Hi all.
Is it possible to lubricate the front hub bearings by injecting grease into the hole left when the speed sensor is pulled ?
Has someone done it , perhaps with a fat syringe ?
The service manual drawing shows it is the same cavity where grease is held.
Thanks.

 

I suppose you could, although I'm not sure how you would properly distribute it throughout the bearing.

 

No you can't the entire hub has to be replaced as it is a sealed unit.

 

I haven't worked on the Disco hubs yet, but the ABS tone ring is part of the inner race. Isn't the grease for the bearing distributed throughout it? The seals are only on the outside so there shoud be grease where the ABS sensor is, correct? If not, maybe someone who has replaced an ABS sensor or dug into these hubs a little can let me know how they are built. They sure look a little overdesigned. My P38 had a hub bearing with the ABS sensor reading a tone ring on the CV joint. Seemed like a little more economical design since it could utrilize a standard bearing.

Regardless, I doubt adding grease will extend the life of the bearing but it looks like it can be done.

 

It would spread as you drive.

Ext-go for it and let us know what you find out.

 

I had a spare hub kicking around so I gave this a try. I pulled the end off my grease gun and just pressed the fitting against the o-ring in the sensor hole. Pumped it full of grease while rotating the hub. It took the grease fine and pushed a little bit of the old grease out around the circumference of the seal. I did this to both my rear hubs as one had been leaking a tiny bit of diff oil and had started to make a little noise when turning. There was no play that I could detect in the hub and now with the addition of the grease I have no more noise.

Seems like a viable method to prolong hub life especially if diff oil had been making it's way past the seal and diluting the grease.

 

Thanks. All aims that is a true valid possibility. Time to buy a horse syringe.

 

A short term for maybe a week or more, trust me, you can't cut corners with these hubs.

 

Thanks, Disco Mike.

I do not see it as cutting corners, it is about preventing failure with lubrication.

I do not understand your post.
Would a daily working hub, whatever its age, wear or amount of grease in it, last "maybe a week or more" if grease is added ?

 

Once these start to leak, be it whatever old grease or new grease, it will continue to leak, get on your brakes and then at some point the bearings will fail, you will need new brake pads and it isn't worth all the effort.