74M35A2
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Would have to start with the criteria of which the military disposes of equipment. I'm not certain, but I believe it to be either once a specific age is reached, or once the investment of maintenance and repair has reached 50% of the initial cost of the piece of equipment, it is then disposed of via scrap or liquidation (auction). From a reliability and financial perspective, it is simply just formula based.
Separately, as a hobbiest engine rebuilder, I'm kind of picky and personally judge any piece of equipment more than 10 years old to be tired. Even if the mechanicals are within spec (leak down, etc....), gaskets and seals don't age well in oxygen and heat/cool cycles over time, before needing to be refreshed. If the engine had a rehab in less than 10 years, and low hours since, then it should be good. Then we move to the fuel pumps and voltage regulator being x years old, etc...., and we find ourself back in the above equation.
I really enjoy my M925A2, but people really get excited when I say this stuff is tired, but yes it is 25 years old (said truck). It is tired, and I'm glad it is not on our front lines advancing. So, it comes down to, why did the military not want each sold generator anymore?
Separately, as a hobbiest engine rebuilder, I'm kind of picky and personally judge any piece of equipment more than 10 years old to be tired. Even if the mechanicals are within spec (leak down, etc....), gaskets and seals don't age well in oxygen and heat/cool cycles over time, before needing to be refreshed. If the engine had a rehab in less than 10 years, and low hours since, then it should be good. Then we move to the fuel pumps and voltage regulator being x years old, etc...., and we find ourself back in the above equation.
I really enjoy my M925A2, but people really get excited when I say this stuff is tired, but yes it is 25 years old (said truck). It is tired, and I'm glad it is not on our front lines advancing. So, it comes down to, why did the military not want each sold generator anymore?
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