The power steering box on my 85 300d was leaking from the input seal. To make things easy, I just swapped in the box from my 83 300d parts car. The box didn't appear to have any leaks and did not have any slop. Once installed, it steers too easy to the left and not easy enough to the right. Comparing to the old box I'd say 50% easier steering left and 50% harder to the right. It steers way too easy to the left and just slightly easier than manual steering to the right. this is not just from center either, steer all the way to the left easy and as soon as you start turning right it's harder and vice versa.


Any idea what would cause this? Worse case scenario I'll just reseal my old box but would like to fix this one if possible.

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1985 Mercedes 300D bought for $400 work in progress. Video Playlist: https://www.youtube.com/playlist?list=PLeYmvdiw3Xm87mFck3FjQ12ZoTSFXZ0Rr