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  #16 (permalink)  
Old 08-23-2011, 07:55 PM
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If it's not returning to the pump, where is it going? With the engine not running, the pump is full, the steering box is full, and the hoses are full. When you start it, the pump pushes fluid into the hose, which pushes fluid into the steering box, which pushes fluid into the return line, and back to the pump. It's still only full, there is no where the fluid can go. As you turn the wheels, the chamber on one side of the box gets bigger, while the other side gets smaller, so it still holds the same amount of fluid.

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Old 08-25-2011, 04:26 PM
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just got off the phone with PS tech who told me I needed to vacuum bleed reservoir for 20 minutes with a external vacuum source? can some one explain a simple way to do this ? with at least 17 psi ?
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Old 08-25-2011, 04:57 PM
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power steering bleed.

The way we do it on our vehicles is this an although being messy it works. You will need to put the vented cap back on the reservoir.Fill the power steering fluid leaving about an inch and 1/2 from top . Crank it up get your engines rpm up a little turn the wheel all the way to the left then all the way to the right.Do this a couple of times,then shut down. It would be a good idea to lay a rag or towel over the pump and a drain pan underneath.Let it sit for about 20 minutes ,check fliud level,add alittle if low. Do the process again then let it sit for about 30 minites. Check the fluid and add to mark. Always leave room for expansion on any pump. By the time you get the mess cleaned up the fluid in the system should be clear of foam. Just be sure you are using power steering fluid (NOT TRANSMISSION FLUID) in the system. Hope this helps. I do this on alot of big trucks that have much larger capacity systems than your and it works good. As far as your P.S. tech ask him to send you a picture of a power steering vacumn pump. Never seen one.
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