Been finding a pool of p/s fluid under the car for the past couple of weeks. Have been topping off daily. Level drops from max to almost down to minimum.

Got under the car today and found source of leak. Top of the steering gear. Where the shaft comes into the s/gear down from the lower u-joint. I think this is called the "pinion". My question is, has anyone tried to replace the seals on the top of the steering gear? If so, how difficult is it?

Any help would be appreciated. Thanks in advance.

87 volvo 240dl