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It's probably the aneroid valve, but fixing that is not in my skill set. Google "repair Cummins PT aneroid valve AFC valve"

In the intake manifold after the turbocharger. There is a tee fitting to install a gauge on the drivers side of the engine. Sounds like your PT pump needs to go in for it's $500 overhaul. Again, the boost pressure will tell the story.

Put a boost gauge on her, that will tell the story. Should be 20 psi or more. Sounds like you have zero. A 920 is the exact same engine.

My 915A1 will spin tires trying to pull a immobile object so I suspect you have PT pump problems.

You are saying with full throttle in first gear the transmission was fully stalled? Truck would not move and trans temp starting to peg?

PTO nuts are 9/16". You need combination wrenches for this. A catch pan for the oil. Vise grips for the studs.

Sounds like the famous M37 vapor lock. Or flooding due to stuck needle. To eliminate these, run a rubber hose from pump to carb and put a inline filter right before the carb. Route the hose away from the manifold.

7 mpg is what others are getting with these. Not very impressive I know.

30 PSI is way to low. Either the engine's valves are massively misadjusted, or they are corroded under the seats.

Yes, AMG called it "brake throttle modulation", basically you power brake momentarily to lock the diffs.

Personally, I wouldn't risk hooking it back up. Once electronics screws up like that, it will either do it again immediately or do it later randomly. Each time you risk frying expensive components.

NAPA has many many sizes, you will need the ID of the end of the hub.

Yes that is the correct p/n for the 114/117 unit. If you have parts for the inside of this, those are pretty much a dead item.

The 116 and 114 have a cross drive transmission which is separate from the GM 4 speed mounted to the 283.

It takes the 301MG or 303M, I forget which. Same as 114 carrier. Do you need one?

Its not so much a Goodyear vs Michelin preference, the issue is that Michelin has not made a 11.00-20 for Uncle in over 20 years, which is quite old for a high speed truck tire. The G177s are much newer.

Those Michelin Xs are WAY past their prime. Get with 91W350 at BFR Metals in Kansas and have him ship you 10 Goodyear G177s and call it done. Two pallets should ship for around $500 with motor freight.

Looks like the NCNG was on a aid mission of some type due to the Joaquin wash, and vehicle operator saw the bridge out in the last second, and took her to the ditch to avoid something worse. See the skid marks? What is that on the flatrack?

The 6.5 turbocharged engines for HMMWVs always have different heads from NA.

The center post is part of the gun ring kit.