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Vmax



Member Since: 29 Apr 2023
Location: Europe
Posts: 77
Gibraltar 2008 Defender 110 Puma 2.4 SW Baltic Blue
Leck transfer box
I have a oil leak coming from top of the transfer box any idea where is coming from?
Post #1065778 18th Apr 2025 3:43pm
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MK



Member Since: 28 Aug 2008
Location: Santiago
Posts: 2474
Chile 2007 Defender 110 Puma 2.4 SW Chawton White
Hard to tell. In theory you should thoroughly clean it all over and then spot the leak source.

It implies removing the transmission tunnel and the middle plte under the cubby box. Puma 110" SW

.............................................................
Earth first. Other planets later
Post #1065854 19th Apr 2025 1:24pm
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custom90



Member Since: 21 Jan 2010
Location: South West, England.
Posts: 20861
United Kingdom 
Is the filler plug loose or in place ? _\Hennessey|Venom| F5/___
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____\We|Will|Win/___
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Post #1065857 19th Apr 2025 1:55pm
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Vmax



Member Since: 29 Apr 2023
Location: Europe
Posts: 77
Gibraltar 2008 Defender 110 Puma 2.4 SW Baltic Blue
Thank you very much for help l will check that filter plug.
Post #1065863 19th Apr 2025 2:20pm
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piechipsandpeas



Member Since: 12 May 2021
Location: Albany, Western Australia
Posts: 229
Australia 2013 Defender 110 Puma 2.2 SW Indus Silver
If it’s from the top of the box it could be from the breather banjo bolt. Like MK says, try removing the cubby box and the access cover from inside the vehicle which will allow you to see directly onto the top of the transfer bo to make identification of the source of the leak easier. It only takes a few minutes to do.
Post #1065868 19th Apr 2025 3:04pm
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Vmax



Member Since: 29 Apr 2023
Location: Europe
Posts: 77
Gibraltar 2008 Defender 110 Puma 2.4 SW Baltic Blue
Noted cheers for the advice.
Post #1065919 20th Apr 2025 10:12am
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jbcollier



Member Since: 29 Apr 2024
Location: Edmonton AB
Posts: 244
Canada 2009 Defender 110 Puma 2.4 SW Alpine White
The usual "upper" leaking point is at the front between the front output housing and the transmission. It is the shaft that supports the intermediate gear cluster. It is sealed by an o-ring and is not properly located. This allows a bit of movement that gradually wears the bore and then the leaks start. You can clean it off and coat it with sealer but that is just temporarily masking the problem. The T/C needs to come out, be stripped, and the machined for a steel sleeve. Ashcroft sells the repair sleeves.
Post #1065961 21st Apr 2025 3:42am
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Vmax



Member Since: 29 Apr 2023
Location: Europe
Posts: 77
Gibraltar 2008 Defender 110 Puma 2.4 SW Baltic Blue
Thank you very much 🙏 sorted.
Post #1067892 16th May 2025 10:01am
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