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Jonno

Member Since: 06 Mar 2012
Location: Yorkshire
Posts: 234

2011 Defender 90 Puma 2.4 HT Santorini Black

Rear diff leaking

Leaking rear diff.

After 3 and a half years and 18000 leak free miles, my 2011 90 hard top seems to have started weeping from the diff seal. At first I thought it might be grease off the prop, however it's definitely getting worse.

Seems odd that it would take it 18000 miles to go from totally dry to weeping a fair bit, I would have thought if it was sealed from the factory it should last a lot longer...

Jonno

31st Oct 2014 9:55pm

Alicat

Member Since: 25 Nov 2013
Location: Hertfordshire
Posts: 135

Jonno

Just had exactly the same just 4 years old, 16000 miles and seal has started leaking. Luckily, has extended warranty and has been replaced under warranty.

Tony

31st Oct 2014 10:16pm

Jonno

Member Since: 06 Mar 2012
Location: Yorkshire
Posts: 234

Lol I hope that doesn't mean the design life is under 20k miles!

Mines not under warranty, so hoping it will be quite cheap to fix although I dare say a total pain to do.

Jonno

31st Oct 2014 10:36pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20294

Check the breather isn't blocked, cheapest option number 1.
Replace the diff oil seal option number 2.
If the above still fail a new flange and diff seal.
On mine until recently the breather never was blocked but leaked, so the seal was changed.
It then still leaked.......
I then had the seal AND flange replaced as per dealer recommendation and the leak is completely cured.
I'm guessing the flange was worn so even with a new seal its still leak.

31st Oct 2014 11:47pm

Jonno

Member Since: 06 Mar 2012
Location: Yorkshire
Posts: 234

Good advice there. I hope the flange isn't worn.....#iss poor if it is at 18 k but wouldn't surprise me !

31st Oct 2014 11:56pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20294

Mine started about 28k I think, after I did a heavy ish recovery.
Have you just been using it normally?
If you have might be worth mentioning to LR the exceptionally low mileage for an issue to arise.

1st Nov 2014 12:30am

110MGD

Member Since: 17 Oct 2013
Location: Wear Valley
Posts: 153

Done around 450 miles in 2 days in my 51' Td5 county on the way back from a camping holiday .... The leaks appear to have worsened.... Gonna park up all use the Mercedes all next week and see if they slow down. I wish it was only my rear diff that leaked abit!

2001 Td5 CSW (weekend and snow mobile) Plenty of lights, M/T tyres EGR delete, roofrack, swing away wheel carrier, snorkel.
2016 E220 CDI Night Edition Estate
2014 VW UP!
2x D3 and 1x D4 GONE

1st Nov 2014 12:37am

Jonno

Member Since: 06 Mar 2012
Location: Yorkshire
Posts: 234

Not had time to look into this but apart from the leak that's started around the input shaft it also seems to have started leaking around one of the bolts holding it together... This is making me think it's more likely to be the breather problem as mentioned before on this thread. I presume the back diff is vented to one of the collection of breather pipes under the bonnet?

If so the bonnet end openings are clear, not sure if they block where they go into the diff. Will have to investigate further.

Jonno

14th Nov 2014 6:14pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20294

Photo would be good if possible.

14th Nov 2014 6:30pm

bob neville

Member Since: 30 Apr 2009
Location: Marbella
Posts: 3248

My rear diff seal went at about 8K due to blocked breather.

Rear breathers normally vent at the back somewhere not under the bonnet unless extended. Very easy to find the vent position, follow the pipe from the top of the axle, normally about centre on one side, and you will find the end position. Then remove the pipe and check for a blockage somewhere along it's length.

Bob 2015 Jaguar XE240 R Sport - goes like ....... !!
2013 Defender 90 CSW - sold
2009 Defender 110 Double Cab - sold
2001 TD5 90 CSW - offroad project - sold to a forum member
2011 Porsche Boxster - for the sunny days !

14th Nov 2014 6:41pm

Jonno

Member Since: 06 Mar 2012
Location: Yorkshire
Posts: 234

Will try and stick a pic up in the next day or so, if it stops raining. Just hoping unblocking the breather stops the leak and it was just excess pressure forcing the oil through.

Jonno

15th Nov 2014 6:52pm

Alicat

Member Since: 25 Nov 2013
Location: Hertfordshire
Posts: 135

Well

Less than 400 miles since it was replaced and it is worse than before, dripping oil on the drive!

Click image to enlarge

1st Dec 2014 8:54pm

custom90

Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20294

That is a bad one, much worse than what I had.
If it was done at main dealer I expect you'll be heading back.

1st Dec 2014 9:53pm

Alicat

Member Since: 25 Nov 2013
Location: Hertfordshire
Posts: 135

Yep, main dealer. I have emailed them.

I have already had issues with the dealer and I am far from impressed.

1st Dec 2014 10:06pm

Barneyboy

Member Since: 19 Nov 2014
Location: Exmoor
Posts: 1619

1986 Defender 90 2.5 n/a Diesel ST Nato Green

Hi glad to see there quality has improved since we had our rear diff oil seal fail on our 2010 puma at about 6 weeks old less than 1 k miles,never towed anything never offroaded either

Cheers Paul tash n barney

2nd Dec 2014 6:52am

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