Welcome to the Z. Haven't worked on the diesel, but have done a lot of water pumps on gassers, they are usually pretty straight forward. Hardest part is getting the fan off if its a clutch fan. Just have to wedge something in to hold the pump shaft still while you unbolt the fan. Same with putting it back on the new pump.
We have a lot of forums for all kinds of topics, so you shouldn't have any problems finding a place to post questions.
We LOVE pics of Rams.
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