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If you have 3v at one terminal and 12v at the other AND it's the same story at the batteries then you have a connection problem at the batteries, bad/discharged batteries, etc. Fix your batteries and connections - even with the truck off you should have 12.6v and 25.2v at the batteries and about...

What was the reasoning behind deleting the primer?!? The CAT engine already has a lift pump. Not understanding the point of installing an electric lift pump when the engine has a (very reliable) mechanical lift pump built in...... What do you mean when you say "RT wire 12v and LF wire is 3v"...

The 260A is several inches shorter and 26 lbs lighter and doesn't need as much clearance with the shock tower because it doesn't have the side mounted output. But it does still require the shock mount be spaced out due to it's diameter and it uses a different engine mount and longer belt.

It looked like in your pictures they already swapped in the entire chassis harness including the C7 style PDP, etc.... Making the engine run is easy - the ECM only needs two battery 28v+, and two grounds and a 28v+ ignition switched. 5 pins on the chassis side connector and a way to crank the...

That's the intake air temp sensor that controls the grid heater.

Ether injection

It's quite the job on the 3116 and 3126b trucks - cutting huck bolts and upgrading a bunch of wiring and mounting hardware. Not impossible but there's probably easier ways to go about getting more alternator. Definitely cheaper if you are considering what Niehoff wants for one. It's not so...

All of them use the same compressor from what I have looked at.

The pistons and rings rarely are an issue. It's the exhaust valve springs and the disc valves themselves that wear out. Rebuilding the head is quite easy and cheap and can be done without pulling the compressor off the truck. If it's passing oil then it might need rings but it's a toss up...

I would love to check out WI and scout for property there. Probably not in the cards for me in the near future but some day..... Can you read schematics?

Your truck gets the oil pressure from the engine computer databus. The C7 oil pressure transducers are flaky. I would replace all of them if you haven't. Oil, atmospheric, and boost.

I can show that the military is so fed up with the 100A alternator situation and having to constantly replace them to the tune of $2k each that they have gone to the trouble of making 260A upgrade kits for every FMTV even back to the A0 trucks (which a few are still in use by the 82nd as I...

An interesting aside to this observation - I recently picked up a 1984 M1009 CUCV (Chevy K5 blazer military edition). It runs a similar hybrid 12/24 system to our trucks and has the ability to run two 6TL batteries..... GM was present in class the day that S&S was playing hooky. These trucks...

That seems like as good a solution as any if there's room to implement it. The stock cover is mild pain in the rear to install. Have to tilt the cab. That said - down to about the mid 20's you don't need it. Below that....we were getting down to 17 in that cold snap and my defrost was having a...

I'm not an expert - I have a dangerous level of understanding from a working mans non-EE (software in my case) engineering experience. That said I feel like the problem is very tricky for the VR to contain - these alternators have multiple stages - in fact the 12/24 dual voltage alternator has...

My truck maintains about 95 psi overnight. And then over a few days it will go lower. Rarely lower than 60 unless it's very cold. I keep working toward perfection but it's not an easy task. The fewer the leaks the less load on the compressor.

Induction motors - which brushless alternators share much in common with - are REALLY dumb. If you ask more of them then they are rated for they will GIVE everything they have to try to stay at their rated RPM and will die in the attempt if too much load is put on them. The amount of slippage...

The newer trucks moved to the Haldex PURest dryer: https://www.haldex.com/en/na/air-dryer/air-dryers/haldex-newremanufactured/purest-air-dryer/?ProductionStatus=Active While the cartridges are arguably a bit more expensive - the service literally takes about 10 minutes.

Well - it's either the alternator itself or the voltage regulator that's the failing..... the preponderance of evidence though suggests that they were not ultimately capable. The fact that later trucks were upgraded to the 260 despite actually having less load with LED lighting suggests there...

The one on the truck looks like it's original and has the "adjustment" on the end - like this one listed on ebay: https://www.ebay.com/itm/155285703936 What effect will adjusting this have? Should I tighten or loosen it? The bulk of my transmission experience is 700R4's and 4L60/80E's so...