spring loaded tensioner pulley

[phartuk]

Hi, got in my berlingo 2,0 hdi 2004 yesterday and went to move off but steering was stiff, checked under the bonnet and the belt had come off, checked further and the spring loaded tensioner pulley had disintegrated but still in place, tried to get it off, it is loose but won,t come off, how big a job is this to replace

[dwr400]

Its not a big job, but some precedures must be followed when installing new serpentine belt and tensioners.