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If you indeed bought the lot, I might be interested in buying some engine and aux parts off of you when I get back to my project. I suspect at this point I've got leaky fuel lines and connection to replace, as my last troubleshooting exercise seemed like the engine was flip-flopping between...

Lots of back and forth on this one on paper. Got a hold of a friend that's adjacent to the AF and like a good boy, wouldn't let me see the manual, but he was happy to hear out my troubles and look over the manual himself and provide some advice. On the circuit, he indicated that the latest...

Confirmed that the unit is indeed...wired wrong. And the spare panel I have? Also wired wrong. Both of these are setup with 24V going straight to the power input. I spent some time carefully reading the water-damaged label on the ignition control module and was able to decipher...

Attached is the way easier to read schematic, with my annotations of info pulled from the text of the patent. Sent from my Nokia 6.1 using Tapatalk

"vent position" would be just switching the burner itself off, as the blower is on if the engine is on (direct mechanical drive). That main 3-pos switch controls the engine. The burner is operated on a separate circuit, which has safety sensor interlocks for high temperature, airflow, and...

I feel dumb on the schematic. I posted here before about the patent being out there in full text. I completely overlooked that the 10th page (Figure 14) is a traditional schematic that meshes up with what I'm interpreting in the dataplate version, but is actually reasonably easy to follow...

Didn't tear into the injector yet, but I did just strip off the entire blower, burner, and heat exchanger assembly to inspect and clean those. This also happens to make it remarkably easier to access and work on the engine, as I basically now have three sides with absolutely unfettered access...

That's sounds like a trick I can believe in-and I think I've seen that before. Sounds like a stop by Goodwill for a cheap pot is in order. Good thing I already have a butane burner for outside, or my wife would murder me... Sent from my Nokia 6.1 using Tapatalk

New filter installed, but didn't make the difference (it makes me feel better having a proper fuel filter with water separator). Injector removed and it indeed had a lot of carbon build-up on it. I did some cleaning, but couldn't get the bugger disassembled. As it was, it barely came out of...

I pulled the fuel pump assembly open...the strainer and gasket looks like the spitting image of the part they're still selling, so I bet they're still compatible. There unfortunately wasn't much to clean off the strainer and the inside of the pump also looked pretty clean. After reassembly and...

Let me make sure I actually need one first before you dig too hard. I have a chance to turn the wrenches again tonight to check it. I also have a proper fuel filter arriving tomorrow I'm case it's not the pump. Sent from my Nokia 6.1 using Tapatalk

Nice! While looking for information about the fuel pump, I stumbled upon the patent for the exact heater I'm working on. Funny enough, the patent literally expired today. https://patents.google.com/patent/US4276018 The attached PDF has multiple detailed drawings and the dialog of the patent...

You're the best for taking the effort to look for that, even if you end up not turning up anything. I did find an army TM that covers another piece of equipment that uses the same engine. It's been helpful at understanding some of the operations of the engine that weren't covered in any repair...

What to do with the air filter is straight out of the Hatz Repair manual: In short, sounds like I need to actually pull this off the engine to get a clearer picture of how to disassemble the filter, as there should be both a removable and non-removable filter element-I'm likely hung up on the...

Alright, so I've gotten a start on getting truly hands on. Drained and rinsed the tank with some fresh fuel, changed the engine oil (well, it had no oil. I just ended up filling it), and attempted to change the fuel filter unsuccessfully (more on that soon...). Slaving off of my HMMWV and...

I just brought home an older ground support heater, NSN 4520-01-056-4269, manufactured by Davey Compressor Company of Cincinnati, Ohio. It's definitely a bit rough around the edges, but it looks like all of the essential equipment is there and in-tact. The hour meter reads out about 1400...