Power steering pump problem
I did it while it was still firmly bolted to the block. Biggest PITA nut I've done on the car.
Yes, it IS a 16mm hex. Sears sells both "stubby" box/open end combination wrenches, as well as "crowsfoot" wrenches that will do the job.
In case you haven't gotten there yet, the pump is attached to the bracket with 2 10mm hex bolts. You access the bolts by going through the holes in the front of the drive pulley.




