Hi all!

I was wondering if one or a few of you could help me out.... the other day I noticed that there was a whine type noise coming during acceleration between 60 and 120 km/h while driving I figured it to be my differential so when I parked my car I noticed that it appeared to have been leaking. I had my diff oil filled up which took over 1L to fill upon further inspection it appears the left output seal is toast.

Now I know I can get a seal kit but what worries me is the whine...

I've looked into it and it seems you can't get any of the individual components from Jag around where I live so I can't simply replace a bearing etc. Apparently you have to buy the entire differential assembly...

Compounding this issue is a tsb about the differential wherein there was a design change that requires not only the differential but also a new drive shaft... Yikes expensive!!

So my question is this... do any of you know of a way where I can get these components for the differential or do you think my problem may be fixed with the new seals and a top up. I know usually when you start hearing the whine it's usually too late and a bearing or a gear might be toast or scuffed.

Any help would be awesome thanks!

 

Are you not able to fill the diff quick enough to manage to go for a test drive?

The whine is definitely the diff and not the wheel bearing ?

I reckon inside the diff will just be generic bearings made up of over the counter bearings..

 

Thanks for the quick response! I did get a chance to top up the oil and test it out. Sound is still there. I suspect that the leak is so bad it's not retaining the oil. I took it to the shop today they're going to try replacing the seals. If that's a no go then I might have to dig a bit deeper. Hopefully off the shelf bearings are compatible /available. As far as a wheel bearing would it make a difference there in sound if the throttle is on or off? There also isn't any change I. Sound when cornering. There does seem to be a fair bit of play on the left output shaft compared to the right however...

 

How many miles do you have, out of curiosity?

 

About 57,000 miles

 

Seals are available from Jag, and the bearings are generic Ford ones.

Side seals, Jag p/n XR821244 (2x needed)
Pinion Seal, Jag p/n C2S1490 (1x needed)

Diff carrier bearings are p/n Timkin LM603049 available from various sources (google)

I don't have the part number for the pinion bearing, but try to find a "bearing kit" for a 2003 onwards Lincoln LS

 

Awesome! And these will work for my XK? Is it safe to assume the gear sets are sourced the same or are they bespoke to the XK?

 

Yes the diff in the 4.2L XK is the same as the X350 XJ, and S-Type & Lincoln LS from 2003 onwards.

When I had my Quaife LSD installed, those were the seals that came in the "kit"

Other members have confirmed that the Timkin P/N is correct for our cars.

 

You may have saved me a fortune. Thank you very much!