Soldered Lead on Oil Pressure Sensor?

[HoveringHMMWV]

Removed from my 2007 M1151A1. Any ideas what the small soldered-looking lead was for? The oil pressure sensor has Steward Warner stamped into the metal on it.

 

[Dieselmeister]

Could be a small tube they use to purge/gas fill the sensor, then cap it off. Try unsoldering the cap like end piece.

 

[Mogman]

Could be a small tube they use to purge/gas fill the sensor, then cap it off. Try unsoldering the cap like end piece.

Only if it is no good, un-soldering it will compromise its hermetic seal.

 

[Milcommoguy]

AND... Likely let in a gremlin, CAMO

 

[Coug]

If it ain't broke, fix it til it is.

 

[Guyfang]

The stem is not for pressurizing it. I read someplace what its there for, but can not for the life of me remember.

 

[Dieselmeister]

but can not for the life of me remember

That's why it MUST be disassembled, so we can all know. Curious minds want to know....

 

[Dieselmeister]

That's why it MUST be disassembled, so we can all know. Curious minds want to know....

Well, my curiosity got to me, and I did some further research. One of the NSN documents I found says it is a pressure output port, but not for what purpose. Possibly for a capillary to an actual pressure gage? The doc states "sensor shall have one pressure input connection, one electrical connection, and in some cases a pressure outlet connection".

 

[Guyfang]

I seem to remember, when one day I was bored, reading some of the M113 Family TM's. Yeah, that's bored. There was someplace in the -34 TM (?) something about one of the two switches to be used had a extra "Nipple", and one didnt. But the who, what and why I have long forgotten.

 

[williamh]

That’s for when it’s getting “made” they can verify the pressure is correct. Than it’s pinched off and sealed