Oil Pressure Relief Valve?

Stephen Hill said:

This is an older thread. But it is the most recent and relevant one I could find.

I noticed my factory parts books call for 5 shims (part no. 06.7646) to be used in the oil pressure release valve. Yet Andover norton suggests you only need 2. Although they hedge their bets by saying check the number required. Perhaps the "new" springs from Andover have a different tension, or the body or the shims are machined differently.
Testing with a pressure gauge seems to be a very good idea.

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Dan1950 said:

I'm going to have time to investigate my oil pressure loss problem.

Thread 'Good Thing I Have an Oil Pressure Gauge!' https://www.accessnorton.com/NortonCommando/good-thing-i-have-an-oil-pressure-gauge.37683/

All indications point to it being something to do with the components involved with the AMR anti-wet sump mod, be it improper assembly on my part or something to do with the modifications done by AMR.

I learned long ago to investigate the simplest, easiest to correct factor first so the OPRV seems to be the best place to start.

I'm familiar with how an OPRV works, but have never had the one on my Commando MKII apart. Since it was modified by AMR I want to check that it was assembled and shimmed properly.

Does anyone have a drawing of how the components should be assembled.

What us the best way to establish proper shimming?

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Stephen Hill said:

I noticed my factory parts books call for 5 shims (part no. 06.7646) to be used in the oil pressure release valve.

Click to expand...