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Hi guys not had my 90 series long a couple of quesations . I rolled under neath it yesterday and there is oil all over the back section. now i thought this was the transfer . Is this the case or is the transfer up the front section . I know i am going to sound dumb but anyway . Is it common for these to leak and if anyone has had a reseal how big a whole am i looking at ? ps its a manual
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2002 90 series rv6 manualy with arb winch bar -
Re: oil leaks at gearbox/transfer
Hi Wazza,
The transfer case is at the back of the transmission. You will see the Propeller shafts for both the front and rear axles connected to the transfer case.
Is there oil actually dripping, or can you just see blackish oily bits around the shaft seals?[B]Declan[/B]: [SIZE=1]1997 GXL 4.5 Auto 80 series on [B][COLOR="#FF0000"]LPG[/COLOR][/B], ARB bullbar, 2" OME lift, 32" MTZ, GME UHF, rear ARB locker, Kaymar spare wheel carrier[/SIZE]
[B]PLANNED[/B]: [SIZE=1]3 or 4" suspension lift, 2" body lift (maybe), winch, 35" MTZ + roadies, front locker, sliders, cylinder head rebuilt for [B][COLOR="#FF0000"]LPG[/COLOR][/B], Garret [COLOR="#4499ff"][B]Turbocharger[/B][/COLOR][/SIZE] -
Re: oil leaks at gearbox/transfer
I have a similar problem. After returning from Central Australia I have a very slow leak somewhere in the transfer case. I have not been able to track it down so far. It is only leaking about 50 mls every few weeks, although in the past couple of weeks has not appeared to leak at all (even though level is still okay).Michael and Kelly
[SIZE=1]1999 Prado Snowy 3.4L petrol, Ultimate Suspension 50mm lift (2013)[/SIZE][SIZE=1], BFG A/T, bull bar, winch, Twine hot water shower, home made rear drawers, Shippshape car top tent, UHF radio, tablet GPS & Navman GPS (both running OziExplorer)[/SIZE][SIZE=1], Spot 1, solar panel, second battery, inverter, Engel fridge and more[/SIZE]Comment
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Re: oil leaks at gearbox/transfer
its not the rear seal , I will have to give it a good wash its all over it . Yeah i thought the transfer was the back. To use to working on trucks haha still learning about my prado2002 90 series rv6 manualy with arb winch barComment
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Re: oil leaks at gearbox/transfer
Welcome to one of the single most annoying maintenance issues for the 90 series Prado, the damned transfer case seals.
Mine have been replaced, not including the next set to be fitted on Monday, 4 times. I cannot for the life of me work out why. Maybe there is too much stress put on the drive train, dunno. I did tow a caravan for a few years, perhaps that contributed to it. Any ideas?
But one piece of advice if you need them replaced then it must be both the internal and external seals. It takes longer and is obviously more expensive, but the gearbox and T case need to be seperated anyway. If you only do the external then you will be right back a few weeks later getting it all done again.Comment
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Re: oil leaks at gearbox/transfer
Touch wood.........hasn't happend to me yet, 310000k's and all is good.
Wizard, Has your box/tranny taken a hit, is it in perfect allignment ?97 VX Grande, with front & rear air lockers, ARB Sahara winch bar with tigers 11 winch, 2" EFS lift, 265/75/16 Achilles Desert hawk XMT, and more.
[B]Bitumen - A blatant waste of taxpayers money![/B]Comment
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Re: oil leaks at gearbox/transfer
Crooza,
I have had the car since new and it has done just over 205,000 km. First time they found it was at a service when the car was around 6 months old just after driving from Perth to Darwin. Toyota have never indicated that the T case or box are misaligned or damaged. I've looked as well and it is fine apart from the oil.
I keep asking Toyota why it keeps happening and they have no idea. Might have to get a second opinion.
The replacement of all seals seemed to fix the problem the best. The last replacement was sometime in 2007.Comment
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Re: oil leaks at gearbox/transfer
maybe there is to much weight in the transfer case for the mounting bolts to the transmission to take alone and the movement makes them prown to leaking. Any way i havent got around to sorting mine out yet I plane on doing it myself just brought a workshop manual as I have mechanical experience just not on transfer cases2002 90 series rv6 manualy with arb winch barComment
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Re: oil leaks at gearbox/transfer
Our leak was the seal to the front drive shaft. Cost of part was about $25 and labour not too bad.Michael and Kelly
[SIZE=1]1999 Prado Snowy 3.4L petrol, Ultimate Suspension 50mm lift (2013)[/SIZE][SIZE=1], BFG A/T, bull bar, winch, Twine hot water shower, home made rear drawers, Shippshape car top tent, UHF radio, tablet GPS & Navman GPS (both running OziExplorer)[/SIZE][SIZE=1], Spot 1, solar panel, second battery, inverter, Engel fridge and more[/SIZE]Comment
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Re: oil leaks at gearbox/transfer
Make that two for front output shaft of the transfer case, the guy at my local toyota parts seemed pretty familiar with the part, so make what you will of that..
The front output shaft faces forwards, obviously, and sits quite low, cops quite a bit of crap flicking up from the front tyres once the grit gets in between the stationary rubber seal and the moving steel shaft the show is over quite quickly. If you don't get the crap in ther in the first place they probably do last 300+kms....
When I replaced mine I was advised to inspect the driveshaft as if any grit has held moisture in there the shaft may be slightly corroded which will comprimise the quality of the sealing surface. If this is severe the driveshaft once cleaned up will be a slightly smaller diameter than original so the tolerance between it and the seal is now greater, more space for oil to escape. I was also told that it is a good idea to put a bit of lube (trans oil or a small amount of grease) on the seal as it relies upon the oil in the transfer case to lubricate it and if it is installed "dry" it is possible to burn, melt or wear the seal significantly when the vehicle is first driven after it being installed....
Did mine a while ago now, no oil dripping yet. I did write up a little, not great, thread on replacing it somewhere hereComment
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Re: oil leaks at gearbox/transfer
is there ment to be oil between the gearbox and transfer case or is it normaly dry in there ,I take it there would be an output shaft seal on the gearbox and another seal on the transfer case. Does the gearbox aboutput shaft slide inside the transfer case on a splined shaft or something ?2002 90 series rv6 manualy with arb winch barComment
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Re: oil leaks at gearbox/transfer
Hey Wazza,
The seal K & M McF and I are talking about is between the transfer case and the front output shaft which is the lowest rear most gear housing, if you have signs of oil up higher i.e. between the gearbox and transfer case then this seal probably isn;t the suspect as it is quite low, unless it is being thrown up off the front drive shaft when it spins.
Best way to tell is to get down and dirty under the car and clean it all up!!!Comment
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Re: oil leaks at gearbox/transfer
I was under it this morning its not the seal you guys are on about. now i noticed there is 3 section the gearbox another section and then the transfer case , or is the two front sections all the gearbox ? btw I am not including the bell housing as one of the 3 sections2002 90 series rv6 manualy with arb winch barComment
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Re: oil leaks at gearbox/transfer
just wondering if anyone can point me in the best direction to find info on changing the output shaft seals on the transfer box and if it is easy enough to do it yourself.Comment
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Re: oil leaks at gearbox/transfer
If you try searching you should find this
viewtopic.php?f=11&t=9112
Not the best how to but will give you an idea.
Good luckComment
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