Axle seals

Its your tires mate or your wheels , Different size tires a wheels will do it all the time .. check em..

Ron, what is the reason why Tyres/wheels cause the problem, is it due to extra heat on the seal.

Yeti, I am assuming that you have the same wheels and tyres all arouind at least the same wheels and tyres on the back with the same tread wear. I use Nulon on my diffs have you tried that. Are you over filling the diff? Have you used an infra Red Temperature checker to check the wheel/bearing/brake temp. Jaycar sell them for about $40.

If Rons idea does not work out and you have tried all else I would replace the diff ( assuming your rear end has not been involved in an accident and its out of line) next step is to get rid of the vehicle. Also assuming its the seals adjacent to the wheels and not the pinion seal.

My Cruiser is an old friend we have been thru so much together, it would be like putting down my wife's dog to sell it off. After failing every 20k's its not reliable and thats a 4Be must.

Peter

Is it the LH side? if so then the diff housing is probably bent, not an uncommon problem unfortunately.
If it is the RHS then the diff housing could still be bent but as the RHS is shorter and hence a bit stiffer it isn't as common.
It might also be a bent drive axle but the housing is more likely to bend than the actual axle.

I just replaced my front diff housing last firday as it was bent. My axle seal on the long side was blowing every 1000km. Bought a good housing from Gold Coast 4wd wreckers for $385 and about $40 for courier to Bundaberg. Easier to do rears than front but easy enough to do front in a day with new axle seals and do wheel bearing and seald as well while apart. Queensland cruisers want $660 for a housing + freight SHOP AROUND.

Mine was bent by 2º on one side and 1.5º on the other.
Cheers
Dave

Yeti,
I spoke to a friend who runs a big mechanical workshop and his comment was similar to the above either the axle is bent or the diff housing.

Peter

Hi Yeti,

I agree with the others about a bent diff housing. I had exactly the same issue with the front of my GU patrol and an axle specialist managed to bend it back to the correct position (cost about $900). It seems that the damage may have been done a couple of years ago when the car hit a washout hard on Fraser Island. I had been having wheel alignment and blown axle seal problems since then. Most tyre guys would not pick the issue. Good luck.

Regards,
Al