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my 1079 chassis still had the rubber spacers in the pockets and they were all the same size/thickness, about 1/2” if I reca…

The bracket/pockets are 3/8” plate. in addition to the two channel crossmembers near the pockets there is a box structure that houses the rear crane/helo lift arms, which is built into/thru that upper subframe…. You can see it in the upper left corner of the first picture, the front mudflaps...

I will have to measure the steel thickness on the brackets. No info on the upper frame, bought this as a cab and chassis

you mean something like this? there are upper crossmembers as the upper subframe is a welded structure. If I recall correctly the tape measure was hooked at the rear end of the upper frame. all the LMTV’s have 2 frame rails/upper subframe. the upper frame is configured for the specific...

If I recall if the exc power is not present from K11, you get no led’s on the reg…

There should be a schematic in the back of each of the 5 service manuals.

Exactly! I actually forgot to draw it on mine also:). One goes directly to the starter and the other goes to the polarity protection box and alt…

Cool! Pulsing in a relay/solenoid circuit is usually a weak/high resistance connection In the circuit. A weak connection will pass full voltage until the load draws current. Then the restriction/ resistance will cause the voltage to drop(like a kink in a hose). Because of the way coils draw...

Fuel solenoid should be an on/off response just like when you turn off the switch. Bogging sounds like fuel supply/air. You need to connect a pressure gauge to the T on the inlet to the secondary fuel filter(between filter and governor) and measure the primary fuel pressure. Should be 20@...

sounds like a good idea, but in the end there is only one system that generates power on the truck, and you have swapped half of it… have you measured for AC ripple on the DC outputs?

The important thing to note is the difference in internal resistance between standard wet cell and AGM.s thats why AGM’s put a far greater load(nearly double) on the alt During bulk charging. The reasons they give for deficit charging are spot on, but they missed a solution. Reduce/properly...

Well lights, wipers TS and horn all go thru the column switch…

Two batteries in series… Take a battery(lets call it battery #1) and connect the ground lead to the - terminal. Take a second battery(battery #2) and connect a jumper cable from the + terminal of #1 to the - terminal of #2. Connect the 12v lead at either end of the jumper. the last +...

A pair of group 27’s or 31’s wherever it is at… if I am concerned with starting in the cold, i will take steps to mitigate that instead of oversizing the battery. Cat specs a pair of 31’s for the equipment that uses these engines… The problem with 4 batteries is that they are difficult to...

Thats cool! I don't like the valve in on top of the heater core. Would rather have that valve down outside the cab…

It’s on its own circuit, pull CB23 and connect an amp meter in its place and you will have your answer…

I wonder how 15W40 and ATF would compare in a visgauge at cold and warm temps? you might be able to narrow it down that way…

That line on pin B is for the remote alternator status LED in the dash. You should be able to see it using the lamp test button on the dash. the battery disconnect light is driven directly by the disconnect relays. So if it is on the batts are being disconnected. there are 2 ways to...

Along the lines of lubricity, this has been an issue with the HEUI system on the lube oil side As well. The spool valves that control the flow of high pressure engine oil into the injector need to open and close precisely. This has been a known issue with power stroke owners(Ford licensed HEUI...

The ECU doesn't monitor lift/baseline fuel pressure. You can do it with a cheap mechanical oil pressure gauge kit and one 1/4M-1/8F npt adapter. I have one hooked up in one of my fuel system videos on utube. I squeeze the poly line to take the pulsations out for a stable reading. I am not...