Remove the drive belt, undo the three bolts on the pump pulley, remove pully, remove rubber water pipe, undo the three bolts for the pump, remove pump, clean engine mounting side of old gasket, fit new pump with gasket and some gasket glue tighten bolts to 10Nm, refit water pipe, refit pulley tighten bolts to 12Nm refit drive belt, refill water system with a 50/50 water/anti-freeze mix.
You might have to remove other items to get good access to the pump depending on the year and other equipment fitted.
nigel, December 2011
