been there, done that on my 95 e300d. paid 1200 for a new pump that has all the connections.
w124 E300D Power Steering Pump Failure Dilemma

Now I'm fed up with the car, has new p/s pump, starter, alternator, belt tensioners, and a ton of other junk that broke on me usually stranding me somewhere, most parts have less than 5k on them.

Went back to w123s.

Want to buy a car full of spare parts?

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1982 300D (w123, "Grey Car")
1982 300D (w123, "Blue Car")
2001 Ford F150 "Clifford" (The Big Red Truck)
1997 Dodge Ram 2500 12V Cummins
1996 Dodge Ram 2500 12V Cummins
Previous Vehicles:
1995 E300D, 1980 300SD, 1992 Buick Century, 2005 Saturn Ion