Just a tip here which helped me when I needed the knuckle off to do the UJ
Undo the 3 bolts using a 13mm socket.
You might have to turn the steering back and forth to get to all the bolts
Then copper slip the bolts and put them back all the way then undo them 2 threads
Then tap the bolts, each one going around and the knucle should move.
Slacken the bolts off accordingly as required. and keep on tapping till it slides off
This is a lot easier than trying to knock the front edges with a big hammer and causes less damage
This worked both sides.
Dont forget to clean the knuckle up and copper slip it when you put it back (makes life a lot easier in the future)
Captain