Power steering gear box leaks (pictures)

If you do end up removing the steering box to disassemble and replace rubber parts, the one trick I didn't know when I first tried it is that you need to assemble all the thin round plates, then turn the input shaft ccw and hold it there to keep the plates tightly in place as you slide the innards in. If not, the plates slide down and get out of place. That was ~1988 on my 1969 Dart. After trying 3 times putting it in the car and taking out and seeing it wasn't steering right, I gave up and got a rebuilt one. On a later pass in 2010 on my 1965 Dart, I must have been smarter since I figured that out and works fine. But, you can change the input shaft and sector shaft seals in-car, but not the top sector shaft adjusting nut (rarely leaks). For the sector shaft, you remove the Pitman arm, then the circlip. The trick to the seal out is to run the engine and actuate the power steering (best w/ wheels down to load it). The pressure that builds up should blow the seal out, which also helps sweep out any crud.