I never tried to take a set of kingpin spindles off before and I'm having some troubles. I just want to take them off from the front trailing arms. I took the main bolts out of the trailing arms and twisted the ends of the link pin but no luck on knocking them loose.

You should be able to knock them out with a hammer. Make sure you take the bolts all the way out and off the arms hit both pins till they start moving there are shims in there make sure you keep them in order.

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get you some

Take a skinny chisel or screw driver to the split where you took those bolts out and widen the gap. Then spray with break free and let em sit for 10 minutes.Then sledgomatic while the chisel is still in there.Propane torch is darn good aswell.