
And it is very difficult to have tools on that area, not much space.

Any good advices GREATLY appreciated.
 
Thanks!

[rficalora]

I've never done it so there may be more to it than the pic suggests, but my guess is it's just seized up.  Spray some penetrating oil on it and let it sit over night and try again.  May have to do that 2-3 times to break it loose.  Use the longest breaker bar you have to get as much leverage as possible and use it on the nut side.

[Icekottarinn]

Well the bolt is out, but this was not easy!
With a lot of FORCE and penetrating oil I managed to hammer it out.