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The 0-25V one wouldn't be appropriate for an MV, because the electrical system should be at around 28V while the engine is running. Maybe one of these aircraft gauges will work? Voltmeters from Aircraft Spruce

I don't know if I can make it on a weekday, since I'm hoarding vacation days for my usual vacation in May. But, I'm interested in another boneyard trip if I can fit it in! :jumpin:

Those rim cross-section drawings are great! Thank you! :jumpin: Now, here's my dumb question: Are the "combat rims" pictured the ones that would be used on an M923A1? I ask because I'm getting my first M923 soon, and I'm considering whether I'd like to convert it to an A1. I've been reading all...

I would recommend using a 24V to 12V converter. It would naturally need to be turned off when not in use to avoid draining the batteries. If you would be satisfied with it only running when the truck is running, then it would be simple to switch its power with a 24V relay operated by the master...

The batteries are wired in series to make 24V. Voltages add when they are connected in series, and currents add when they are connected in parallel. In case you're not clear on the difference between voltage and current, I'll make a garden hose analogy: Voltage is the electrical equivalent to...

Gen 2 is a 12V generator, with its positive side connected to the 24V bus, and its negative side connected to the 12V bus at the junction between the batteries. So, it is not outputting 24V with respect to the chassis ground; it's outputting another 12V above the 12V bus. If the lower battery...

I should add that in the CUCV, if one alternator isn't working, its associated battery will not get charged at all. The two batteries are charged independently by the two alternators.

In the CUCV, one 12V alternator charges the lower 12V battery, and the other 12V alternator charges the upper 12V battery. This is distinctly different than in most other military vehicles, where a single 24V alternator charges both batteries at the same time as if they were a single 24V battery.

The original alternators in the CUCV are 12V units, so a single one of them cannot charge both batteries in a 24V system. I haven't had hands on a CUCV ambulance before, but if I was in your shoes, my first impulse would be to look for the brackets and other hardware that the ambulances use to...

Where did you find the mil-spec wire? I've been using silicone rubber machine tool wire from my favorite industrial supplier. It's fairly close to the wire in my later-model trucks, but the insulation is a bit thicker, so it's hard to get into the Packard boots.

Very nice! I like how you use the proper circuit breakers, Packard connectors, and Packard Y adapters. Nice and neat. [thumbzup]

Is this it? I previewed this in Barstow back in 8/2008. Most of them had the Palfingers, but a few had the Groves. I didn't take very good pics, though. I wanted to get one of the Palfinger-equipped trailers to use the crane, but I accidentally bought four CUCVs in the previous sale and blew my...

I hear those Air Force types eat with forks, too! :D

Congratulations on passing your test! Assuming that you mean a more modern military radio operating in the same band as the RT-524, then that would be a SINCGARS unit. It's meant to work with a different antenna, though the AS-1729 will probably work if you manually tune the knob on the bottom...

tennmogger is correct about that mount being intended for the MX-6707 and other bolt-compatible bases. That style of mount is used on many trucks, including deuces. It's commonly called the "sugar scoop mount", though that term doesn't appear in TMs. It's a different style of mount than the ones...

I added the quick-release coupling to my truck many years ago. There was an MWO for it, to be applied at time of belt replacement to make later replacements easier. If I recall correctly, I got the parts from a now-defunct HMMWV surplus parts dealer. If I had to do it again, I'd see if Kaskar...

I think I'd look into fixing it to prevent water from pooling inside the frame and rusting it out faster. The leak will just move somewhere else then, but if it ain't leaking, then the sky is empty.

My HMMWV and my M923 (which is still waiting at the GL yard in Barstow) could each use one of these. PM sent!

I'm brain-wrestling with the idea of singling out my new M923 while i'm waiting for EUC clearance. I sure like the looks of the singles on the A1 and A2, but maybe I should learn to love the wheels that come with the truck. I don't know exactly what tires are on it (yeah, I know, I played the GL...

Cool. By the time I fix everything that needs fixin' on my M543A2, maybe it'll turn into 900-series? :grd: