M1083 oil pressure indication

[NTXb90]

I’m currently trying to diagnose a 1083 with no oil pressure indication in cab. It will start and run so there is oil pressure but im tryin to isolate between gauge and sender. Im unable to find any diagrams or anything so I don’t know what readings I should get on gauge plug. Any guidance would be welcomed. Haven’t had much luck in the manuals I could find

 

[fuzzytoaster]

Is it an A0 or A1 truck? If an A0 truck with the 3116 the oil pressure sending unit is on the driver side of the cab below the fuel filter. They can fail. I replaced one today that would peg out past 80 psi on start.

 

[NTXb90]

Is it an A0 or A1 truck? If an A0 truck with the 3116 the oil pressure sending unit is on the driver side of the cab below the fuel filter. They can fail. I replaced one today that would peg out past 80 psi on start.

It’s an A1 with 3126.