Help with wheel bearing

2004 Murcielago e-gear

I was driving to Lime Rock Park for a Miller Motors event, Azurro Pagani. Went through several construction sites on Mass Turnpike. Hit a bump and thought I loosened a panel. There was so much noise from right rear wheel well.

There was grease everywhere. I thought it was road tar from construction. As I stripped down the wheel hub, it was grease from the wheel bearing. The rubber hood has split and the drive shaft with wheel bearing separated from wheel hub.

I was going to buy a new rubber hood and re-pack the wheel bearing.

 

Not having a lot of experience with this, am I missing anything? Should I just bring it to Boston Lamborghini for repairs?

 

TIA,

Charlie

 

These are the beauties at Lime Rock.

It’s a CV joint similar to any other car. You can find a local specialist to refurb your axles. If you take it to Lambo, they’ll either send it out to the same type of shop and mark it up crazy amounts or charge you crazy money to replace the entire axle needlessly with a new OEM part. 
 

We are all getting to the age where these CV boots will start failing. They do on all cars after a certain amount of time. You might want to check what the Diablo folks are doing since they are ahead of us on aging out their rubber parts.

Thanks for the advice. Do you need a special tool to remove the star-shaped nut to get the wheel bearing off ? Can't get a socket on it.

Are you sure the wheel bearing is bad? All I see bad there is a broken CV joint boot that expelled all the CV grease making a mess. It is possible the wheel bearing is totally ok? You can confirm this by re-installing the wheel and checking for axial play. It is worth doing this because you may do a lot of work and spend money that is not needed. 

The bearing may be okay. Trying to figure out how the 6 bolts backed out. The hub and bearings completely separated. The bolts are nowhere to be seen. Trying to figure the hex socket screw sizes.

From reading your answers I'm getting the feeling that you are referring to the constant velocity (CV) joint as being the wheel bearing when in fact they are two totally different things. The images show the CV joint (NOT the wheel bearing) as being compromised and exposed. Politely I would say that if you are struggling with these distinctions then you may want to transport the car to qualified mechanic and have them perform the diagnostics and repair. 

I think your axial bolts backed out. I have seen then come loose from time to time. You should be able turn the hub, if bearing is bad you will feel it and it will have play. You don't seem to have a lot of experience with a repair like this maybe best to send it to some one that does.  I agree looks like split CV boot. May just need new boot and bolts. The flange holes on inside look like they are oblong from bolt coming loose. May need new flange also. I would want to see it after cleaned up to make that call. The bearing is mounted inside the upright with the hub going to the flange. The part with the grease is the CV joint and you don't use a socket to take it apart.

This is why best have cars serviced by some one that knows what to look out for & inspects the car each time it gets the oil changed every year to avoid costly repairs and possible unsafe situations that could result in a accident. This could have been worse and avoided.

Thanks for the help. Removed the clip and borrowed joint puller. Got the CV joint off. Going to clean it up and reuse. Have new boot and bolts on order.

I am using this car to learn the repairs rather then my more mission-critical vehicles. I don’t depend on the Murcielago for transportation. Doing my own repairs on it makes me love it more.

To finish up, I bought the CV - Joint Boot w/Shield from Bullstuff. Nice kit, came with clip, retainer, and 2 tubes of VW cv joint grease.

The 6 bolts are hexagon cap socket screws M12-1.25. I bought 50 mm length which were about 2 mm longer than stock.

The bull is back in action.

On 6/12/2021 at 2:13 PM, chucklehead said:

I am using this car to learn the repairs rather then my more mission-critical vehicles. I don’t depend on the Murcielago for transportation. Doing my own repairs on it makes me love it more.

That's awesome. Good way of planning too! 

Thx