Power Steering Pump Groan

[cwiert]

This first occurred about a month ago. I suspected air in the system, so I lifted the front tires off the ground and turned the wheel back and forth (with the engine off) about 50 times with the power steering reservoir cap off. Magically the noise went away and all was good... or so I thought. Today, started the car and the groan is back....whenever I turn the steering wheel.
It's a relatively new PS pump (2000 miles maybe), and I'm using the right ATF fluid. Any ideas what's going on? The fluid level is good, and I don't see a leak.
Thanks in advance.
- john

[962porsche]

how old is the pump ? the only time you would need to bleed the air out of the system would be if the sys. was opened and fluid was lost to let air in . when breading the fluid should be at normal operating temp. leave the wheels on the ground so that there is some resistances on the system . now add fluid if needed when turning lock to lock . the sys. should bleed with turning the wheel about 10 times . if no more air bubbles are not coming out then your finished . when you start the car the fluid should not rise more than 10MM if the fluid rises more than that there is still air in the sys. . i should add that this is right from the porsche factory service bulletin from when i work for porsche .

[rcecale]

Procedures direct from Clark's Garage:

18. Fill with ATF Dexron as specified by the owner's manual.
19. Idle engine and watch the fluid level drop, add fluid as needed.
20. While idling, turn the steering wheel back and forth to work out any air in the system.
21. Add fluid as needed.
22. Inspect for leaks, and re-tighten hose clamps as needed.
23. Once all the leaks are gone, lower the car so that there is some weight on the front wheels. Turn the steering wheel back and forth again while weight is on the front tires to stress the power steering a little bit.

Randy

[cwiert]

i think i found the problem. on the back (rear side) of the pump, on the bottom, there is a line/hose that takes the fluid from the pump to the rack (i think). Anyway, i found a leak coming from the bolt that holds that line in. All I did was loosen it, (a bunch of fluid spilled out) and then retighten it and the leak was gone. I guess the seal (washer maybe) in there needs to be replaced or somthing. but it seems to be holding for now. Then I re-bled it, and the problem sees to be fixed. Hopefully it stays fixed.
Anyone else experience anything like that (a leak coming from behind that bolt?)