'75 4000 Diesel - mystery part

Dchilds

Member

cvphoto4373.jpg


Can anyone tell me the name of the part I'm holding? It's part (I think) of the return line assembly. It is a 3-way connection of the fuel lines and should bolt up to the plate that the voltage regulator is screwed to. My voltage regulator is off, though.

All the help is appreciated!
 
The part number is C5NN9N425B, and it looks like they are still available from New Holland. partspring.com claims to have them in stock, but sit down... they want $164.00 for one.

They changed the design at one point and removed the reservoir as they discovered that a simple Tee fitting will suffice.
 
They used those from 1965-75.
On the 1976 models they discontinued them and just used a T in the line.
I assume it's because there is enough fuel in the line itself to adequately supply the thermostart.
I wouldn't bother replacing it. Just use a T.
 
(quoted from post at 12:58:48 05/11/20) They used those from 1965-75.
On the 1976 models they discontinued them and just used a T in the line.
I assume it's because there is enough fuel in the line itself to adequately supply the thermostart.
I wouldn't bother replacing it. Just use a T.

So glad you chimed in!

Thanks, everyone, for the quick responses. What a great forum.
 

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