The system needs bled properly or damage can occur.
Make sure the engine is off and cool.
Remove the power steering reservoir cap and check the power steering fluid level.
Add as much fluid as needed to fill it up.
Replace the cap.
Locate the power steering bleed valve on the steering box. If you have difficulty finding it,
just follow the high pressure line from the power steering pump to the other end, which
will be in the power steering box.
Push a hose on the end of the bleeding valve. The hose should be long enough to reach
outside the front of the car.
Place a drain pan on the floor in front of the car and place the other end of the hose into
it.
Turn on the engine.
Loosen the bleed valve slightly.
Turn the steering wheel to the right and left as much as you can.
Shut the engine.
Close the bleed valve.
Add power steering fluid to the reservoir until it's full.
Check the fluid that came out into the drain pan. If you notice air bubbles, repeat the
procedure.
You must repeat the procedure until the fluid in the pan is bubble free. When there are
no bubbles in the fluid you know the system is bled.
https://auto.howstuffworks.com/under-the-hood/vehicle-maintenance/how-to-remove-air-
from-power-steering.htm
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