[W126 Coupe] tranny fluid leak?

[Josh Allen]

Gary wrote:

> i've got a tranny leak and a while back a guy told me it was the pinon 

> seal something?   can anyone shed some light on pinon seal.   how much 

> is it to repair.  the mileage is 230K an 88 560 sec.  probably should 

> think about getting another sec if the repair is to much or if i need 

> another tranny.  

>

If you are talking about the output shaft seal, it shouldn't be all that 
expensive, but it does take a special socket to take off the flex disk 
coupling on the output shaft.

If your flex disks and carrier bearing haven't been replaced recently, 
it'd be easy to do them while there, as they would likely already be 
disconnected from the car to allow space to do the transmission output 
shaft seal.


All that being said, the only pinion shaft seal that I know of by that 
name is the front seal on the differential.  I'm not sure just how much 
of a pain it's going to be, but I'm about to do mine, since two of the 
three diff seals are leaking on my car.

Best of luck, and many more miles!
-Josh