Taking out the gearbox (manual)

[adaxo]

I don't recall a seal between gearbox and t case, hope I'm not wrong though lol

There is very thin o-ring type seal between them, look no 30289P

tc seal.jpg

[SEAN-NZ]

30289? That's not the seal I was thinking of

[adaxo]

30289? That's not the seal I was thinking of

Actually there are two in between gbox and TC 30289P and 30289S, IMO if any of them fail then is a big chance to have oil leak between TC and gbox joint.

[Davezj]

is there a chance that the oil is just running back towards the tansfer case from the gear box, and it is actuall leaking from the input shaft of the gear box.
looks like quite a lot of oil leaking out so a quick clean up, with carb cleaner go, leave it standing with engine running then check for leak. wold five you a better idea where it is coming from.
if it does not leak when staionary then go for a quick drive and check leaks, you are etter being sure where it is coming from before you jump in and start replacing seals that do not need replaceing.

[alexander-a]

is there a chance that the oil is just running back towards the tansfer case from the gear box, and it is actuall leaking from the input shaft of the gear box.
looks like quite a lot of oil leaking out so a quick clean up, with carb cleaner go, leave it standing with engine running then check for leak. wold five you a better idea where it is coming from.
if it does not leak when staionary then go for a quick drive and check leaks, you are etter being sure where it is coming from before you jump in and start replacing seals that do not need replaceing.

Have done this a couple of times already and leaks always come back in the same place. And leaks are only visible after a few days

[alexander-a]

When I find the exact seals is it worth doing any other seals that will be accessible? and is getting them from Mitsubishi reccomended?

[TAR]

I would recommend that you get seals and gaskets from Mitsubishi. They are generally not very expensive and genuine parts will give peace of mind that it will resolve your problem properly.

[alexander-a]

Update:
Since I'm going to ahead with repairs soon (handing it over to my mechanic) I thought I would change the transfer case and rear diff oil at the same time.

[Jnic0]

I don't recall a seal between gearbox and t case, hope I'm not wrong though lol

Yeah. Same here. Did clutch on my car a few weeks ago and don't recall any seals between them. The driveshaft seal should be easy enough to do in your garage though, providing you have some tools to beat the hell out of the driveshafts to disconnect them from the hubs.

If you are going to take out the gearbox/tshaft seal, if it is leaking from there, you might as well replace clutch if it's nearly time anyways. That seal is about 90%of cltuch job right there. And unless you have a slide hammer, you won't be able to do it in your own garage. It's quite a big job and I don't recommend you doing it if you're not confident - it's quite a long and stressful process.

[Nick Mann]

As per Adams (adaxo) post near the top of this page, there are a couple of o rings between the transfer box and the gear box.
You don't need a slide hammer, but the job is properly nasty without. If you are happy on the spanners then it's not a very difficult job, just lengthy, especially the first time you do it.