problem solved ,get rid of this post please.

delete please

Which Z you talking about. I suspect it's a 260? You say youv'e loosened the bolts. Does that mean youv'e removed them altogether?

There's an old trick my dad taught me, put an old wheel back on, don't use your new bright an' shiny mags, and as you rotate the wheel hit the inside with a huge rubber mallet (hammer). If you've twisted the half shaft through excess driving torque the spline that fits into the "crown" wheel of the diff will be jammed. Just keep at it. If that fails, try some wooden wedges between the two parts and drive them in slowly, between the hub and the housing. good luck

There's an old trick my dad taught me, put an old wheel back on, don't use your new bright an' shiny mags, and as you rotate the wheel hit the inside with a huge rubber mallet (hammer). If you've twisted the half shaft through excess driving torque the spline that fits into the "crown" wheel of the diff will be jammed. Just keep at it. If that fails, try some wooden wedges between the two parts and drive them in slowly, between the hub and the housing. good luck

Good advise! The splines do become worn and do tend to get stuck in place due to the worn area on the splines. The mallet trick is a good one. Additionally, you can also (with the wheel on) rotate the wheel left and right in an abrupt fasion....this will sometimes get the worn splines to line up with the un-worn section of splines that must be passed over for disassembly.

fixed, just bought a foot long prybar, in between the dust cover on the diff. one crack with my "kung fu thrust" and it popped right out. thanks justaZcarguy (my uncle). peace.