guess you already have the top half off?, to remove the bottom section, you need to remove the crank and intermediete pulley wheels held on by 4 and 3 5mm allen head bolts. After that i believe there's 2 10mm head nuts to remove and thats it. Before you remove the cambelt, use some tipex to mark the position of all 3 pulleys as the notches on the pulleys your supposed to go by are not always correct as i found out when i replaced the belt on a 1.8 pb engine.