View single post by Esprit2
 Posted: 06-15-2017 12:28 am
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Joined: 05-01-2005
Location: Minneapolis, Minnesota USA
Posts: 341
Here are the pressure relief valve's internal parts laid out. It's not my photo, but I don't recall where I got it. These parts are typical of the Lotus and Mk II JH oil pumps, while the Mk I JH has a different piston config. Look past the details, and both versions work basically the same way.

Tim Engel

Attachment: 9XX Lubrication - Oil Pressure Regulator 06.jpg (Downloaded 33 times)

Last edited on 06-15-2017 08:58 pm by Esprit2