Alec300SD, since the ASD reservoir is separate from the power steering pump, I don't think I could just loop a hose from the output to the input port as there would be no way to add fluid, BUT I imagine there could be a way to bypass it by placing a hose from one place to another.

I'll consider unplugging the ASD relay if that in effect prevents any load from being placed on the system. I hope it's that easy!

The power steering fluid was very dark. I did a power steering flush and replaced the filter, but that did not correct the issue. The new fluid went from crystal clear to muddy red within a few days from contamination that remained.

The steering box leaks profusely out of the Pitman arm shaft seal (it loses about a quart per month). We ordered a new seal and I will replace it when I rebuild the power steering pump.

The rear wheels are of the same size, but the left rear tire is worn down further than the right rear because it was once on the front and the front left tires wear abnormally fast, and the front end is so worn out that the alignment shop won't touch it.

The entire brake system is brand new and functions properly.

Sixto, I don't know if I can use a regular power steering pump in place of the tandem one. That's a question I wouldn't mind an answer to.

Maxbumpo, thanks for the tip. I have a rebuild kit, so I'm going to rebuild the original pump.

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1967 W110 Universal Wagon, Euro, Turbo Diesel, Tail Fins, 4 Speed Manual Column Shift, A/C
1980 W116 300SD Turbo Diesel, DB479 Walnut Brown, Sunroof, Highly Optioned, 350,000+ Miles