Any time that the power steering system is repaired/replaced or is groaning/moaning or acting "strangely" this is the first thing to try in the way of fixing your problem. Anytime a P/S rack is replaced, a hose is replaced, etc.

1. Ignition Switch OFF
2. Raise Front Wheels Off the Ground.
3. Turn Steering Wheel Fully to the Left.
4. Fill Fluid Reservoir to "FULL COLD" mark and leave the cap off.
5. With assistant checking fluid level and condition, turn steering wheel lock-to-lock at least 20 times. Engine remains OFF. Trapped air may cause fluid to overflow. Thoroughly clean any spilled fluid to allow for leak check later. Keeping fluid level at "FULL COLD".
6. While turning steering wheel, check fluid constantly. For any signs of bubbles, check ALL connections (supply/return hoses, banjo fittings, etc.). If need be, after connections have been checked and remedied, Repeat Step #5.
7. Start Engine. With engine idling, maintain fluid level. Reinstall cap.
8. Return steering wheel to center (tires centered on their line of travel). Lower front wheels to the ground.
9. Keep engine running for at least two minutes.
10. Turn steering wheel lock-to-lock in both directions, slowly.

Verify:
Smooth power assist
Noiseless operation
Proper fluid level
No system leaks
Proper fluid condition, no bubbles, no foam, no discoloration

If any of the above problems exist, check all connections, make sure the correct fluid is being used (no transmission fluid, please). Then make corrections and start at step #1, again. Remember, NO BUBBLES. Entrapped air is the leading problem.

Don't Worry, Be Happy!