Power Steering Rebuild - notes and vents

terryr,
You can replace both shaft seals with it installed in the car, which would be much easier. Most commonly, the sector seal leaks (at bottom), and you can buy just the seal kit real cheap (rockauto). You remove the Pitman arm and the circlip retainer. One trick is to run the engine and turn the steering against a stop to build pressure, which should blow the seal out. The benefit is you also blow out any crud. Of course, put a big pan below first.