Once you've got the outer stuff off...
(and you've taken off the mount - doh!)
You can turn the gear box arse up onto its bell housing part and remove the output flange nut
Here you need to drill away the peening and then get a 30mm deep socket a grolly bar and a lump of wood to stop the shaft from turning (wedged just so)...
You can now start to remove the end cover - there are long bolts that go from the cover through a second mini casing into the big one. These are simple enough to remove but when you try and take the end cover off you'll drag the whole gear set with it - persist in doing this and you'll probably break something.
So you need to remove the little screws on the side of the casing here
and here
