The hardest part of doing the brakes on these old 1.5 tons is removing the wheel bearings and hub. The brakes are so simple by themselves, just one spring and a wheel cylinder at the top. The wheel bearings are easy if you take it sort carefully and lay the parts out in the order that you removed them, then install them the opposite order they came out. When tightening the nut on the spindle that’s holds the wheel bearings in, tighten until spinning the hub gets harder, then back off just enough to insert the cotter pin.