Removing Secondary Oil Relief Valve

On the side of one case half, there is this bolt/plug which houses a secondary oil pressure relief valve:

Secondary oil relief valve cover on a Porsche 914 engine

 

It is removed with a 14mm triple-square socket. In side is a spring:

Unscrewing the secondary oil relief valve on a Porsche 914 engine

 

And a plunger (which can be removed with a magnet):

Plunger of the secondary oil relief valive on a Porsche 914 engine

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All pictures and text copyright 2008