Bleeding (venting) the power steering pump?

[blairwag]

How?
My test drive this weekend did have one problem: power steering fluid bubbled, foamed, and overflowed from the reservoir, profusely, on the second day of driving. BBB suggests I'm getting air in the system. I need to locate the leak(s), fix, then refill and bleed. However, I can't find the "venting screw".

Where is it? What does it look like? Is it similar to a brake line bleader valve? Is the "Venting hose" that I'm to use anything more than a simple clear plastic tube?  What inner diameter (ID) should the tube be (so I can go buy some)?

Is there also a filter? I thought I read in a post, someone suggesting replacing the power steering fluid filter. Is that true? If so, where the heck is that?


--
~~~~~~~~~~~~~~~~~~~~~~~~~~~
William Blair Wagner: blairwag@earthlink.net
Education is not always knowing the answer,
...but rather knowing where to look for it!
1971 280SL US Automatic
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[Cees Klumper]

The bleed nipple is on top of the steering box, sort of in the middle of it if I remember correctly. A parts book may have a drawing of it. It should be relatively easy to spot. I bled mine a few weeks ago and I believe it was an 11 mm nut. For the venting hose I used a piece of rubber hose that I had left over from replacing my fuel expansion tank lines, so it's "that" diamater (sorry!). If you check my post on the engine rebuild, you will see where I describe what I did, and Joe Alexander I believe commented later that bleeding the system is not really necessary as air will escape by itself.
There is a filter in the oil canister that sits on the left side of the engine, somewhat close to the distributor, with the winged nut. Only, you have to remove the slotted disk that is inside this container to see it. I replaced mine when I bled the system.

Cees Klumper in Amsterdam
'69 white 280 SL automatic

[blairwag]

Thanx, Cees. I'll look again, closer.

--
~~~~~~~~~~~~~~~~~~~~~~~~~~~
William Blair Wagner: blairwag@earthlink.net
Education is not always knowing the answer,
...but rather knowing where to look for it!
1971 280SL US Automatic
~~~~~~~~~~~~~~~~~~~~~~~~~~~