Leak from bell housing or sump?

My first post here, hello all, hopefully this is an easy one you...

I've got an '03 Td5 110 Defender. I just discovered a new leak this morning:



Is this oil that has collected in the bell housing leaking out, or is it leaking from the sump, I can't quite make out the assembly by looking at the workshop manual.

If it's oil from the bell housing, how could it have got there?

Can someone confirm that the two square-slot-headed bolts are the bell housing wading plugs? If so - I want to undo them and see what comes out.

Thanks in advance!

You'd be safe to remove the wade plugs. Either the two square-head or the one in the bottom right of the above picture (on the bell housing, believe it's a 13 or 14mm).

If oil pours out of either of them, you'll need a new rear crank seal. Or if you have an inspection camera, poke it in the bell housing to look around.

Thanks for the reply.

Took out the lower centre plug this morning - thankfully oil didn't pour out.

Looking inside the hole - the left hand side of the bell housing interior was bone dry, the right hand side was oily - not loads but definitely wet. What is on this side that it could have come from? Actually the outside of the housing is covered in oily engine-cheese from a leak higher up, possibly the rocker cover - is it possible this is getting from the outside in?

Cheers!

Could be from the rocker cover (highly likely); or even the FPR. The gaskets occasionally need replacing on both and could give you a wet clutch.