I recently replaced my PS Pump on my 92 400E.

Getting it off was a real pain. If I recall, there are a couple of CAP SCREWS with allen heads that have to come loose from behind the bracket. There was also a support for a wire harness that was under that same screw.

I know you don't want to hear this, but I had to unbolt my motor mounts and jack the engine up about 4 inhes to get the clearance I needed.

I had JUST finished replacing my motor mounts before starting on the the PS Pump, so I just loosened them back up and obtained JUST enough room to work...

There are two bolts per side that go vertically into stationary nuts trapped in the motor mounts. I dropped the 4 of them, put a board under the oil pan and used my floor jack to raise the engine. Going back in, it was a bit of a pain getting those 4 bolts to line back up into the mounts. You have a little movement in the motor mount you can work with if the weight of the engine is not on the mount while you are putting the bolts back in. Careful, it is easy to get the little bolts cross-threaded when trying to start them if the mount isn't perfectly above the hole.

Perhaps someone else here has a better solution? This is what I worked out...

Oh, and once it was all over, my belt tensioner gave up the ghost! All of that oil being slung around on the belt got to the rubber in the tensioner and it lost all tension. I think that little gem cost as much as the rebuilt pump!

Best of luck on this! Keep us posted!

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02 S500
92 500SL
92 400E (Sold)
87 300E (Sold)
83 300D Turbo (Sold)
75 300D (Sold)
74 240D (Sold after 20 years)