The book time for the cambelt is 3.5hrs and the waterpump is 4.4hrs as the waterpump is driven by the cambelt your looking at 4.4hrs, the splash shield under the right wheel arch does have to be removed.
If you want a printout of how to do it contact me on nige110162(at symbol)hotmail.co.uk and I'll mail you a copy
nigel
December 2011