GU leaking hub seal is driving me nuts!!

I'm an ex-mechanic and used to see this on landcruisers from time to time.
Has the axle seal inside the housing been replaced?
From memory this system has an oil seal separating the diff oil & the grease in the ball hub & CV joint.
regards
michael.

Hi there,
The other two replies are spot on. These hubs should have high melting point lithium grease in them and this will not leak out. Inside the diff housing there is oil. This oil should be kept away from the inside of the swivel hub by an oil seal inside the end of the axle housing. It is a relatively small seal and can fail, if it does, the diff oil will mix with the swivel hub grease and leak past the seal because it was never designed to be oil tight, only grease tight. No matter how many times you replace the hub seals, if you don't replace the inner oil seal, you are wasting your time. I would wonder if the seal really was replaced, often a mechanic will simply tighten the bolts around the seal, hoping this will fix the problem :)

Thanks Guys

I will be sure to talk to Nissan about this when it goes in

Cheers

Check your diff breather. It may be blocked or faulty and this will cause excess pressure buildup in the diff and could be causing that seal to leak oil into the swivel housing

Hi there,
I had another idea about why you are getting this leak. Has the vehicle ever had a big hit on the front axle or got airborne and had a heavy landing - if so the front axle housing could be bent slightly, putting the axle off centre, causing the leak.