MF 50 Oil Pressure Sensor Location

[Mentone22]

I have a MF 50 that didn't have an oil pressure gauge on it when I got it and I can't figure out where the sensor screws in.
The only threaded hole I see near the oil filter has a bolt in it so I'm not sure if that could be it or not.
I put a red arrow where that bolt is screwed in.
Does anybody know exactly where the sensor goes on this Continental?

 

[Jim.ME]

The MF 50 originally used a mechanical oil gauge with a tube (not a sensor) that ran from the port your read arrow points at. You can install a sensor there if you want to install and electric powered oil gauge, Or run a tube from there to a mechanical oil gauge. I expect those are pipe fittings in the port, not a bolt. If I remember right that port in the block is 1/8" NPT.

 

[Mentone22]

The MF 50 originally used a mechanical oil gauge with a tube (not a sensor) that ran from the port your read arrow points at. You can install a sensor there if you want to install and electric powered oil gauge, Or run a tube from there to a mechanical oil gauge. I expect those are pipe fittings in the port, not a bolt. If I remember right that port in the block is 1/8" NPT.

Thanks. I would have assumed that location had to be it except that having a threaded bolt in there seemed weird.
I never saw an oil pressure fitting that was bolt threads.
I have an electrical gauge and a mechanical gauge but the electrical one would require an elbow to get it away from the wall enough to screw in.

This is the bolt that was screwed in that spot.

 

[Mentone22]

This is why my electrical sensor won't screw into that hole without some sort of elbow to get it away from that housing.
The mechanical one will work assuming the threads will work.

 

[Jim.ME]

If that was threaded into the block they may have damaged the block. The hole in the block is supposed to be 1/8" NPT.

 

[Mentone22]

If that was threaded into the block they may have damaged the block. The hole in the block is supposed to be 1/8" NPT.

That's what I was thinking. There doesn't seem to be any obvious signs of cross threading or damage like I would expect so I guess I'll get a pipe fitting and see what happens.

 

[Jim.ME]

This is why my electrical sensor won't screw into that hole without some sort of elbow to get it away from that housing.
The mechanical one will work assuming the threads will work.
View attachment 129467

A 45-degree fitting might work rather than a 90.

I don't know if you can save the threads if you run a 1/8 NPT tap into the hole. I would grease the tap flutes to catch anything it cuts. Then crank the engine over with the hole open and let it push some oil out to flush the area.

 

[Mentone22]

A 45-degree fitting might work rather than a 90.

I don't know if you can save the threads if you run a 1/8 NPT tap into the hole. I would grease the tap flutes to catch anything it cuts. Then crank the engine over with the hole open and let it push some oil out to flush the area.

Thanks. I was thinking about trying to vacuum out any thread shavings if I have to go that route but grease might work better.
I screwed an old fitting I had in the tool box into the hole and it seemed to work okay but that fitting is bad on the other end so the oil line won't screw on it. If I get a new fitting it may work.

 

[Tim in New York]

Somewhat unrelated to your question, but be careful if you end up installing a set up with a plastic line to the gauge. My IH had one of those that went bad. If I had not needed to get off the tractor and go back into the shed I would not have noticed the oil trail on the ground and probably drained the crankcase and ruined the engine.

 

[Mentone22]

I ended up running a tap into the block and installing a 45 degree fitting and an electric sensor.
It all worked great.
Thanks for the suggestions.

 

[Jim.ME]

Glad you got it fixed. thanks for the follow up.