I'd love to know the answer to this as well. My old one had a diff whine from 40,000 and I would be a whole lot happier if someone could confirm there has been a part change.
In my case, part of the problem could be attributed to a blocked breather on the diff causing it to blow oil, so it may be something as simple as a redesigned breather could solve it? Just a thought.I know it's not considered "kind" to say no these days, but no. Just no, ok? And if it's not ok, still no.
11th Nov 2008 10:48 pm
10forcash
Member Since: 09 Jun 2005
Location: Ubique
Posts: 16534
The breather has been changed, the differential ratios are also different for manual & auto boxes but not for diesel / petrol versions. the main cause of failure is the input shaft seal due to harmonic vibration from the transfer box - the transfer box has been updated but the front & rear differentials stay the same
11th Nov 2008 10:54 pm
LT
Member Since: 31 Dec 2005
Location: South West
Posts: 23369
I'm sure someone will enlighten us soon as to why they fail & what if anything LR have done to rectify the problem.
I did think that running MTR's for about 15k miles, most of which was my normal mix of 80% on the motorways, might have not have helped. But I thinking that I'm probably thinking out of my a**e.
Cheers 10 I know it's not considered "kind" to say no these days, but no. Just no, ok? And if it's not ok, still no.
11th Nov 2008 11:00 pm
LT
Member Since: 31 Dec 2005
Location: South West
Posts: 23369
Told you.
Many thanks TFC
So really I should have a new transfer box as well or the problem could reoccur in c.60k miles!
12th Nov 2008 12:00 am
SN
Member Since: 03 Jan 2006
Location: Romiley
Posts: 13710
The front diff on my Feb 06 Auto was replaced under warranty after about 25,000 miles only Steve N | 21MY Defender | 08MY Discovery 3 (history) | 06MY Discovery 3 (ancient history)
12th Nov 2008 12:18 am
10forcash
Member Since: 09 Jun 2005
Location: Ubique
Posts: 16534
If the root cause is the harmonic vibration, then the front output shaft seal on the transfer box will eventually leak, if the cause is the front differential breather pipe, then the updated part will be fitted as part of the differential renewal process
12th Nov 2008 12:22 am
LT
Member Since: 31 Dec 2005
Location: South West
Posts: 23369
Thanks again TFC.
My dealer has a very helpful technical team, so I'll quiz them as to the cause tomorrow.
12th Nov 2008 12:34 am
simon
Member Since: 11 Jan 2005
Location: Shropshire
Posts: 18296
Is this a whine when you lift off the accelerator ?
12th Nov 2008 2:46 am
LT
Member Since: 31 Dec 2005
Location: South West
Posts: 23369
Simon, the diff. whine is with the throttle open. Lift your foot off the accelerator & the whine stops.
Because of that, I did initially wonder if the noise was coming from the turbo.
12th Nov 2008 11:55 am
LT
Member Since: 31 Dec 2005
Location: South West
Posts: 23369
Just spoke to one of the very helpful & patient tech. staff at my dealer (T.H.White ).
He said the cause was the interior coating of the diff. flaking off & contaminating the oil.
New diff. has different coating & breather pipe.
12th Nov 2008 4:24 pm
simon
Member Since: 11 Jan 2005
Location: Shropshire
Posts: 18296
Thanks LT.
I'm just looking for someone who can say why my whine happens when I lift off at 80. Whine present and diminishes all the way down to 70 then stops. No matter what gear, in neutral and whatever revs). Assume its transmission somewhere but I need to nail it down so my dealer can be more focused in their diagnosis (they won't drive that fast round Ludlow )
12th Nov 2008 4:54 pm
LT
Member Since: 31 Dec 2005
Location: South West
Posts: 23369
Well I took a technician out in my D3 with me driving. So that he could listen to the whine.
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) at about 57k miles. Its at the dealer now for this & its 60k mile service.
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