scott02464 · May 30, 2010

I have a Defender LT77 mated to a Disco LT230, its leaking at the two faces in which they mate up! (Deffo)

Can anyone please tell me what the seals and gaskets are there between the two boxes? And which ones are most likely to cause this leak?

Im just goin to replace the lot as its not just a standard landrover leak

Cheers, Scott

iannotts · May 31, 2010

there are 2 oil seals, one in the main g/box one on the transfer box check these

scott02464 · May 31, 2010

iannotts said:
there are 2 oil seals, one in the main g/box one on the transfer box check these

Thanks mate nice one

jimwyllie · May 31, 2010

Check What kind of oil is dripping, that should tell you which box has leak. Both seals are the same, they run on a collar on the main box output shaft. Transfer box seal is easy when boxes are split, main box seal is a bit more of a fiddle. If collar is worn it is possible to change it with hub puller. If leak is from transfer box there is also a possibility it is from o ring on one of lay shafts - took me ages to find that

scott02464 · May 31, 2010

jimwyllie said:
Check What kind of oil is dripping, that should tell you which box has leak. Both seals are the same, they run on a collar on the main box output shaft. Transfer box seal is easy when boxes are split, main box seal is a bit more of a fiddle. If collar is worn it is possible to change it with hub puller. If leak is from transfer box there is also a possibility it is from o ring on one of lay shafts - took me ages to find that

Cheers mate!

Whats the easiest way of identifying which oil it is? Either way will it be a case of splitting the transfer from the gearbox?

iannotts · May 31, 2010

the main box should be running ATF which is normaly a lot thinner than ep90 in the transfer box

scott02464 · May 31, 2010

iannotts said:
the main box should be running ATF which is normaly a lot thinner than ep90 in the transfer box

Ah of course! Its deffo ATF then mate! I now know that its the two seals one in each box, but its as if there is supposed to be a proper gasket, like a head gasket to seperate the two......

iannotts · May 31, 2010

scott02464 said:
Ah of course! Its deffo ATF then mate! I now know that its the two seals one in each box, but its as if there is supposed to be a proper gasket, like a head gasket to seperate the two......

thats what the oil seal are there for, nothing should pass them

scott02464 · May 31, 2010

iannotts said:
thats what the oil seal are there for, nothing should pass them

Yeah no worries mate, i must have knocked one of the seals out of place when i fitted the boxes together

Cheers mate

iannotts · May 31, 2010

scott02464 said:
Yeah no worries mate, i must have knocked one of the seals out of place when i fitted the boxes together

Cheers mate

use Sean's patentent long 10mm bolt trick when putting the boxes together works wonders, you'll need 10 least 3 100mm long 10mm bolts use them as guies to locate the boxes

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