Inspector1, can you mention a little more about the kit? The model you ordered, any extra parts needed outside of the kit, how the install went and first impressions? Thanks!
The kit is a Cold Master 4500. The kit came uninstalled with my HMMWV purchase. I was told by the seller that the kit did not come with the 5 groove pully or, from what I understand, the compressor bracket. These items were also included by the seller with my purchase.
I had received two bids from two different automotive shops. First bid $4,000. Second bid for $3800. I chose to save the labor charge and take on the job myself. I took two weeks vacation . The 1st week dedicated to the HMMWV.
I know that some people can complete the job without having to remove the "Stack". ( Transmission Cooler/ Oil Cooler and Radiator ) My hands are the size of a football so I had to remove the "Stack", both left and right "Splash Guards", and disconnect the hood to raise it up vertically. (Did not have to remove the hood just disconnect the support arm ).
I observed a very minor oil leak at the water pump backing plate so I chose to replace both the water pump gasket as well as the backing plate gasket. I also replaced all the radiator hoses while I had everything apart.
There is a really good You tube video by "Dakota Woods" on the installation of the Cold Master System in the HMMWV. I had to figure some things out on my own but between Kit instructions and You Tube along with a very Informative HMMWV community, I was able to complete the job. No specialty tools needed. Air impact wrench will come in handy. A can of Blaster penetrating oil and a 2' cheater bar came in real handy on the 31 year old bolts. Start to finish was 5 days. I'm sure if you wanted to you could complete the job in 3 days. I enjoyed taking my time and learn about the different aspects of the engine.
It's been 100 degrees here in Texas all week. It is a very impressive unit in its ability to cool off the inside of the cab and keep it cool in regard to the searing heat.
Any other information that I can provide feel free to reach out.