It is so you do not get the clutch wet and lose drive.
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It is so you do not get the clutch wet and lose drive.
Not sure you'd lose drive if the clutch got wet.
The wading plug is to let oil out (which would cause you to lose drive if the clutch plate got covered). If crossing clean water then probably no need to install it but playing in muddy bog holes it would be an idea to install it so the clutch & throwout bearing doesn't get covered in mud/grit.
On the 300TDi there is also a tapped hole at the bottom of the cambelt housing. Leave it out so oil doesn't build up and install it if playing in mud holes. It's higher than the bell housing so you need to be in quite deep before a plug is needed.
Years back I did the Crooked River Track down Dargo way.....28 (from memory) river crossings but clean water so didn't bother with the wading plug. It was an organised Land Rover trip and nobody had any issues although most were probably auto rather than manual.....
Colin
You do. If you disengage the clutch while it is submerged in water you will lose drive. That is the point of the wading plug. To keep water out of the bellhousing when wading.