1994 Nissan Pathfinder How do you take off the water pump?

Hi, I am changing my water pump due to it making a noise while the car is running and I can't get to all the bolts. Do you have to take most of the stuff off around it? Is there a step by step manual or websit that can show me how to do this. I am normally good with this sort of stuff but there seems to be a lot of guards etc around the water pump and I need a bit of instruction. Thanks Chris