Power Steering System Purging

POWER STEERING SYSTEM PURGING

Caution:
^ If the air Is not purged from the power steering system correctly, premature power steering pump failure could result. This condition can occur on pre-delivery vehicles with evidence of aerated fluid or on vehicles that have had steering component repairs.

Note:
^ CII reservoir shown, CIII reservoir similar.

Note:
^ A whine heard from the power steering pump may be caused by air in the system. The power steering purge procedure must be performed prior to any component repair for which power steering noise complaints are accompanied by evidence of aerated fluid.

1. Remove the reservoir cap. Check the fluid.
2. Raise the front wheels off the floor.
3. Tightly insert the stopper of the vacuum pump into the reservoir.
4. Start the engine.





5. Install the vacuum pump, apply maximum vacuum and maintain the maximum vacuum of 68 - 85 kPa (20 - 25 in Hg).

Caution:
^ Do not hold the steering wheel against the stops for more than three to five seconds at a time. Damage to the power steering pump could occur.

6. Cycle the steering wheel fully from stop to stop 10 times.
7. Stop the engine.
8. Release the vacuum and remove the vacuum pump.

Caution:
^ Do not overfill the reservoir.

9. Fill the reservoir.
^ Use approved transmission fluid.
10. Start the engine.
11. Install the vacuum pump, apply maximum vacuum and maintain the maximum vacuum of 68 - 85 kPa (20 - 25 in Hg).

Caution:
^ Do not hold the steering wheel against the stops for more than three to five seconds at a time. Damage to the power steering pump could occur.

12. Cycle the steering wheel fully from stop to stop 10 times.
13. Stop the engine, release the vacuum, and remove the vacuum pump.

Caution:
^ Do not overfill the reservoir.

14. Fill the reservoir as needed and install the reservoir cap.
15. Visually inspect the power steering system for leaks.

Caution:
^ Do not overfill the reservoir.

16. Fill the reservoir as needed and visually inspect the power steering system for leaks.
17. Install the reservoir cap.