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That most definitely sounds like wiring or a component issue. As Colt mentioned the 200f thermal sw removes power from the circuit to de-energize the coil of the solenoid valve, vent the clutch air and engage the fan. Not where I can look at a schematic right now, but will look later this...

Ok I see what they did, they shifted the lower cab latch to the mid structure and added that arch support to distribute the load across the back if the standard cab… that would be a bit of work to convert to a air suspension cab…

Yea, thats a different shock tower. And unless you add half a ton+ of armored cab mass for that extra spring to work with, I am going to guess that the ride will be a little harsh…

In my experience, .005” of movement is about the minimum you can detect by hand…

I didn’t find any specs for it, so don’t have any displacement info to compare it to whats there. The pump that is in there is I believe made by PowerPacker and displaces ~1/4 cu/in and only pumps on the downward stroke, so it takes about 160 pumps to lift the cab. they also make the same basic...

Just the rad, or rad and intercooler? Should be some breakers in the South East that can get you what you need…

Cat introduced the HEUI 3126 in I believe 1998, but it didn’t find its way into the LMTV until the A1 version around 2002?

Not with the stock latches, as I didn’t have any(doors were stripped of latch hardware on my truck). It should work ok, but you may need to change to a different rod or fab an adpter as the Toyota latches use larger diameter linkage rods…

Yep, thats your main ground point, that will cause issues… The large wire hanging free is the lead back to battery negative. From what I understand of the LBCD, if it is working correctly, it should allow battery connection/close the disconnect relays when energized. But with that large lead...

Sounds like the main battery disconnect relays are not energizing. They are controlled by the LBCD/polarity box that thedrashstash mentioned. On the A1/A1R It senses alternator load From the regulator and will disconnect the batteries if the alt is overloaded(one way to deal with a small alt...

And mine went with the valve when I sold it:)

What do the instructions inside the valve door say? Those from the manufacturer should trump any manual…. From a hydraulics standpoint, the valve position of valves on circuits that are not selected should be irrelevant if the function selector valve is working properly and isolating the flow...

Dave did you find 24v on pin 30 of relay K11?

His is an A1R…

No, if you have 12v batt and ign supply to the connection points I mentioned above That should be it got 12v. So you wound up swapping the MMDC and gauges twice? Ouch! Not a fan of glass cockpits and integrated gauges, I like my failures in small bite-sized pieces:)

like any other data system, garbage in = garbage out… The fuel gauge is driven by it’s own sender connected to the MMDC. It should be an isspro 33-240 ohm sender. Disconnect it at the tank and measure it with an ohm meter. You should see a resistance in that range equating to a relative fuel...

Simple voltage tests can sometimes be deceiving. You really need to check them while under load. this is true of any DC troubleshooting. Voltage isn’t good untill it is measured good under load. Batteries have the added twist of state of charge, which can effect how they perform under load...

It’s not too bad. And it is the same main steps to permanently remove it. In the first pic disconnect the line circled in red and indicated with green and remove the “T” fitting from the side of the load sense valve. Replace the T with an elbow and re-connect the green line(service air in) to...

Ok, well that sounds like the LBCD is trying to do exactly what it is supposed to be doing, and disconnecting the alt because it is sensing an overload. Do you have a voltmeter measuring the 24V? The 12-24 v batts should be reading the same 14.2 individually or 28.4 across the two in series...

Ok, lets get some clarification here. Where are you getting 24v from to apply to the excite terminal. Do not get it from the AC terminal, because as soon as the alt tries to come online, that 24v goes away as the reg starts sending it to ground to pull the field current and develop output. The...