Please help identify sensor

[ageless]

Miraculously, I have 2 sensors (opposing engines) that have both started leaking (oil). Only one has a label on it and the P/N returns no results. 12v71 engines, sensor is the one the arrow points to. Any idea what they operate? They both leak oil out of a small hole in the sensor

 

[ageless]

they look like this but only have (2) connections

 

[SKYCHENEY]

oil pressure switch. Standard part. You can get one at napa

 

[Captain Ralph]

There may be two pressure bars like this on your engine.
One for oil pressure an the other for fuel pressure.
I'm guessing you are leaking from your Nason Oil pressure alarm switches.
Your ships prints will offer the pressure spec.

 

[ageless]

disregard

 

[SKYCHENEY]

disregard

Oil coming from somewhere else?

 

[ageless]

Oil coming from somewhere else?

I'm going back Monday but the flow is concentrated to that sensor.


I really need to get this vessel hauled out so I can replace the trim tab actuators and get this Onan out. Does anyone see issue(other than the obvious what if's) with plugging these off to go a mile to get on the hard? I'd imagine if it's a sensor that sends an alarm to the bridge, I could figure out what it goes to. GENIUS!!!!

 

[ageless]

oil pressure switch. Standard part. You can get one at napa

I believe my oil pressure switch is what is circled

 

[ageless]

There may be two pressure bars like this on your engine.
One for oil pressure an the other for fuel pressure.
I'm guessing you are leaking from your Nason Oil pressure alarm switches.
Your ships prints will offer the pressure spec.

Capt Ralph, each engine does have the "bar set up" pictured. They're mounted above the gears. Nason looks like a place to start, I don't see a pressure switch they offer like mine though. Thank you for the lead

 

[Captain Ralph]

Original Nason, Hobbs and others offered NO and NC switches (normally open, normally closed) with two connections.
For near the same cost, they made a combo switch that does the NO & NC in one unit with three connects on top.
It is the pressure spec that may be critical here. This data will be in your prints if not readable from the decal falling off that switch in your picture.

You can remove the sender and plug it if the leak is that bad.
If the alarm sounds, connect the wires together to stop the false alarm.