Bloody oil leak!!!!

[disco95]

After rebuilding the TC in Rosemary last year she developed a pretty bad oil leak, oil run is probably more the term :roll:
I couldn't work out why, as I'd done everything right. :x
I finally bit the bullet and pulled the box back out for a gander, none of the gasket crap I'd put in was left. It had pretty much all disolved 8O
This time I pumped the RTV silicon into the joints thinking "there's no way this is ever going to leak again" 8)
How wrong was I. I'd only got it all together last night, and took her out this morning for the weekly shop and a visit to the vet for little Stockoodie.
Got home this afternoon and lo- and behold :!: Oil spots under the goddamned vehicle in the vicinity of the TC.
Is there any stop leak stuff you can put in these damn things to stop this?
It never leaked a drop befor ethe rebuild, but those who are familiar with the vehicle will know that I needed a new housing, perhaps the machining isn't as good on this one as the original. I would have thought the silicon crap would've made up for it though. :roll:

[disco_ute]

I figure you are talkng about the LT230....

where is it leaking from?? the bottom cover? I had this problem on my 93 Rangie after i rebuilt the t/case due to a bad bearing... I used some RTV but i let it dry for 1/2 hour or so then put the cover on.... hasnt leaked a drop since... and it has oil in it!!

HTH

Mick

[gruntfuttock]

On any joints that have a tendency to look like problem ones, I use "Stag" It will with stand steam pressure so rekon it will do all right on most things. It is just not very flexable as it sets hard, so it is not good for everywhere.

[BigJon]

Be very careful refitting the transfer case, it is easy to snag the input shaft seal on the gearbox output shaft, creating an instant leak in a brand new seal.

[stevo]

I don't like using silicone sealer as a gasket sealer some types are not very oil or heat resistant loctite have a good sealer 510 or 515 and I have seen one motor stuffed when someone used to much on a sump gasket the excess went and blocked alot of the oil galleries.

this was on a trench digger,the motor is flat out all day needed a new crank and camshaft plus rockershaft and followers the proper gasket sealers stay in a liquid form when in contact with air and dissolves in the oil.

[disco95]

I think maybe it's leaking from both ends of the intermediate shaft. I've heard that the O rings can leak and there's not much that can be done about it. They were new last year when I did the whole TC. I just can't see the gaskets leaking, I really made sure I did a good job of it this time.
The RTV silicon is pressure, heat and oil resistant. It doesn't set solid either, but stays rubbery.
I'm at a losss as to what to do with it now. Buggered if I'm going to pull it out again, it's no where near as bad as it was.
Oh well, another spot to match my steering box leak https://www.aulro.com/afvb/

[stevo]

mine is leaking at the intermediate shaft,the O rings may not have sufficent crush other O rings on the car I have done suffered from this but using after market ones seem to solve this.

[tombraider]

Originally posted by stevo
I don't like using silicone sealer as a gasket sealer some types are not very oil or heat resistant loctite have a good sealer 510 or 515

Steve is spot on on this one... RTV doesnt like oil... in fact it rather hates the stuff!!!!

You need the loctite gasket sealer, Silicone is for sealing against moisture.
Personally I have never used silicone on a vehicle component and would advise against it completely.

Out comes the TC again!!!! Sorry https://www.aulro.com/afvb/

Cheers
Mike

[tombraider]

Originally posted by disco95
The RTV silicon is pressure, heat and oil resistant. It doesn't set solid either, but stays rubbery.

Oil resistant means if oil drops on it, it wont react violently.

You want "Oil compatible" and even then "Oils aint oils, Sol"

It only takes a single additive (by manufacturer) to change oils compatibility with sealing compounds and rubbers.

Cheers
Mike

[maggsie]

I have used the blue RTV as my sump gasket and also on my T/case and gearbox and there are no leaks!

[p38arover]

I used to use silcone but had mixed results. On advice from my local LR specialist, I've moved to more expensive products, Loctite 515 and 518 Master Gasket.

