ST2 Lister camshaft is retained by thrust bushings at front gear cover and engine block. Remove gear cover and you will see the cam gear. Remove governor assembly, withdraw fuel pumps and tappets, remove oil pump (out of bottom of block), remove pushrods and withdraw their tappets to top of bores... (best done with engine block laid on side). Cam will withdraw out front of engine. Check if fuel lift pump tappet is installed - remove if it is there.
dieselgman