I already checked the vent tube and replaced the O-ring axle seal and I am still getting contamination, could it be coming from the hub assembly? After examining the fluid it smells like grease but cant tell really. also could this be causing my 4 brake lights to come on? I just replaced all 4 rotors and pads and cleaned everything up really good incudling abs sensors and lights stayed off for a week or so until i started getting the contamination again.

 

The contamination is behind the wheel flange on the hub. I am thinking maybe the bearings on the hub are going bad allowing oil to pass them and leak out? So if gear oil is leaking into my hub could that cause faults cauisng all the amigos plus the brake light to come on?

 

And it will mix with brake dust and make a black rubbery compound. Did you clean inside the bango bolt for the vent tube? I had to remove mine from the axle where it attaches the vent tube, and it was packed with mud. See https://landroverforums.com/forum/ge...caliper-42635/

 

There is no bango bolt on mine just a pressed in tube fitting to accept the vent tube. I could try to pry it out I guess.

 

Wouldn't do that. Compressed air into vent line? Squirt in brake cleaner and shop vac out? Piece of weedwhacker line shoved in?

 

Remove the axle breather, becareful because it can break.
Blow through it with your mouth like a straw, if it is clogged you need to clean it out.
Otherwise your hub is bad, and yes, the grease/oil/brake dust can set off the 3 Amigo's.

 

Falso.


The O-Ring you speak of is NOT the cause of gear oil leaks 99.99% of the time - the inner seal within the actual hub assembly/bearing is the problem, and is NOT user serviceable save for elaborate shop equipment and hydraulic presses etc.. and is never worth the PITA experience.

It's also nearly impossible to block a vent tube to the point where it will force gear oil through a bearing seal in the hub assembly - that's not how the vent works and it won't build up pressure in that manner, you're barking up the wrong tree (ask me how I know).

I had a rear caliper exhibit this behavior and would always smell a faint gear oil scent near the rear doors of the vehicle - noticed the inside of the wheel was also smeared with gear oil (dried up.. was obviously leaking very slowly..) - I finally replaced the hub with a rather inexpensive used one / low miles that I found on ebay and haven't had any problems since!!

 

Very useful information here I appreciate it. I will be getting a new hub assembly or low miles one! Were your lights on?

 

Well, I would not say that a vent tube can't be plugged, mine was. And it will create pressure from oil vapor and force oil out in strange places. Mine did. If it did not need a vent, they would not have installed one.