Automatic gearbox

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Pedro the fishy man

New Member
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8
Location
Cheshire
Range Rover L322 td6 55. Plate Broke down the next day after collecting it after having the gearbox rebuilt for the second time to be told it’s a sealed unit at the back of the box with planetary gears in that has broken.The second time it was (fixed) was a bearing on the torque converter that broke sending bits into the box.What I would like to know what is the sealed unit called please
 
Are they talking about the transfer box?
I wouldn't have thought that's sealed unit.

But ask then to point it out to you in a drawing.

J
 
Smells "fishy" doesn't it @Pedro the fishy man ?
Who is doing these rebuilds? Are they competent? What guarantees did they give? Why did you choose them? Were they recommended?
I've only ever had a rebuild done once and it was £1300 (including a TC rebuild) and the box never failed again. :)
 
+1 in incompetence. The "sealed for life" is a manufacturer thing, and really means they assume the car's life is 10 years or 100k miles. Contact Ashcroft & ask them.
 
...to be told it’s a sealed unit at the back of the box with planetary gears in that has broken.....What I would like to know what is the sealed unit called please
Presumably they’re referring to the planetary assembly, which is a ‘sealed unit’ in as much as the planet pins are pressed into the carrier and it therefore can’t be disassembled.

Planetary_with_Annulus.JPG


Planetary_epicyclic.jpg


5L40-E_Epicyclic.jpg


Phil
 
I’d be surprised if you could find a new one for sale, and if you did it would be phenomenally expensive. Ideally you would have to replace the two annulus gears as well, because they bed-in to the micro-geometry of the meshing gears over tens of thousands of miles (noise issue).

Epicyclic failures are unusual in the 5L40-E, and transmissions which have failed (for a different reason) are readily available on eBay for £200 or so. That would therefore be my suggested source of a replacement.

5L40-E_zpsprh1duvw.jpg


Phil
 
I’d be surprised if you could find a new one for sale, and if you did it would be phenomenally expensive. Ideally you would have to replace the two annulus gears as well, because they bed-in to the micro-geometry of the meshing gears over tens of thousands of miles (noise issue).

Epicyclic failures are unusual in the 5L40-E, and transmissions which have failed (for a different reason) are readily available on eBay for £200 or so. That would therefore be my suggested source of a replacement.

5L40-E_zpsprh1duvw.jpg


Phil
Thankyou very much you have been most helpful
 
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