These are really good.

Ron

[DEFENDERZOOK]

<span style="color:blue">the blue rtv is specialy made to be used as a gasket......and it says so on the tube.....

but by using it on machined metal surfaces without any gaskets it will leak
as the rtv just gets squished out when the bolts are tightened.....

where as if you have the gasket coated with a very light smear of sealant
on both sides it will seal as the gasket compresses and the rtv takes up any
imperfections that may exist in the sealing surfaces.....</span>

[disco95]

Hmmmm I'll have to check the tube, see exactly what it says about oil.
Funny, today there wasn't a drop under the vehicle. (At least not where the TC was). :roll:

[Graz]

Its a good thing to remember that a lot of the jointing compounds such as Aviation Formagasket and Hylomar ( Probably the Loctite products as well ) are more successful if the the sealant is allowed to tack off prior to mating the surfaces together.

[Scouse]

Originally posted by disco95
Funny, today there wasn't a drop under the vehicle. (At least not where the TC was). :roll:When a Land Rover stops leaking, you know it's out of oil & it's time to refill https://www.aulro.com/afvb/ .

My Range Rover has a couple of leaks but a decent run on a dirt road usually seals (or soaks) them up :wink: .

Interestingly, it's mainly the city cars that have oil leak complaints through here. The country cars are usually pretty dry underneath from the dirt roads sealing/soaking the leaks up.

[Moses]

Two products I always used to use:

Gasket Goo - has never let me down. Super Crap (SuperCheap) still sell it. It's a mongrel to get off your fingers though...
Blue Hylomar - Used it in the Navy. Haven't seen it in auto shops for years so I'm not sure if this stuff is still available.

I always carry a tube of Gasket Goo in the tool kit.

[p38arover]

Originally posted by Moses
Two products I always used to use:

Gasket Goo - has never let me down. Super Crap (SuperCheap) still sell it. It's a mongrel to get off your fingers though...
Blue Hylomar - Used it in the Navy. Haven't seen it in auto shops for years so I'm not sure if this stuff is still available.

I always carry a tube of Gasket Goo in the tool kit.

Hylomar is still available in AutoOne - that's where I buy it.

Ron

[Moses]

Originally posted by p38arover+--><div class='quotetop'>QUOTE(p38arover)</div><div class='quotemain'><!--QuoteBegin-Moses
Two products I always used to use:

Gasket Goo - has never let me down. Super Crap (SuperCheap) still sell it. It's a mongrel to get off your fingers though...
Blue Hylomar - Used it in the Navy. Haven't seen it in auto shops for years so I'm not sure if this stuff is still available.

I always carry a tube of Gasket Goo in the tool kit.

Hylomar is still available in AutoOne - that's where I buy it.

Ron[/b][/quote]


Ewebeuddy!!! I can still get the stuff!! I'll have to nip out and grab some. Thanks for that https://www.aulro.com/afvb/

[p38arover]

Originally posted by Moses
Ewebeuddy!!! I can still get the stuff!! I'll have to nip out and grab some. Thanks for that https://www.aulro.com/afvb/

Umm, the shops are closed. You'd better wait until tomorrow.

Oh, it's made by Permatex/Loctite.

Ron

[DEFENDERZOOK]

<span style="color:blue">hylomar is the best stuff to use on cooling system gaskets.....
and it comes appart easy when it has to.......</span>

[disco95]

O.K. guys, so I drove Rosemary ito the garage today to have a bit of a check over before next saturdays jaunt. Now I hadn't driven anywhere prior so she was cold.
The vehicle was in the garage for pretty much most of the day as I also had a go at sorting a little electrical gremli I've had with the driving lights.
Now....when I'd mfinished there was not a drop of oil on the garage floor (at least not from the TC).
Does it leak oil after a 20 - 25 minute trip because the oil's thinner i.e warmer, or is there another explanation :?