MT82 Adapter Shaft

**DazzaTD5** · 28th April 2016, 08:31 PM

Originally Posted by manofaus

Don't run away with the idea that cnc makes parts exactly the same. Of course they will be within spec but when machining parts on cnc you start at lowest spec and as tool wears your reach top spec and either adjust, sharpen or replace tooling. But don't forget you have two parts mating. So worst and best case scenario is you get get one on top spec and one on lower spec. So really tight or really loose. It would be up to the assembler to match your parts as measured. Don't think they do that with tractors.

Tractors (like a lot of industrial machinery) by comparision are made to good high standard.

If we look at very low production items such as Land Rovers, and look back to "times of old" when Land Rover had no money (while Ford improved the situation, Ford also had no money), the adapter shaft as used in the Discovery between the transfer case and ZF auto, we didnt see any excessive wear.

And considering the tooling for the Defender TDCi (adapter shaft) is only relatively new, we can only assume that its not the tooling tolerances, but the quality of material used and / or a mis-match in the spline angle. Again as mentioned, ask any Land Rover repairer if they have pulled a gearbox and found a adapter shaft that isnt worn.

If it was tooling variation, we would see variation like the centre diff issue on the transfer case (as in some are tight, some are loose and have lots of freeplay "clunk clunk"), instead of using a "selective thrust" as used in times of old (to take up variation in machining), every transfer case I've stripped from a Defender TDCi had the same size thrust on both sides of the centre diff, where as the transfer cases of old had different sizes... As in the selective thrust is what took up variation in machining.

While some of the "Ford" things are awesome on a Defender TDCi (puma), 6 speed box, ford engine, dash, light clutch, ford way of mounting gearbox to engine (as in they dont hang cooling brackets off the bellhousing bolts). Other things have suffered the ford way.... transfer case preload (one size fits all), the adapter shaft and axles / drive flanges (as in poor quality of material used).

Anyway.... its all just something we kick around the workshop over beers and nothing more, Land Rovers have issues... Specialist Land Rover repairers find solutions....

Regards
Daz

MrLandy · 3rd May 2016, 09:24 AM

I've just noticed this in my 2014 Defender owners handbook. Right there in the centre of the page. So I can assume my adapter shaft is lubricated? "Gearbox extension shaft to transfer case - Weicon Anti Seize Standard Grade or equivalent".

**51mondays** · 3rd May 2016, 10:28 AM

Originally Posted by Pickles2

Pete, trying to get the W.S. Manager is virtually impossible, He is a great bloke, but He's always "doing something", so He's hard to reach by phone.
I'm pretty certain mine was dry. However I was given an explanation of the two parts, and was told that they are of course made to manufacturers specifications/measurements, & if these were always EXACTLY the same, there would be no issue.
However, the problem arises when different "batches" have slightly different tolerances, so that the join is not "exactly" as it should be with just a very slight amount of variance/play,.....which is when the problem can occur.
I was pretty shocked when Gracie lost all drive let me tell you,...and the day before, we were about 300ks further from home, so things could've been much worse.
With your journey in mind, I'd DEFINITELY be getting yours checked, in fact I'd recommend anyone to do so,...it can't be that much of a job & I can assure anyone, that the nominal cost involved would be FAR preferable to a breakdown on the side of the road, miles from home, in 30C heat.
Martin.

mines in for first 1yr (18,500km) service Thursday...at Lance Dixon. I'll see what I can find out. I spoke to a service bloke on the phone who said that there was no know issues that they'd been told to check for on my vehicle MY15 110 defender. Well...I guess i'll ask them again when I drop it off. As you suggest pickles maybe just paying for it to be checked is good insurance. the mystery of "is there or isn't there grease in the thing?"!

**alien** · 3rd May 2016, 11:26 AM

Originally Posted by MrLandy

I've just noticed this in my 2014 Defender owners handbook. Right there in the centre of the page. So I can assume my adapter shaft is lubricated? "Gearbox extension shaft to transfer case - Weicon Anti Seize Standard Grade or equivalent".

My hand book says the same thing yet the splines where bone dry.
The assumption is - it should be lubricated, most appear not to be.

One to ponder...
If you get a dealer to check it within the warranty period and its dry should you pay?
The book says it should be greased.

MrLandy · 3rd May 2016, 01:23 PM

Originally Posted by alien

My hand book says the same thing yet the splines where bone dry.
The assumption is - it should be lubricated, most spear not to be.

One to ponder...
If you get a dealer to check it within the warranty period and its dry should you pay?
The book says it should be greased.

Thanks Kyle, hmmm bugger. Yes absolutely. Did you claim under warranty?
Obviously bit tricky if dealer won't let you in the workshop to see it come out.
Anyone else in same situation?

**alien** · 3rd May 2016, 01:54 PM

Originally Posted by MrLandy

Thanks Kyle, hmmm bugger. Yes absolutely. Did you claim under warranty?
Obviously bit tricky if dealer won't let you in the workshop to see it come out.
Anyone else in same situation?

We picked ours up just as it came out of the 3 year factory warranty.
The reasoning was I could set it up the way I wanted to figuring any little issues had been sorted by the first owner.
All I'm doing now is going through the known failure/weak points and addressing them as I see fit.

**DazzaTD5** · 5th May 2016, 11:52 AM

I would make the assumption that if you dont see any tell tale signs of a bluey type grease coming from the bottom of the adapter housing, your adapter shaft was assembled with no grease.

I've only seen very last models that were leaking grease.

Regards
Daz

MrLandy · 5th May 2016, 07:28 PM

Originally Posted by DazzaTD5

I would make the assumption that if you dont see any tell tale signs of a bluey type grease coming from the bottom of the adapter housing, your adapter shaft was assembled with no grease.

I've only seen very last models that were leaking grease.

Regards
Daz

Thanks Daz, yeah no blue grease, mid 14 model 50,000 km. ...But I have noticed oil weeping between gbox and tcase, also from clutch drain hole, so i have it booked in for warranty check in a couple of weeks. Will talk with them re adapter shaft grease too, as I reckon box will need to come out by looks of it. Hmm.

**scarry** · 5th May 2016, 07:52 PM

There is also a hole in the bottom of the spacer(i think that is what it is called) between the gearbox and the transfer case.

If there is orange dust around it,good chance the shaft has no grease.

**loneranger** · 5th May 2016, 08:51 PM

When we were having troubles with the backlash on my 110 the dealer said they would grease it at the first service. I get very little backlash since then and everything feels a lot smoother. The 90 on the other hand didn't appear to get grease at its first service and I'm waiting for something to break so they can fix it.

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