Rear Crank Oil Seal

Anyone got any hints on how to replace it? Engine is out of the landy and upside one atm. Undone the last main bearing, tried to remove the block that is on top of the crank and it was not moving!

Cheers

get the mains off first mate, light tap with a rubber 'ammer will do it, get the old cork whatsits out the mains and soak them in petrol or thinners , get the old oil and **** off.
the seal is dead easy ,
i did mine in two mins, rip the old one off with a screwdriver ! simples
then clean the crank with some thinners and wipe off with a rag, put the new seal over the crank ( it has a split in it ) put the split to the bottom with the spring recess facing inwards to the block / oil flicker on the crank.
put the spring round the crank, loosely, then hook the ends together,
with two small screwdriver or yer fingers , slightly stretch and pull the spring over the groove in the oil seal then push it inside the rubber bit, making sure yer carefull not to un-hook the ends or yer will have to do it again,
if yer feelin like doin a proper job, put a dab of sillicone on the ends of the oil seal as yer fit it,

cant find the pics of it being done but