I have a progressively worsening rattle which I think I have located to be the power steering pump. I picked up a pump this morning and am going to change it out.

Question: after I have changed the pump, what is the process to bleed the system???

 

I know it's years old but I'm posting this in case someone else ends up here looking for a procedure.


Bleeding Procedure:
After installing the steering rack in the vehicle, continue with the following additional steps:

1. Connect all fluid and mounting hardware, but do not attach tie rod ends. Top up fluid level in p/s reservoir and maintain throughout the bleeding procedure. Do not start engine at this point.
2. With engine off, purge system of air by turning steering wheel full left to full right at relatively low speed until air bubbles do notappear in the reservoir.
3. Turn wheel to full lock, for instance full right, and hold in this position until air bubbles stop appearing in the reservoir. Be patient. This can take up to five minutes. Turn wheel to full opposite lock, full left in this case, and let air bubble out as above.
4. Remove fuel pump fuse to prevent the engine from starting. Crank engine and turn steering wheel simultaneously full left to full right slowly until bubbles stop appearing in reservoir. Note: Do not crank engine for more than 30 seconds at a time.
5. Install fuel pump fuse, start engine and let idle. Turn steering full left to right slowly until air bubbles stop appearing in the reservoir. If the steering continues to pulse or vibrate, continue bleeding by rotating the steering wheel full left to right until vibrations diminish.
6. Reconnect tie rod ends and adjust toe-in to specifications. Check for leaks and proper fluid level.

Note: If the system is filled too quickly, the fluid can be prone to retaining air. Once this occurs, it can take one to two days of normal driving before the air is released from the system. In bad cases, you can install a schrader valve, without the valve core, into an old reservoir cap and use a Mityvac to purge air through vacuum.