Following this thread is inspiring me to work on my M1009, it has been a very reliable driver for years. But what I have found is lots of little things are beginning to add up. Sharing what I am doing on this site helps, I posted a picture of a nut that was loose on my power steering bracket taken with my phone. I held the phone up by the radiator to get enough distance to focus and kind of "snapped a blind" shot. Anyway I felt the picture showed the nut I found loose, but it also showed a missing bolt on the water pump under the sheave that I couldn't see from any angle because I couldn't get my head in that small a space. I was only looking at the nut in the picture but "cucvrus" mentioned the missing bolt so I was able to correct that issue. I appreciate the approach of returning things to stock when possible, these vehicles were abused while in service with the military and survived 25 to 30 years to be sold to the public. If the original design can last under those conditions, perhaps repairing them with that in mind is the best place to start. That being said, I am as guilty as anyone in making changes but before I do, I want to know how the original system worked and if it failed, why, how long did it last before failing? If it's not broke, why "fix" it?