Please read the How-To and watch these videos before working on the vehicle so as to have the knowledge to do it right.I found two very well done videos on youtube that beautifully depicts what needs to be done to do this job. It's smart to just remove the coolant lines and flush them out and then flush the radiator and engine (flush from bottom to top by inserting hose into lower portion and filling the gaps with a rag to push the water up and out).
JeepKJ Forum How-To:
http://www.jeepkj.com/forum/f202/how-in ... ump-44066/Water Pump Replacement:
https://www.youtube.com/watch?v=j9xCAXg9-5sIf you have a mechanical fan make sure you take it off before you remove the serpentine belt. I borrowed a pneumatic fan clutch install kit from the hobby shop on base but a really big wrench (bigger than 32mm or 1 1/4") and gently tap it loose with a hammer would work too.
Thermostat Replacement:
https://www.youtube.com/watch?v=Nv0HpH2ymB4If you need help getting the coolant reservoir and fan shroud and belt off please read this:
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