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Gearbox Oil Leak LT230T and LT85

Tech Talk for Rover owners.

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Gearbox Oil Leak LT230T and LT85

Post by Escargone »

I have just had my LT85 Gearbox rebuilt and new seals fitted to the LT230 transfer box as it was leaking big time.

Unforunately I still have a leak that shows up after as little as 20 km's.

Most of the oil is coming from the Transfer case, but a little is from the gearbox. The leak shows up on the mating faces between the gearbox and transfer case (input side of the transfer case).

As all the seals are new is this a sign that the job has been botched or could it be caused by a blocked breather ?

Any other ideas ?

Thanks

Al :?
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Post by KiwiBacon »

It's easy to screw up the input seal when you're bolting the T-case back to the gearbox.

Can you identify which oil it is that's leaking out?
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Post by Escargone »

Thanks for the reply.

The transfer case has a pink oil (redline) and the gearbox is filled with a Blue oil.

Most of the leaking oil is pink (transfer case) but there is a small amount of the blue (gearbox) oil.

Al
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Post by ISUZUROVER »

KiwiBacon wrote:It's easy to screw up the input seal when you're bolting the T-case back to the gearbox.

Can you identify which oil it is that's leaking out?
What KB said - best way is to slide the seal over the mainshaft, line the t-case up, then fit the seal just before the t-case is mated to the box.
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Post by gali »

Well, you should be careful because if you are NOT in-line between the transfer case & the transmission the output shaft of the transmission will damage the seal again.
The best is to use a transmission lift so you can know all the time that you stays in-line. Or to be vary vary careful at the matching.

Wishes you the best luck

Gali.
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Post by gali »

or...you can take a look on the web site: http://forums.lr4x4.com/index.php?showtopic=6024
it shows what you can do by your self, actualy it looks quite good.
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Simple when you know how

Post by Escargone »

Looks like a simple way to get it right.

Thanks for the advice.

Al
1986 County 110
Isuzu 4BD1T & Diesel Gas Fumigation
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Post by ISUZUROVER »

gali wrote:or...you can take a look on the web site: http://forums.lr4x4.com/index.php?showtopic=6024
it shows what you can do by your self, actualy it looks quite good.
That is a GREAT idea!!!
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Post by gali »

No prob.
all the credit should go to white90.

keep having fun out there.
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Post by tony cordell »

as an aside I'd wager it is actually leaking from the intermediate gear shaft
there are 2 o rings that i've in and allow the oil oil
I put RTV over the end to stop it
a pic of this can be seen here:
http://www.ashcroft-transmissions.co.uk ... e_230a.jpg

to the left of the main shaft seal the RTV can be seen
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Post by Escargone »

It turned out to be the O ring seal - was torn when fitting the shaft and a small piece had been carried through to the gearbox seal allowing it to leak as well.

All fixed now and ready to head bush again.

Al ;)
1986 County 110
Isuzu 4BD1T & Diesel Gas Fumigation
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