Thank you, Giles, I was wishing for a schematic of some sort. Carol (and others), I think you've clarified that this should be a simple procedure.
Hubby has adjusted his own brakes and serviced his vehicles for years, so this should be simple for him. He (until only recently) would lie in the snow under his log truck and adjust the brakes to his own satisfaction.
What you're describing I'm sure he can easily do.
What he discovered yesterday in his preliminary exploration was that the lug nuts on both tires
were on so tight that we would never have been able to get them off to change a tire out in the wild. Fortunately, we have a long extension thingy that gave him extra leverage, although it's an item we would not have had with us in an emergency. Another bullet dodged!
He'll read through all of your posts later today, and I'm sure will know just what to do. Thanks for the help and suggestions, and the *friendly* corrections.