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I checked, and the MIL standard that spec's all the air conditioners is MIL-A-52767. There is also a lot of info in MIL-HDBK-116 about Environmental Control Units (what we folks call air conditioners)

I forgot to mention - the shelters don't fit a 3/4 ton trailer - they're a few inches too wide. Some folks have taken an M101 trailer and changed the axle then moved the wheel fenders out a bit. The 1 1/2 ton generator trailers seem to work the best--- low to the ground, flat, and fairly available.

Is it a window sized AC, or is vertical? The 6000 BTU ACs are about 17" x 17" x 30" high. You wouldn't believe how much stuff they have crammed into the ACs - they are darn near impossible to work on without the manual. When the Army designed the ACs, they went wild with every bell and whistle...

The basic TM for your shelter would be TM 10-5411-205-13. There weren't many S250 shelters with an AC - if it's mounted next to the doorway, its probably a 6000 BTU AC. These were built by at least 3 different companies, and all to the Army's design, so there are very few differences between...

The old 466 is on a par with the 6-71----many, many of them were made, parts are available, durable as a brick, and run forever. Parts are also a lot easier to track down than anything for a Continental.

Thankfully, the old M-series manuals were written to be understood by mechanics. Most of today's manuals aren't nearly as clearly written, and the illustrations leave a lot to be desired.

If you start parting it out, the exhaust manifold is getting real hard to find - don't throw it in the scrap pile until you see if anyone needs one.

In WWII, England also used many wood gas fueled vehicles, from cars to trucks and even at least one fire engine. Another option was coal gas from the city gas mains - this was stored in large roof-mounted gas bags that were filled at night. Unfortunately, this increased the height of the buses...

Very nicely done! By having this kind of adapter available, it's easy to use for you, and if you ever let someone else use it, they have a pretty good chance of success as well.

Remember, these were designed for low octane military gasoline - not the stuff we have now. If there is ever any ethanol in your gas, it will clean out the system, and you might have some dirt in a jet. I usually wind up installing an in-line gas filter a few inches in front of the carb on any...

Check the LO and you'll see that they dion't need a lot of oil - If you install an air-tool lubricator, be sure you can really pinch down its oil feed rate, and plan on checking it from time to time. An M35 vibrates a lot more than an oiler designed for wall mounting was designed for, and it...

"Stealing" the engine and transmission out of a junkyard 211 doesn't make any sense - unless the FD re-engined the truck with a different power train. The junkyard might have bought the truck on a bid and never opened the hood to see if it even had an engine..... Lots of volunteer FDs used the...

Back when I had a mule, I'd add some Alemite CD-2 oil addative to free up the lifters, then run it for a few hours normally, then change the oil. I didn't add any CD-2 unless I started hearing valves again.

It also depends where you will be driving. Probably the best engine for world-wide parts availability and repairs is the old 6-71. They were used in WWII, and they are everywhere you look. They aren't the most efficient, they aren't the quietest, but they are durable if you keep the speed down...

You can also check with McMaster-Carr (www.mcmaster.com) in Chicago - that's where I got mine.

I store my S250 on a pair of mover's dollies - that way, I can easily push it around the shop when I need to. They are the easiest and lightest system I could find.

There would be enough variance from fuel tanks that a set of lifting shackles wouldn't be seen if they weighed the trucks leaving the site - not to mention fat drivers versus skinny drivers

A Stuart is about the most practical tank for a collector - IF you can fit into it. As we get older, the hatches shrink a little, and the Stuart is a tight fit unless you're an 18 year old kid. None of the tanks are roomy, but the Stuart reminds us that people were shorter in WWII

Engine parts for the GMC are fairly common - Bryan Asbury in Canada or Memphis Truck & Equipment would probably have most of what you need. Don't rule out a junkyard - if they have any GMCs, engine parts should be very reasonable since they don't have a lot fo call for GMC parts. The radiator...

Its always amazing how many WWII trucks there atill are out there - and even more in Europe. You have the advantage that the CCKW is a fairly straightforward truck with nothing very unusual to deal with. The only challenge will be finding sheet metal parts, but there are still a lot of them out...