Thread: Disco 3/4 Automatic Transmission FAQ - 6 Speed

Thanks for that - great stuff - certainly explains why the sump has to come off.

Now I have to decide whether to change my seal or leave things as they are. It is not leaking and in theory should at least stay that way unless the wiring and seal are tinkered with - yes I know they have a reputation for leaking. Also in my experience if you replace an old serviceable part with a new one for the sake of it Mr Murphy often comes along and the new bit plays up.

As the steel sump can be "relatively" easily removed, I an leaning to not changing the sleeve and keeping the new one in the spares box.

Cheers

Garry

That’s just plain stupid Garry
Fit new one. You have it. Fit it.

Having serviced and refilled with expensive fluid why would you risk losing a heap to replace the mecha sleeve.

If it was a wear ltem like a clutch then yes I would but in the past I have found when you put in new seals there is a high chance they will leak. Its not leaking now, is not going to be disturbed so I think I will take the risk but if there is any evidence of a weep now then it will be changed.

Cheers

Garry

I'll sit in your corner garry - I'd do the same thing if it was me for pratically the same reasons as you state

Heat affected seal that will be disturbed when you drop the pan.. yeah.. I’d leave it there and shove $280 worth of fluid in there...

Mine was done last drop and no problem and will be done again this time.

Not sure why it’s disturbed when you change the pan? I didn’t go anywhere near it and mine isn’t leaking after the pan change. I too am with Gary. I’d leave it alone. It’s not like it’s going to spring a high pressure leak when it does go.

Each to their own.

The seal has been subjected to time and heat... I’m a firm believer in preventative rather than reactive maintenance.

If it hasn't leaked with the amount of kms currently on your car, the probability that the new one will work is less than your current one. Simples.