I was talking to my Dad this weekend about the M37. He was a paratrooper in the Army in the early 50's and remembers the truck fairly well. He got to mentioning how the winch worked and I didn't understand. He said the winch speed was determined by what gear the transmission was in....meaning if you wanted to winch slowly you had the trans in first gear. Faster winching in second, etc, etc. But I don't understand how the transmission can be in any gear other than neutral and not have the truck move. Does engaging the winch lever next to your leg somehow disengage the transmission from the driveshaft to the transfer case? My M37 doesn't have a winch......or I'd be outside playing right now. )
The m-37 came with the Lu-4 winch and the pto ran off the trans. This means it runs off the input shaft and it goes off the engine speed. Some trucks like the power giant with the Lu-2 winch was run through a pto off the transfer case. This means if you put the transfer case in neutral, you could use the gears of the transmission to speed up the winch. The only way you could use the transmission gears to run the winch, it would have to be run off the transfer case. It would also need to have a different transfer case because the np200 transfer case on the m37 did not have a hookup for a pto that I am aware of. Hope this helps.
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