C-4 transmission adaptor, seal? Or leak.

[th3fourn]

Hey guys,

So I assembled my C4 transmission on my 74 bronco. I attached the adaptor and then the transfer case. When it was connected I filled it up with transmission fluid and there is a leak from the rear of the transmission right around where the adapter connects. No leak from the pan, just the rear. I’m wondering if I am missing a seal or something in between the adaptor and C4. I’m looking online and I’m seeing a metal ring that I do not have. Mine didn’t have one when I bought it but I had the transmission rebuilt and confused as to why it’s leaking. Haven’t even ran it yet and there’s a substantial leak.
On this website https://tomsoffroad.com/parts/66-77...REpgkTM5iW2vx8_-PeCg8Ful_aTSEvYRoCrxIQAvD_BwE

I see the metal ring and a seal,I don’t have either of these and wondering if that’s causing the leak. Any help is appreciated

Brett

 

[Timmy390]

The seal you're missing keeps the fluids for the D20 and the C4 in and separated. You need both the seal and the metal ring as well as the O ring pictured in the link. The seal is hard to find local. All the venders sell them.

Tim

 

[th3fourn]

The seal you're missing keeps the fluids for the D20 and the C4 in and separated. You need both the seal and the metal ring as well as the O ring pictured in the link. The seal is hard to find local. All the venders sell them.

Tim

Got it, so weird that when I bought the bronco they didn't have it. Do you know any schematics or pictures of how these are assembled? Im guessing metal ring then seal?

Thanks for the help

Brett

 

[Timmy390]

I assume it goes together like the AA version....Hoping others will chime in.
https://s3.amazonaws.com/cdn.wildho...H/8331 Installation Instructions 08-07-18.pdf

Tim

 

[th3fourn]

So I figured it out, to start off I’m an idiot haha
We didn’t put the gasket in between the transmission and adapter, hence the leak