Leaking from Driveshaft

[THenning]

So I had my upper apart to fix a failed pressure test. Replaced both seals on the driven gear and the O rings around the drive shaft...Still have a leak from the center of the drive shaft, behind where the U joints are...are there any seals in there to be replaced?

 

[Bt Doctur]

just the main carrier seal , could also be a grooved yoke.

 

[achris]

Requires you pull the bearing pack and drive gear out (special tool required) and disassemble the assembly to replace the seal and either replace the yoke or speedi-sleeve it (there is a third, unpublished option. Set the seal 40thou deeper in the seal carrier and have it ride on a previously unused section of the yoke)....

Get the service manual (genuine only) and read up on the procedure several times before you attempt the job. Also, have a look at this, Bearing pre-load, so you know what's involved with setting it all back up.

Chris......