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Kevzeboy



Member Since: 19 Jul 2014
Location: Cumbria
Posts: 83

United Kingdom 2011 Defender 110 Puma 2.4 USW Indus Silver
TDCI Transfer Box Oil Leak?
My 2011 TDCI has developed an oil leak on the transfer box. The annoying part is that I can't see where it comes from. It isn't at the outputs though.

I think it is coming from the top of the box somewhere?

Has anyone else had a similar situation or is there a common leak place?

Any thoughts?

Kevin
Post #372592 18th Nov 2014 9:42pm
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landy andy



Member Since: 15 Feb 2009
Location: Ware, Herts
Posts: 5720

2006 Defender 110 Td5 USW Zermatt Silver
First check would be the breather?

Andy
Post #372630 18th Nov 2014 11:45pm
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Rickydodah



Member Since: 14 Jul 2014
Location: East Sussex
Posts: 1091

Re: TDCI Transfer Box Oil Leak?
Kevzeboy wrote:
My 2011 TDCI has developed an oil leak on the transfer box. The annoying part is that I can't see where it comes from. It isn't at the outputs though.

I think it is coming from the top of the box somewhere?

Has anyone else had a similar situation or is there a common leak place?

Any thoughts?

Kevin


Mine leaked for ages and i couldn't find the source, so out it came, took it apart and reassembled with Hylomar Hydrosil. Result, it still leaked but as I had been able to degrease the box what before looked like it was coming from the input shaft seal was infact coming from two bolts lower down. For some reason I can't explain when they designed the box some of the bolts, One from the front output shaft assembly and one where the box bolts to the gearbox extension are not blind holes. The ends of the bolts sit in the transfer box oil. While I thought that I'd sealed these well enough on assembly I obviously didn't pay enough attention to this area. So out they came again, had to drain the box again which is APITA and treated the bolts with even more Hydrosil and allowed 24 hours for it to cure. So far so good, I don't think the box was over pressurising and the breather was clear so it must have been capillary action drawing oil along the threads.
Good luck as it really is a pain in the preverbial.

Thumbs Up
Post #372689 19th Nov 2014 10:05am
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Kevzeboy



Member Since: 19 Jul 2014
Location: Cumbria
Posts: 83

United Kingdom 2011 Defender 110 Puma 2.4 USW Indus Silver
Stupid question: where is the breather on the transfer box?
Post #372702 19th Nov 2014 10:27am
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Rickydodah



Member Since: 14 Jul 2014
Location: East Sussex
Posts: 1091

It's on the top of box towards the front, it's held on by a banjo bolt with the tube going to the front near side of the engine bay. It's easier to get at by removing the centre panel of the seat box. Thumbs Up
Post #372833 19th Nov 2014 6:55pm
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Supacat



Member Since: 16 Oct 2012
Location: West Yorkshire
Posts: 11018

United Kingdom 2013 Defender 110 Puma 2.2 XS DCPU Keswick Green
Kevzeboy wrote:
Stupid question: where is the breather on the transfer box?




Item 4.

Full list is:

1. Rear output housing
2. Main casing
3. Transfer box selector lever
4. Breather pipe
5. Front output housing
6. Selector housing
Post #372953 20th Nov 2014 8:47am
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Kevzeboy



Member Since: 19 Jul 2014
Location: Cumbria
Posts: 83

United Kingdom 2011 Defender 110 Puma 2.4 USW Indus Silver
Thank you all, will have a look at the weekend.

Is it a major job to take it off and do all the seals if it's not a blocked breather?

Is it worth changing the shaft between the gear and transfer box if it was to come out?

Kev
Post #373020 20th Nov 2014 2:38pm
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Rickydodah



Member Since: 14 Jul 2014
Location: East Sussex
Posts: 1091

Did you mange it? Not a difficult job just 'kin heavy. Whistle
Post #373820 23rd Nov 2014 9:28pm
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Kevzeboy



Member Since: 19 Jul 2014
Location: Cumbria
Posts: 83

United Kingdom 2011 Defender 110 Puma 2.4 USW Indus Silver
I got underneath and the breather has been touching something warm at some stage, it's a little distorted with heat. It still works, although restricted.

What's the best options: wading kit; or, just get some hgv air pipe and make your own wading kit?

May not fix the leak, but 2 and 2 together and it doesn't help!

Does the gear box have a breather?

Thanks for your responses so far!

Kevin
Post #375435 1st Dec 2014 7:33am
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munch90



Member Since: 26 Oct 2013
Location: guildford
Posts: 3558

England 
yes gearbox has a breather pipe but it runs in to bell housing

if you look at above picture under the number4 you can see a pipe running up to bell housing from in front of gearlever close to the gearbox (gray colour pipe )
Post #375438 1st Dec 2014 7:41am
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