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LandymanStefan



Member Since: 30 Aug 2017
Location: Surrey
Posts: 881

England 2001 Defender 90 Td5 SW Epsom Green
LT230 Speedo Transducer leak
My transfer box has been leaking for a few years from the green speedo sensor plug. Its got progressively worse and now its annoying me. Does anyone have a diagram of this part of the box?

Or does anyone know f theres a gasket around it that i can change. Part numbers etc would be useful.

Ive tried to have a look at it but its tucked up behind the hand brake drum so i'll wait until i have the bits to fix it before faffing with the prop and handbrake.
Post #871176 3rd Dec 2020 7:07pm
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Oldowner



Member Since: 26 Dec 2018
Location: South west
Posts: 634

United Kingdom 2007 Defender 90 Puma 2.4 HT Aintree Green
There is an oring and seal that can be changed on the speedo drive housing -this can be pried up with lever as there is a lip on the housing.

I completely rebuilt my lt230 last year and replaced every seal and o ring, drive flanges etc, had the casing sleeved and fitted a syncro gearboxes shaft and high capacity sump. 12 months on and it is 100% drip free still.
Post #871181 3rd Dec 2020 7:32pm
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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2314

Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Leaking from the plug/sensor or the housing?

Bit odd to be leaking there as it’s high and out of the oil bath. Sounds like it could be building pressure when hot? > 110 XS Double Cab
Post #871188 3rd Dec 2020 8:37pm
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jst



Member Since: 14 Jan 2008
Location: Taunton
Posts: 8152

 2011 Defender 110 Puma 2.4 USW Stornoway Grey
Blocked breather?

If its the housing they can be Censored to get out, expect the lip to fail! Could just be the sensor its self but as ^^^^ how much oil is in it? Cheers

James
110 2012 XS Utility
130 2011 M57 bespoke Camper
90 2010 Hardtop
90 M57 1988 Hardtop
Post #871191 3rd Dec 2020 8:54pm
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LandymanStefan



Member Since: 30 Aug 2017
Location: Surrey
Posts: 881

England 2001 Defender 90 Td5 SW Epsom Green
One of these?
https://www.ebay.co.uk/itm/164151927568

Congrats on your leak free rebuild 👍

I took my box apart to change ratio but never removed the speedo sensor and that’s the only bit that leaks. Would’ve been easier on the bench but hey ho!

Yes i'll take some pictures on the weekend.
I cant work out if its the housing or sensor and the whole area has been covered in gearbox oil gloop.

Will also have a look at the breather

Thanks chaps

Is there an exploded diagram of this part of the box
Post #871194 3rd Dec 2020 9:09pm
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hank



Member Since: 12 Sep 2016
Location: South Wales
Posts: 2314

Wales 2007 Defender 110 Puma 2.4 DCPU Stornoway Grey
Yeah have a good look. It’s close to the intermediate shaft failure point. If you’ve not already sorted that as part of your rebuild then could well be the culprit?

In my mind the speedo sensor seals on a crush washer? Perhaps my memory has failed me > 110 XS Double Cab
Post #871206 3rd Dec 2020 9:36pm
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Mo Murphy



Member Since: 01 Jun 2008
Location: Letchworth Garden City, Herts
Posts: 2270

United Kingdom 1984 Defender 90 BMW M57 3.0 Diesel HT Auto Pennine Grey
Your memory has failed you. It seals with O rings as above.
Mo The Land Rover 90 - Many are called, few are chosen.

50 Shades of Pennine Grey
Post #871264 4th Dec 2020 10:23am
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Martin
Site Admin


Member Since: 02 Apr 2007
Location: Hook Norton
Posts: 6633

United Kingdom 2015 Defender 90 Puma 2.2 XS CSW Montalcino Red
That eBay part is not the correct part for the speedo transducer.

571665 is listed with the sensor in the catalogue.

Worth putting in with an order of other parts as it's the grand cost of 20p. The eBay part above is 16p so you're mainly paying for postage.  1988 90 Td5 NAS soft top
2015 D90 XS SW
Post #871272 4th Dec 2020 11:51am
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LandymanStefan



Member Since: 30 Aug 2017
Location: Surrey
Posts: 881

England 2001 Defender 90 Td5 SW Epsom Green
Thanks for the replies chaps apologies for the slow reply i havent been on the forum much at all of late. I havent had a chance as ive been doing buidling work to my house and the weather hasnt been ideal for crawling under the car.

Will double check my breathers and have a good look and take pictures at some point and report back.
Post #884792 11th Feb 2021 6:58pm
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Hufflepuff



Member Since: 25 Oct 2014
Location: Hampshire
Posts: 727

England 2005 Defender 90 Td5 XS CSW Tonga Green
If it is any help to you Stefan, I just fitted this little lot to my own LT230:


Click image to enlarge


The main O-ring seal sits in the groove on the drive spindle. The little "Oil Seal Speedo Pinion" on the end looks to me like a complete waste of time. I can't imagine it will stop any oil which is driving up the gear spindle, its a pretty loose fit on it.


Click image to enlarge



Click image to enlarge


I am not even sure what will keep it in place, it seems free to float up and down the gear spindle by a good 5mm.


Click image to enlarge



Click image to enlarge


Oh well, fitted and forgotten.


Click image to enlarge
 2005 Td5 90 XS
1989 V8 110 CSW
Post #884834 11th Feb 2021 9:06pm
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Hufflepuff



Member Since: 25 Oct 2014
Location: Hampshire
Posts: 727

England 2005 Defender 90 Td5 XS CSW Tonga Green
I should mention I was just following Will's excellent website's diagram:


Click image to enlarge


It is quite possible I didn't do something right - I really can't see that end seal doing anything beneficial. 2005 Td5 90 XS
1989 V8 110 CSW
Post #884837 11th Feb 2021 9:10pm
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LandymanStefan



Member Since: 30 Aug 2017
Location: Surrey
Posts: 881

England 2001 Defender 90 Td5 SW Epsom Green
Thanks for the pictures I’m sure they’ll come in useful when I investigate
Post #885191 13th Feb 2021 9:35am
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