Re: Crank Pulley


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Posted by David Sherman [72.47.9.228] on Tuesday, January 04, 2011 at 15:08:17 :

In Reply to: Crank Pulley posted by Will (in IL) [98.215.26.138] on Tuesday, January 04, 2011 at 14:57:57 :

The military crank pulley is bigger than the civilian one and is constructed with a separate hub which makes it easier to remove. I would swap you a civilian one for your military one if you were close by. I'm sure someone will have one. Actually I would swap you lots of parts off of your military 230 if you didn't want them. I first discovered the difference in crank pulleys when I went back to the original military generator on one truck and the "correct" fan belt was too loose. That's when I figured out it had a civilian crank pulley. It was probably a civilian engine, but when I bought the truck I thought it was stock military because it had the military air intake and ignition systems on it. I believe the military version used a larger crank pulley in order to either spin the generator faster, which it definitely needs, or spin the water pump faster for better cooling in desert operations, or both. I was not aware that the military pulley wouldn't clear the frame of a civilian truck.

I'm not sure what the original civilian generator was and how its pulley diameter compares to that of the standard military 25 amp generator. The they are comparable electrically, then I would expect the civilian one to have a smaller generator pulley as well as a smaller crank pulley.



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