Just got myself a diesel, and am wanting to know a few things

How do i "time" one. i need to pull the engine mount off to replace it, and from i can see the injector pump is bolted to it.

So what do i do about the cam belt? cant see any notches on cam wheel, i see one on the crank pulley but no arrow on lower casing, and i see nothing on the injector pump wheel :S and i dont want to fudge it up by removing the belt to get mount off.

Im guess its fine to undo injector lines off injectors and remove the pump as whole like that?

This engine hasnt been started in a little while, is there anything i need too know?
Never owned a diesel so need to read up on tips and tricks ect