[RedEagleEX]

I am not too sure about where you will need to apply the heat to the Water Pump as I am not that far into a similar project. (My tool used to remove the water pump won't arrive until Friday)

However I read that it is important to use the Engine Coolant Tablets (I believe 3 of them) as well as using Dex-Cool (which you can find at your local Fred Meyers or a automotive place) when refilling on engine coolant.

Others will argue though that it isn't necessary to use the Engien Coolant Tablets as it turns the liquid all mirky and such so its really up to you if you want to use it or not. (I myself will use it just because it says so in the manual and read from earlier posts that it saves a lot of trouble later on some how.)