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I drove through the yard yesterday. About 100 or so A1 trucks, and maybe 6-10 A2 trucks that I saw. Nothing ECV/REV. I believe that the A2 helmet top was in this past wednesday's auction; if not it's the next one as I saw it on the active page tuesday when I was buying more tent components.

So not sure if you noticed all the info at the beginning of the instructions page in the maintenance manual, but here are a couple things to pay attention to. In the yellow box it shows you all the different manuals you need to have available for accomplishing the job. The red box shows what...

Not sure if it's happening as much these days as I haven't been watching much, but in the past it wasn't uncommon for trucks or equipment to get bid up to stupid price levels, only to see it back on the auction block in a few weeks. Suspicions were that the auction company was intentionally...

The MT wear better/last longer, but trade off is they have less traction. The Baja have better traction, but wear out faster. In pretty much every category, the Baja outperform the MT hands down, except for tread life.

same story I heard. The system leaks no matter what you do, so if the truck sits a few days the tires lose pressure. It's very useful if you drive a lot and are constantly going on-road to off-road, but if you are primarily on road with little or no off roading, it's just a pain to deal with

sidewalls are strong, but the rubber is prone to cracking much earlier than the other brands under the same conditions. Theyre was also a notice put out for units to replace them at 5 years from manufacture date due to sidewall related issues. I bought a set surplus. Looked great when first...

From my understanding it's not uncommon for them to be installed using threadlocker, so applying heat to the extension would be the easiest way to release it.

They were definitely NOT all updated, as PS magazine has a page where it tells everyone that if it's one range of serial numbers, during repair it takes a 3 speed transmission and another set is for the 4 speed.

to add to the above, under the driver's side rear seat base, there should be a box with wires running to it. This is the TCM (Transmission Control Module) only found on 4 speed trucks. No TCM, no 4 speed. In the battery box area, or more accurately bolted to the outside rear of the battery...

As Tobash said, the "P" Park position on the shifter is the first giveaway. The next is having an overdrive position and then 3,2,and 1 gear spots. From the exterior of the truck, provided there isn't a winch installed or other front end modification, the front bumper will look like the picture...

As long as it's an M1097R1 with the 3 speed transmission the autozone halfshafts should work. If it has a 4 speed transmission then pretty much everything in the drivetrain is a different part number and not compatible. You can look up parts under 1992 Hummer H1 Part numbers for the shafts...

There are less aerodynamic versions of the Amtech top available also... This is just the mid height version. The tall version is about 2' taller than this one.

as Mainsail said, no matter what version you get, they are pretty gutless in comparison to your average modern civilian vehicle. The military didn't care about power/speed. They mostly just cared about what fuel it used, and if it could use parts they already had in their supply system.

diesel oil will be black no matter how many times you change it. Just the nature of the beast.

I just greased everything, including the lower ball joints, in my M1123. Can't vouch for older trucks though.

newest variant of REV trucks uses a gearbox and shaft drive for the fan that is very expensive compared to the hydraulic clutch version. The Sheppard steering box apparently is no longer made(?) and extremely expensive to replace. There are a lot of other things, like liquid cooled differential...

the non 11XX series trucks that end in A1 are 3 speeds. The 11XX series reset the system by being enough different to warrant new designations. The R1 trucks don't match the standard numbering system for all the other trucks for some stupid reason.

That's how it's supposed to be adjusted; loosen switch mount bolts and slide the switch one way or the other. The holes for the mounting bolts should be more like slots in which you slide the switch to adjust it. I was along side the road during a convoy stop (we did a non-air brake vehicles...

different set of serial numbers than what they were manufactured with. Many of the R1 trucks are A1 base models with 3 speeds, others are A2 trucks with the 4 speed. https://www.psmagazine.army.mil/News/Article/2493071/m1097r1-hmmwv-order-transmissions-by-serial-number/ If your unit has the...

mine I just used a large pair of pliers and bent the "Z" rod until the lights worked properly.