Hey so I have a 93 XJ6 and I put in a whole hub assembly off of a 94. I can get the other hubs off no problem but the new one I put in won’t come off and has a screw on it. The others don’t have this screw. I’m sure it’s going to be seized bad so does anybody have any suggestions or know the purpose of this screw?

 

Hi Benkitties,

The screw just holds the rotor on the hub as the car is assembled in the factory and is not necessary at all. If it is seized, you may need to drill the head of the screw with about a 1/4 inch / 6 mm bit. The screw head is of the counter-sunk type with a flat head top and tapered or conical underside. Once you drill through the head, it will come off, usually climbing up the bit. The threaded shaft will be left in the hub, but there is no need to drill it out. Just file down any sharp edges once you get the rotor off so you or some future mechanic do not slice your fingers on it.

Cheers,

Don

 

Hey so I have a 93 XJ6 and I put in a whole hub assembly off of a 94. I can get the other hubs off no problem but the new one I put in won’t come off and has a screw on it. The others don’t have this screw. I’m sure it’s going to be seized bad so does anybody have any suggestions or know the purpose of this screw?

 

Hey Don thanks for the response. Since you know so much I was hoping I could get your opinion. So the problem started off as a bad wheel bearing so I bought a whole hub assembly including the axle shaft. I put it in and it started making some serious noise on both side of the rear end. It will spin for a while but eventually the side I replaced will get so that it stops moving while the other side spins. And the differential is definitely making noise when it starts to slow down and stop moving. Now my main concern is whether the differential is damaged or not. I’m thinking maybe the reason it’s slowing down and binding till it seizes is maybe the parking brakes are stuck in place, because when I took the other disk cover off the noise was no longer there on that side. I bought this car with the bearing being bad and the hub carrier damaged so I had to get the whole assembly and I never drove it so I can’t say. Do you think the differential is damaged? How would you tackle this situation?

 

Hi Benkitties,

My first suspect might be one of the U-joints on the axle you installed, so it would be worth checking those carefully for any play or binding.

You can check the parking brakes by disconnecting the slip union in the cable that crosses from rear wheel to rear wheel. I think I recall that the union is a little to the right of the driveshaft. Clean away any gunk or grit then push the cable toward the center of the union to release the cable end. Now you can check each rear wheel to see if the parking brake mechanism is binding:




Cheers,

Don