Thanks Recce. More progress has been made lately.... No exciting pictures though.
Trans has been flushed and refilled with ATF. After draining it, I think it actually
had ATF in it already. It shifted well and continues to shift well, so that's all good. Followed the guidance in this thread:
Did the switch from the 15w40 engine oil in the transmission on my 1997 M1078 LMTV with WTEC II to ATF. Followed "8-9 Transmission Oil Filter Replacement" procedure found in TM 9-2320-365-20-3 page 8-32. However, I deviated from the procedure and did NOT remove the front driveshaft (WARNING...
www.steelsoldiers.com
This included driving an up to temp city and hwy cycle between flushes (2). Found a Valvoline organic oil which met the Allison spec and used that ($130/5gal, used right at 5 gal per flush).
In addition, I took the liberty of cutting three massive holes in the roof for my roof hatches and bathroom vent/fan. Truck is now out from under the carport shelter and waiting to get rained on. Ironically, the forecast has cleared up for now....
Once the integrity of the box is validated, the buildout of the interior will begin.
I did run it across the scales as it currently sits. It's a bit heavier than I expected- although I never did hard math, just a bit of guesstimating. Front axle now tags in at 9,700# and the rear at 12,300#. So at a present total of 22k, I still have 4k to play with but it is a bit closer to my sub-26k objective than I would have chosen. I can't say I regret any of the decisions though, I am quite satisfied so far with how it's playing out.
I am starting to spec out wiring, plumbing, solar, and appliances- and drowning in the data...