Transmission Fluid Leak

[texasmike]

I have a small transmission fluid leak (red oil). I have not crawled under the truck to confirm the source but do know it's not from the tail shaft seal. It has been suggested that it's most likely from the speedometer cable connection and is common with these older trucks. Has anyone dealt with this issue and what is the fix?
Thanks guys and gals.

 

[PrairieDrifter]

I believe they just have o-rings.

 

[Camar068]

Start it up and get it warm, check fluid and add as needed. Shut it off then get under there with some rags and wipe it down really good to remove any evidence of fluid. While it's off look for leaks after that.

If no leaks found, fire it up and get under there again looking for fluid. If your losing a lot, you'll find it quickly while it's running.

Don't forget to check your lines/fittings at each end.

A big piece of cardboard on the ground helps narrow down the location as well.