Bottom aux belt pulley removal

[Niall]

i wouldnt use the pin to undo the bolt as you risk delaminating the pulley
which will feck you up when you come to retime the engine as that is the only crank lock point

i would tend to use the teeth on the flywheel to lock the crank

How to you lock the crank with the flywheel? Does it involve dropping the gearbox off?

No there is an inspection cover in the top of the gear box directly above the fly wheel which is ideal for sticking a prybar in, get a mate to hold that whilst you undo the crank pulley.