Are the air cleaner and power steering "Star" nuts identical

[Lee Craner]

Are there any differences between these two star nuts?

[Egenolf]

Here the informations of the authenticity manual:

The air cleaner has always a chromed star nut.

The power steering reservoir has either a chromed star nut like the air cleaner or a black square nut or a wing nut (Cadmium).

[Lee Craner]

Thanks, Holger.

Lee

[Pat Marshall]

All star nuts are the same.

[Egenolf]

Here is an excerpt from the authenticity manual and a picture of the power steering reservoir nut of 2503 (red circle):

https://up.picr.de/43330426sl.jpeg

https://up.picr.de/43330428ml.jpeg

[Pat Marshall]

The Eaton Power Steering Pump is also acceptable for the Mark II - "Although it is generally accepted that only the Vickers brand power steering pump was supplied as original equipment on the Mark II, the Eaton pump may have been installed at the factory on early models. Either product is acceptable for LCOC judging without point deduction or penalty"

The Eaton pump does not have a star, a wing nut or a square nut, it has a screw cap.

[Lee Craner]

Thanks, all for taking the time to respond. My original question was spurned by the depth of the center of power steering lid (see Holger's photo). Seems to me that the star nut would instantly wear off the paint surrounding the center hole.

[rhschnauss]

I have that pump on my car and it likes to blow the fluid out of the top. Why would it do that? I am constantly filling the reservoir and the fluid always has bubbles in it.

[Knickoliss Iv]

Roy have you tried bleeding out the system? I would raise the front wheels so there is no load then slowly turn the steering stop to stop several times. You have no other small leaks that could draw in air?

[Graham Rollo]

should have a special washer under star nut that also acts as breather

[Lee Craner]

Graham, do you have a photo of that washer?

[Graham Rollo]

2594725948259492595025951 There is a small hole in the middle of lid & along with the washer that has a groove cut that allows air out. you can get a washer & use a hacksaw to cut a groove in it, regards Graham, New Zealand

[Barry Wolk]

Why the small hole? There's plenty of space in the lid clearance hole to relieve air pressure. I don't think I've ever seen sufficient fluid in mine to need a drain hole. I don't think it would help, but I guess it wouldn't hurt.

I made my cut washer out of stainless so I didn't have to break a plated surface.

[Graham Rollo]

Thought the small hole was factory.

[cparkerk]

Mine not only has the small hole, too, but there also is a plastic socket. That comes first, then the washer (grooves facing down towards the plastic socket), then the nut. Apparently avoids scratching the reservoir lid.

https://up.picr.de/43370674yx.jpg

[Lee Craner]

Now this all makes sense. Thank you Graham and Konrad for posting the pictures.