Fan belt has come off

I've always removed the crank bolts by using an 18" breaker bar resting against the passenger side inner wing, then turning the key to briefly engage the starter. I've yet to find one this method couldn't undo!

I'm with Busta 
Also take the plug leads off so it can't start up
And a block of wood so no damage to the inner wing

Always jammed mine against the floor not a body panel

You can just rattle it undone with a little battery windy gun if it isn't rusted solid to the pulley like mine was.

Mine wouldn't undo by flicking the bar against the chassis. I undid the 200 TDi that way to do the cam belt, but it was beautifully clean, not a rusty lump.

Facade, you are the reason why I have a 1000Nm makita rattle gun, I watched the suffering live and thought I'd rather like to be prepared if I had it to do myself!

Right an update.

Have spent a shed load of hours on this today with various degrees of success.

A number of snapped bolts on fan shroud.

A crank bolt that refuse to budge. Impact wrench, long bar, bigger bar, home made locking tool etc.. I'm too chicken to try flicking the starter method single handed.

Eventually (as I had a new bolt anyway) I went with the Facade angle grinder method. Although I only cut most of the way through it on two sides. That obviously released enough tension and rust as another go with the impact gun saw it spin off. Happy days.

Also spent far too long removing the alternator, but I wanted to clean it up and free up all the bolts whilst access was good to help with adjusting the belt tensions later. I also have a new tensioner for the power steering belt to go on.

It all still in bits with the new pulley and bolt on. I'll update with some pictures when I've finished later this week.

What is the correct torque figure for the pully bolt? (VVT engine)

I can find references to a number of different figures from 76 all the way up to 110 lbs/ft.