Power Steering Bleeding: Service and Repair

Bleeding

1. NOTE: When filling or topping up the reservoir, make sure that the fluid is clean and not agitated prior to use. The fluid should be poured slowly into the reservoir to minimize the possibility of aeration.





Fill up the power steering reservoir to the MAX mark.

2. NOTE: When bleeding the system make sure that the fluid in the reservoir does not fall below the MIN mark, as air may enter the system.

Start the engine and slowly turn the steering wheel from stop-to-stop.
^ Examine the hose connections, steering gear boots and valve body for external leaks.
3. Switch off the engine and check the fluid level. Fill up the power steering reservoir to the MAX mark as necessary.
4. Check the system for leaks.





5. Using the special tool, apply a vacuum of 51 kPa (15 in Hg) to the power steering reservoir.

6. NOTE: When bleeding the system the vacuum will decrease, maintain a sufficient vacuum of 51 kPa (15 inch Hg) using the vacuum pump. If the vacuum decreases by more than 7 kPa (2 inch Hg) in five minutes the system should be checked for leaks.

Bleed the system.
^ Start the engine and slowly turn the steering wheel to the right, just off the stop.
^ Turn the engine off and apply a vacuum of 51 kPa (15 inch Hg) using the vacuum pump, maintain the vacuum until the air is purged from the system (minimum of five minutes).
^ Release the vacuum at the vacuum pump.
^ Repeat the bleed procedure, turning the steering wheel to the left, just off the stop.
7. Remove the vacuum pump and stopper and fill the power steering reservoir as necessary.
8. Start the engine, turn the steering wheel from stop-to-stop. If excessive noise is apparent repeat the bleed procedure.
9. If the noise level is still unacceptable, leave the vehicle standing overnight then repeat the bleed procedure.