I have 2 used differentials from my 07 XKR and 09 XJ Portfolio. Yep, I can pick em'. With that kind of luck you'd think I could win the lottery.
I'd like to have them both rebuilt. I believe it's an axle output bearing on the XJ diff, which I can probably do myself, but that's a lot of work to reinstall and find that wasn't the only issue. The XKR diff has a bad pinion bearing.
My question: Is there anywhere I can find the rebuild specifications - clearances, crush sleeve torque specs? From what I've seen in the forums, that information was never provided. Is that correct? I was hoping maybe that information was in Topix and I could get a subscription for long enough to get the info.
My rebuilder needs that info. If it is not available, is there anyone in the Greenville, SC area that has experience rebuilding these diffs that could do it for me?
I've already replaced both diffs with used diffs from NOMO Auto Parts, but would like to rebuild the units I took out.
Thanks for any advice.

 

Ranchero50 did a rebuild in one of these threads, not sure how much detail he posted.

 

Thank you, @kj07xk. That was enough to lead me to a post by @Cambo about the Lincoln LS 2003 diff being the same and I found the manual online. https://www.mediafire.com/file/1xnio..._2003.zip/file
I've attached the relevant section of the manual in case others could use it. Thanks to both of you for your invaluable contributions to this forum.

 

The X-100 models use a Dif Made in the Salisbury Plant in England. Probably the X-150 model same. The Salisbury plant is owner by Dana Corp. The Dif is very similar to the U.S Dana 40 and most parts will interchange. The Ring Gear bolts are different size and require a special bolt but they are available from Name Brand Gear Companies. The Dana 40 has many different ratios available. I found very little info on Jaguar Difs, but a wealth of info on the Dana 40. Ford used them for many years and probably other also. The Pinion also uses a yoke or flange and may be different from the Jaguar part. The Ring Gear bolts are only a minor problem and shouldered bolts are available to handle this difference. Once the Salisbury and Dana link was established, the search revealed so much more info and even a few Jaguar people chimed in the Dana parts. Good Luck.

 

Actually, the X150 uses 2 diffs entirely different from the Salisbury/Dana. @Cambo did a fantastic job sorting it all out for us here. https://www.jaguarforums.com/forum/j...ntials-134733/
The diff in my X150 is the same as the 2003 Lincoln LS.
Thanks for your input though. This community is invaluable in maintaining these cars.

 

And not forgetting the ford thunder diff which has the 3.58 ratio , your correct gen 2 diff from Lincoln LS will bolt up and the V6 from the Lincoln LS also comes with the 3.58 ratio .

By memory I'm pretty sure the xj comes with the 2.87 diff ratio

 

Thanks, @steve_k_xk . I was really looking to rebuild my two original diffs, and may try to replace the left carrier bearing on the XJ 2.87 diff. Pinion bearing on XKR is a whole different thing. I've installed 2 used diffs now and one seems perfect, the other a bit noisy (3.31 in XKR) but can't tell if that's normal or not, it being right behind my right elbow. Was hoping on rebuilds by a professional so that I wouldn't have to worry. It's a lot of work swapping a diff in and out Hoping it's a good one. But, with so many choices used, maybe it's not worth it.
Dale