I was doing a brake job and came across this!! Now what? New seal? Failed bearings? Just clean it up??
Thanks

 

Clean it up and see if you can see where it's coming from. Could just be o-ring on the bearing hub assembly. Could be the bearing.

 

Check your gear oil level, if it is low, it could be the o-ring if not low it could be the inner seal on your hub and you will need to replace it.

 

Most of the time its the hub, which has to be replaced as a unit. You might get lucky and it might be the o ring but I doubt it. Mine looked just like that and it was the hub.
Land Rover Hub Assembly W/ ABS Sensor (Rear) (Same Fit As Genuine Part # TAY100050)

 

the right rear went on mine 15 month's ago. we just replaced the outer seal and haven't had any more problems.

 

For the sake of saving money I would obviously like to try the O-ring or outer seal first before buying a new hub.. Is the o-ring an easy fix? I am very well skilled in fixing trucks so I have no problem doing things myself.. I assume putting my new brake set-up on with gear oil everywhere is a bad idea...

Also checking gear oil level.. is there an eye-hole? how do I check it on the Disco??
Thanks a ton guys

 

see attached from RAVE shop manual, which you need to download for light reading of "Brit Lit".

Also, in case it has not been mentioned, there is a vent line from the axle that runs from a banjo bolt up to a "shepherd crook" vent. Ths allows oil vapor to escape when it evaporates. If plugged with mud chiggerz, it can build up a slight pressure and vent axle oil thru the hub seals. So be sure to remove the banjo bolt and clean it and blow out the line.

 

I had same problem. Replaced O-Ring and did not solve the problem. Purchased 2nd hand Hub. But before I replaced it I put some White Shepherd/Blue Devil in the differential after replacing the gear oil with 85w-140w. It cured the leak. But I still have the HUB if needed in the future.

 

As for replacing the gear oil, I was going to go with the 85-w140. But for the grease? is the dif oil the same as the grease I'm getting at the hub? Which grease to I use for the hub? Is it the heavy gunk grease??
Thanks again as always

 

If it is diff oil, it mixes with brake dust to make a rubbery gunk.