Leaking gearbox and transfer box

AH-4x4 · Aug 3, 2017

Hi, my defender 90 200tid was a full rebuild 90 when I bough it.... it has always had a leaking transfer box and gearbox.

The transfer box leak seems to be from the seal on the large rectangular plate... so I am going to order a replacement seal kit and just change the seal (fingers crossed that should solve it).

The gearbox is leaking from the bell housing.... not sure what's the issue here so any help would be great.

Next question (sorry)- can I drop out the transfer box and gearbox as one unit..?

Reading the manual it notes the use of a special bracket to hold the units... is this really needed.?

Why I am dropping out these units I am also replacing he clutch, why doing all this work is there anything else worthwhile doing.?

mikescuba · Aug 4, 2017

Good luck with the transfer box oil leak. I changed mine a couple of times but the leaks still come back. I found using a Araldite type of sealant worked better. I also had to put the Araldite around each of the bolts that hold the plate in. Its one of those jobs that have to be done fairly regularly.
I don't have a problem with gearbox leaks.

david9393 · Aug 4, 2017

Are you sure it's gearbox oil leaking out of the bell housing? If it's coming out of the wading plug hole then it could be engine oil which would likely mean you need to replace your rear crankshaft oil seal.

Kwakerman · Aug 4, 2017

Black filthy oil from the bell housing will be engine oil, if its clean (and perhaps with a hint of red) could be gearbox. Could always check levels to see if it has dropped. Both can be removed as a single unit but awkward to manoeuvre around if you are trying do it from inside the cab (vehicle on the ground) in which case splitting the boxes is easier but a bit more time consuming. Not done it when on a ramp so cant really comment on that method.

AH-4x4 · Aug 5, 2017

Thanks for the great comments... this is a great help. Last question, removing the transfer box and gearbox in one can it be done by dropping it under the Land Rover?

Kwakerman · Aug 5, 2017

AH-4x4 said:
Thanks for the great comments... this is a great help. Last question, removing the transfer box and gearbox in one can it be done by dropping it under the Land Rover?

Cant see why not after removing the gearbox cross member but never tried it

The Mad Hat Man · Feb 22, 2020

You didnt fix it two years ago then?

Leaking gearbox and transfer box

AH-4x4

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mikescuba

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david9393

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Kwakerman

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AH-4x4

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Kwakerman

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The Mad Hat Man

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