The power steering box in my 230sl had the usual fluid leak from the bottom cover, so I removed it to replace the seal. Removal is easy with gravity assisting. But almost by accident, I found a sneaky old man trick to re-install. The car happened to be positioned under the hardtop hoist. I tied a strap around the box and hooked it to the hoist’s cable and an assistant cranked it up with me under the car. With a very light touch I guided the box into position and got all three bolts started.
An alternative would be to put a pipe or a 2x2 across the fenders and attach a come-along to hoist the box.
Cheers,
CT