Differential Leaks at U Joints

[sccruzean]

I have a 1990 F250 4wd that has a 460. It seems as though my differential is dripping oil where the ujoints go into it.

Does anyone know what may be causing this and how to fix it?

Thanks,

Chris

 

[Fellro]

Pinion seal is likely the culprit.You have to take the drive shaft off, then the yoke, and then you can get at the seal.

 

[LEB Ben]

It's the $2 parts that cause the most work...haha. I'm with Roger.

 

[1985 Ford F-150]

Also be sure and put sealant either on the threads of the nut or on the flat part so it dont leak out there.

 

[Fellro]

Shouldn't leak there really, no pressure there. Not impossible, but not as likely.

 

[1985 Ford F-150]

Read it somewhere that its a problem on sterlings oil rides on the splines and leaks out by the nut.