[rsk289]

Can anyone give me some advice on Kirkham diffs in a 289, please?

My Kirkham diff has been in the car for about 4,000 miles now and has performed faultlessly. However I was on a run this weekend, but after pulling off the highway a loud screeching metallic noise became evident from somewhere in the rear of the car. I've checked everything over and can find no concerns with wheel bearing, brakes (no stones stuck etc.), inteference from cables etc.

In checking the driveshafts, I discovered that there is very noticeable up and down movement of the diff output shafts. I can move the right side one up and down about ⅛", and the left side one a bit less. I don't know if this right or not, but I've checked a spare Jag diff I have and that has no movement at all. There is a sort of star wheel adjuster in the casing which looks as if it can adjust the bearing and is held in position by a small locking plate.

Can anyone advise, please?