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TamarBlue11



Member Since: 25 Sep 2020
Location: England
Posts: 216

United Kingdom 2011 Defender 90 Puma 2.4 HT Tamar Blue
Transferbox oil leak?
Hi guys

I recently purchased a 2011 2.4 Puma 90 and have noticed a small leak from what looks to be coming from the transferbox.

Not sure if anyone can tell from the photos, but doesnt appear to be obvious where its coming from. I dont think its the drain plug as there are drips higher up.

https://www.dropbox.com/s/76i08w8z4vh7wv2/...3.jpg?dl=0
https://www.dropbox.com/s/hcq3eg3d9672up5/...7.jpg?dl=0


Any advice is greatly appreciated about possible sources, thanks!
Post #858080 25th Sep 2020 2:21pm
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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2237

Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
99% likely to be a worn case where the intermediate shaft locates. How many miles on your 90?

From ashcrofts website "The hole that supports the head of the intermediate pin in the LT230 casing is prone to wearing, and the pin elongates the hole so that it is out of round. This can lead to a transfer case whine, and an oil leak"

There are a number of options...

Do nothing and monitor oil level.

Cheap and cheerful - lather the area in instant gasket. The pin does not rotate so this may work in the short term. The previous owner did this to mine and it held up for a little while.

To properly resolve the issue is a transfer box off job unfortunately as the gearbox partially covers the intermediate shaft meaning you can't withdraw the intermediate shaft in situ to replace the seals.
I have read about people fitting threaded bar in place of the gearbox fixing bolts to enable the transfer box to be slid back just enough to change the intermediate shaft seals but I've not tried this myself.

Even once the transfer box is off you have a few options...

Replace the intermediate shaft o-rings - could last you a long while if your casing isn't too worn. See youtube vid below.

More expensive - replace with a rebuilt box but just be careful as the rebuilt casing could be just as bad as yours.

Labour intensive - rebuild box into replacement ashcroft sleeved casing. I have recently done this, it's the belt and braces approach and with a bit of luck will provide good longevity https://www.ashcroft-transmissions.co.uk/d...asing.html

I've also read about the Aussies modifying the case to accept a core plug as a seal.



 > 110 XS Double Cab
> Instagram @simonlanemind
Post #858082 25th Sep 2020 2:49pm
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Race.it



Member Since: 27 Aug 2019
Location: Algeciras
Posts: 744

Spain 2010 Defender 110 Puma 2.4 SW Alaska White
I have similar issue, going to swap fluids first as mine has had some repair in the past for a leak on transfer case.

Then plan the attack Searching for my first Defender...and started just as Covid hit, so talk about timing.

5 months after starting the search I found it, and here is the details
Post #858086 25th Sep 2020 3:13pm
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TamarBlue11



Member Since: 25 Sep 2020
Location: England
Posts: 216

United Kingdom 2011 Defender 90 Puma 2.4 HT Tamar Blue
Thanks Hank for the detailed reply, there's just under 90k on the clock.

In the first instance I might apply some instant gasket and see how long that holds up as you suggested. I guess I would just use this in the area thats circled in your photo?

Cheers
Post #858093 25th Sep 2020 4:13pm
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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2237

Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Indeed. You can see the one below has been sealed with instant gasket. Thing is the shaft/case where you want to access is largely covered by the gearbox output flange so you won't be able to seal it up fully in situ without disconnecting the transfer box from the gearbox. Right pain.


Click image to enlarge
 > 110 XS Double Cab
> Instagram @simonlanemind
Post #858095 25th Sep 2020 4:25pm
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TamarBlue11



Member Since: 25 Sep 2020
Location: England
Posts: 216

United Kingdom 2011 Defender 90 Puma 2.4 HT Tamar Blue
Makes sense, thanks for your help.

Will give the instant gasket a go tomorrow!
Post #858098 25th Sep 2020 4:35pm
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ickle



Member Since: 22 Jul 2010
Location: South Vendee
Posts: 1729

France 2008 Defender 110 Puma 2.4 CSW Alpine White
use a good degreaser spray (mind your eyes) carb cleaner etc first, gasket goo on your digit and work it in around the area and you may be lucky for a while - IIRC I did mine in situ with longer studs, pulled the shaft partway out, changed the seals, added the goo and put it all back in place, still good 5 years plus later.

Good luck
Post #858099 25th Sep 2020 4:43pm
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jst



Member Since: 14 Jan 2008
Location: Taunton
Posts: 7722

2011 Defender 110 Puma 2.4 USW Stornoway Grey
One of mine leaks badly here. I am going long term fix and replacement t box from ashcrofts, with that bit sleeved and will also take opportunity to change ratios. 130 is heavy and tows a fair bit so will try out 1.3box. Cheers

James
110 XS Utility
130 Puma Station wagon/camper (in the making)
90 Puma Hardtop
Post #858258 26th Sep 2020 5:06pm
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