I'm getting to replace my head gasket and cant get the a/C compressor to come off even though I have disconnected the two ac lines and the 3 bolts. Any ideas as to what might be keeping it stuck? That's a photo of my compressor with the 3 bolt placements I've removed.

 

Yet to have the pleasure of removing the a/c compressor.
The alternator, & starter came out pretty easy after the not so easy bolts were out,
If you do have ALL the bolts removed, a pry bar with minimal force should help.

 

Is there possibly a 4th bolt right underneath at the back of the compressor, failing that it might just be stuck to the mount, try a few hits with a "soft" hammer, or a length of wood and hit that with a hammer, might just need to shock it off the mounting.

Just had a look on jaguar classic parts, and there are only the 3 bolts, so it's probably just stuck to the mounting bracket.

 

Ok thanks for your confirmations and that I'm not going crazy here with this thing. I'll attempt to unstick it from the mounting plate. I just didnt want to start hitting the thing if there really was a hidden 4th bolt or something i didnt know about.

 

As long as you use a shot filled rubber type dead blow mallet, or a piece of wood, hit with a hammer.
Things should be fine, as long as long as its not still fastened or bound up somewhere, it should not take much