I got lucky and found a spare power steering pump at Pick-n-Pull to rebuild back around Thanksgiving off my perfect parts truck ('85 C20 6.2L/Th400, a/c, dual tanks, and what looked like a class V tow hitch that they decided to use to support the back of the truck
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Disassembly:
Step 1: Remove the pulley - requires a specific puller because it's pressed on, but it only cost me $25 from Harbor Freight.
Step 2: Remove the brackets
Step 3: Remove the bolts/studs and pressure union from the back of the reservoir - I clamped the pump in a wood vise to do this
Step 4: Remove the reservoir - couple hits along the edge with a rubber mallet did the trick
Step 5: Remove the end cover - this is held in by a retaining ring, there is a hole in the housing you can stick a punch through to pop an end of this out. Behind the end cover is a spring.
Step 6: Place the pump on a solid surface and tap on the shaft to remove the thrust plate and cam ring, the vanes will likely fall out of the rotor as well.
Step 7: Remove the Shaft/Rotor assembly - I used a small sledge and a soft piece of wood.
Step 8: Remove the Shaft seal - a seal puller makes this a breeze
Got the entire pump disassembled and found out I needed a new shaft bushing that wasn't included in the kit I bought. So I had to wait a few weeks to get the bushing and find some more time to work on the pump. The bushing also needs its own remover/installer, but I was able to use some bolts to persuade it out (3/4" hex head) and press the new one in (old leaf spring bolt and a shorter 5/8" grade 8 bolt) without damaging the pump housing.
Reassembly was pretty straightfoward, used a block of wood and a sledge to reinstall the shaft seal and shaft assembly, and a socket and the wood vise to compress the endcover back into place so I could install the retaining ring.
Still waiting to put this in the truck due to weather, but overall this was a pretty easy project; the hardest part being the bushing.
