Mystery part on '78 515 diesel

2hot6ft2

Member
I came across this part that just lays on top of the valve cover. There was old grease holding it in place when i bought the tractor.

Looked on messicks for both the 1978 515 and the 1978 4600 but still have not found anything that looks like it. Can anyone ID it?
Thanks in advance.

mvphoto26927.jpg


mvphoto26928.jpg


mvphoto26929.jpg


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(quoted from post at 20:09:50 11/17/18) Looks like an air filter restriction sensor.

Mark
Item 27
Interesting. I looked at that and I think there is one similar to that in a similar location on the intake that's why I figured that wasn't what it is but I've been wrong before.

Wonder why it says "Air Cleaner Restrictor, Except 335, 515"

I was just curious so I'll take your word for it and stop wondering.

Thanks mhb@ufe and RickB
 
(quoted from post at 20:41:46 11/17/18) Perhaps I should have gone to the next page. It still has the same part number though.

Mark
Item 22
No problem. That looks more like the diagram I had looked at for the 515.

Thanks again.
 

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