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I am getting ready to add a 6000 BTU MIL air conditioner to my S-250 shelter. This means that I need to cut a hole on the hinge side of the door, and install whatever hardware is required to hang the AC. I've seen the hardware on other shelters at Iola, and I've taken photos and measurements...

Painter's naptha thinner also works well - its second cousin to mineral spirits, except it is a little better solvent and evaporates faster.

You could look at different engines, trans, axles, etc---and the end result would be a cobbled mess that no one would ever want to fix, drive, or buy. Likewise with doing a cab-ectomy. Nothing will fit without modifications, and you will be trading straightforward maintenance projects that need...

An S318 & an S318 are very similar - an S250 is 86 7/8" LOA X 79 5/16" wide, while an S318 is 77" LOA X 70 1/2" wide. That's why the 318 fits an M37, and the 250 sticks out. The photos of my S250 were a little challenging - I have a kid changing apartments, and the garage is fuller than normal...

That's an S-250. I have an identical shelter in my garage. All the exterior pieces are identical, except the unit in your photos is missing the power / phone input panel and the exhaust fan / fan shroud. The S250 is actually a little long for the M37, but it fits the 715 perfectly.

The old military product for this was tradenamed CANVAK - it was a blend of mineral spirits, waxes, green dye, and a mildew preventer. Look for a surplus store that's been around for a while, or a tent repair company for something similar - high end camping suppliers won't know what you are...

Recon is right - unless you're careful, you'll be inside a microwave oven. The good news is that the S280 is already designed for RF, and I think that you can add RF fingers to the door weatherstriping (like the S250). You might want to pick up some DANGER flagging tape so visitors will keep a...

There were versions of the crane available for trucks as small as an M37. The front two stiff legs were braced by a cable that ran back to the pintle. The cranes worked well, particularly if you doubled the cable with a snatch block to slow the winch speed. The biggest problem is that the final...

Avoid play sand like the plague - it's straight silica sand, and if it's beach sand, it won't blast worth a hoot since the waves have tumbled it around and dulled the corners. You need to buy sandblasting sand - most blasters around here use Black Beauty - it's made from foundry slag, so it's...

He's right - ypu don't want to learn how to blast sheetmetal using your own truck for experiments. If you really really want to do it yourself, buy some junk doors from a scrap yard to learn on. Consider hiring someone, though - by the time you buy sand (Black Beauty foundry slag or similar) it...

One thing to remember if you want to cruise at anything over about 45 MPH is that the military usually doesn't balance tires, and higher speeds can become real exciting if the tires are out of balance. I took my front tires in for balancing, and they came back with about a pound of weight on...

One spot that can be overlooked is brake fluid - If the truck was converted from DOT 3 to DOT 5 brake fluid, the changeover HAS to include flushing the system with alcohol since DOT 3 & DOT 5 are not compatible. If the two are both in the same system, you can bleed and bleed the brakes and...

One trick I've seen is buying a canopy to use for an outdoor spray booth - It keeps the sun off you and your project, and a sudden rainstorm won't destroy your fresh paint. It might be worth picking up some tarps that can be used for canopy sides as well.

One thing to watch for is the Holley carbs were also used in an APC (M59, if my memory is right), and that some of these APC carbs show up as surplus from time to time (same carb, same number). If you put one of these carbs on your truck, be sure that the accelerator pump is set correctly - the...

The one at the Fort Snelling Museum might still be there -- for a little while longer. The 88th has closed the museum as a cost saving action, and equipment is being moved to other Army museums and to other locations.

An M37 is very collectible, and fun to drive. Engine parts are easy to find, but body parts rust away and are gone forever. The gauges and wiring are fairly common to that era, but the old style Douglas wire connectors are getting hard to track down at a reasonable price. Any M37 with a winch is...

Another option is one of the 3M emblem mounting tapes. These double-sided tapes have a thin foam core so they can conform to less-than-perfect surfaces. Check with a auto parts supplier that also sells body shop supplies, and they can point you in the right direction. For mine, I wiped the...

I wanted more headroom in my 135, so I measured and installed slip-on extenders on the steel cargo box bow risers - I was able to raise the headroom by 3", and still had plenty of canvas to tie down.

The AIR PAC is the same for the M135.

That's a thought - it might be a lot easier to adapt a modern compressor, like one from an M35, than to build one. Also check out Haldex (used to be Midland) at http://www.haldex.com/en/North-America/ - they probably supply 90%+ of the compressors used on modern air brake equipped trucks. A...