Long over due update on my '55 2nd series 6400 - My 2018 plans for the truck were back burnered last spring after the brakes went completely out but I'm starting to catch up finally.
In April '18 I had just done the first oil change in the new motor, took the truck out for test drive without realizing the brakes weren't working at all. Fortunately nothing bad happened sans brakes so I crawled the truck home where it sat while I built my FJ45 Toyota Land Cruiser.
Side note - Huge thanks to Mike B. for the NAPA part numbers for the rear axle wheel cylinders which I'll follow up with.
-My two sons and I recently replaced the driver's side rear wheel cylinders. Fortunately the drum, shoes, and hardware all looked great so it came apart and and went back together pretty easily. I still have to pump the brakes before they're really there which I guess means the shoes need adjusting. No big deal.
-My youngest replaced the two front marker lenses; one of which was broken and the other was missing.
-I added in ball valves between the water pump and heater core hoping to keep some heat out the cab. I drove the truck around last night and I guess it make some difference but we'll see long term.
-We still have to replace the wing windows & choke cable (I might set the cable to do something else since there's no choke on the Double Pumper.
-I might order something like a pair of 6" diameter dash mounted fans to move some air through the cab,