Differential Noise
#62
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Gen 2 only have the drain plug , I don't remember if it's the 3/8 or 1/2 square drive to get the plug out either way you'll see when you're under there .
I swapped my diff out a few years ago now I end up going with a shorter final drive ratio from a gen 2 LS Lincoln / thunderbird
I swapped my diff out a few years ago now I end up going with a shorter final drive ratio from a gen 2 LS Lincoln / thunderbird
P.S. I will try with the oil change first. Will see if that will help. I will probably go with this: Valvoline SynPower 75W-140 Full Synthetic Gear Oil
![](https://cimg5.ibsrv.net/gimg/www.jaguarforums.com-vbulletin/361x496/valvoilne_f59acc6c901148cdbc19140b4de17936383bb291.jpg)
It says it has additive for LSD. Hope that wont be an issue since my XK has an open diff.
#65
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Richard
The following users liked this post:
neven.gordic (08-09-2024)
#66
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I have had to replace the diffs in my last 2 cars, an X150 and X358. Bought used diffs on ebay. The one for X358 is fine. The one for the X150, not so sure. Has a whine, too. The fill port takes a 3/8 square drive. There is no drain port. 1.25l and I used 75w140 Amsoil Severe Gear lube, no additives. They are open diffs. May have the original X150 diff professionally rebuilt as a backup. Don't really look forward to replacing another diff on a Quickjack Portable lift. Great lift, but lying on your back to R&R a diff isn't fun at 70.
The failure on the X358 was the left side carrier bearing. On the X150 it was the pinion bearing. Parts for the TSB are NLA - diffs, drives, axles. The only options are rebuild or take a chance on used.
The failure on the X358 was the left side carrier bearing. On the X150 it was the pinion bearing. Parts for the TSB are NLA - diffs, drives, axles. The only options are rebuild or take a chance on used.
Last edited by luv2fly; 08-12-2024 at 09:31 AM. Reason: add comment
#69
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The best thing is to have yours professionally rebuilt. Bearing kits are available. There are instructions on here about how to do it. https://www.jaguarforums.com/forum/x...lation-155867/
Bearing and seal kits. Timken p/n DRK311, DRK311B, DRK 311BMK https://www.ebay.com/itm/374468311147
If you are mechanically inclined, it's a simple if not easy job. Even a small scissor lift like the QuickJack portable is a great help. And a short transmission jack. The hardest part is accessing the 2 retaining bolts in the frame and
then torquing them. Had to have friends make a flat piece of 3/8" steel with a cut down socket on one end and 3/8 drive on the other for a torque wrench extension, then do the math to re-torque.
And absolutely paint mark all three of the driveshaft bolts. One of them has a small balance nut on it and they all must go back where they came from.
Let us know what you decide.
The following 2 users liked this post by luv2fly:
neven.gordic (08-14-2024),
steve_k_xk (08-13-2024)
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