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Probably SGT MORENO, a common Spanish surname. Looks like that name is bleed-through.

Any impact on mileage? Did you correct the speedometer?

This is a control issue, check voltage on the #1 and #2 terminals on the alternators. Then trace to the diode on the cab side. Use the diode check on your voltmeter, you know how to check a diode, right? Remove it from the circuit, then check for continuity using the red voltmeter lead to the...

If the differentials are quiet, let them be. Lot of money and work is correct. If you get one axle done correctly, it is a 3 day weekend of 10 hour days. If you just slap it together, chances are the gears will grind themselves to dust. Still want to drop the RPMs? Either add-on overdrive...

Dana 60 front, GM 14 bolt rear. 4.56:1, you could go to 4.11:1, 3.73:1 or even 3.54:1. But for the rear Corporate 14 bolt, you will need a new carrier since 4.56:1 is as high (low numerically) as you can go. Expensive swap. Now you could go for an add-on overdrive kit. About the same cost...

This must be because of additional hydraulic consumers. I have replaced these pumps on other vehicles with never a bleeding issue, other than foam. If you are in a hurry, you could siphon off the foam, replacing with fresh PS hydraulic oil. Foamed PS oil takes forever to settle.

Check grounds/interconnects. If there is a problem with grounds, the alternate current loop will cause the regulators to act funny. Remove the connections, clean with wire brush and then reassemble, coating with anti-oxidant grease to protect the raw metal surfaces.

One way to measure alternator output is with a clamp-on inductive meter, these aren't cheap but is the easiest. The other way is with an ammeter. A big one, 100 amperes. Bear in mind you must install the meter (or the shunt) in the charging series. Best bet is measure charging voltage...

What model of truck? You mention you have dual alternators with dual batteries.

There is a relay for the dash-mounted voltmeter. Check the troubleshooting in the -20 for voltage issues. Page 2-61.

Well, the glow plugs could be 24 volt models. The HMMWV uses 24 volt plugs and with the 6.2, they are otherwise identical. You can either pull one and check the part numbers or you could measure the resistance. IIRC, 12 volt plugs should be in the 6-10 ohm range, 24 volt will be 10-12. Bear...

Anything over 10 HP (5 kW) is asking for rapid belt wear. Belts, especially V-types, are inefficient and wear rapidly. As you should know. Now, there are solutions. Like PTO mounted units, although you have to figure out how to do that but it could be done. Since most AC stuff is 60 Hz, you...

Rudolph Diesel didn't design the injection system in your vehicle, period. With the aluminum case (an amphoteric metal, it acts as both an acid and base) and high alloy steel parts, all are highly reactive to the free fatty acids in waste vegetable oil. And please quit with the "heavy...

My DVM is not working too well so I borrowed an old analog meter. It is 28.5+ over both which is confirms the mid-white hash in the green. Now because the silicon controlled rectifier (the electronic "switch) in the Duvac induces some switching harmonics, some digital voltmeters will pick up...

Vacuum is a great sign of filter clogging. I would recommend a pyrometer (high temperature gauge) pre-turbo if you are going to turn the fuel up.

And that is commercial, ASTM spec biodiesel. Imagine waste vegetable oil.

TM 9-2320-289-10 for the operation manual. TM 9-2320-289-20 for the "shop" manual. You might need the -34 for the more advanced stuff, the last 2 digits are the level, -10 is operator, -20 is unit maintenance and -34 are direct support/depot. The hubs are covered in the -20.

Realize that the Brake Specific Fuel Consumption graph is only for full throttle operation. Actual BSFC "maps" have an additional axis, making them 3-d graphs. As such, you cannot determine the fuel consumption from the above referenced material unless you know the generated power.

You might get 20-50k miles running SVO. Much less if WVO. Heating the oil makes it more reactive, waste oils are VERY REACTIVE. Linseed oil, a triglyceride, hardens much faster once thermally treated. The same for WVO. All triglycerides react with metal, that is why they are good extreme...

Get a TM. Read it. Get tools. Fix it! When done right, grab a refreshing beverage and enjoy that smug feeling of success!2cents