Lippy, you're front drums DO come off w/ bearings etc. Pull the little cap off ( ~2" dia. in the center), then pull the cotter pin, then unscrew the big nut. Conical hub bearings will just slide out then you can pull the drum off.
Adjustment is best done with both front wheels (or rear wheels) jacked off the ground. You can adjust by turning the little ratchet wheel inside. I usually do a rough setup with the wheels off, just until you hear the drums grabbing on the shoes. Then put the wheels on and adjust until I get about a full revolution out of the wheel before friction causes it to stop. Take it for a spin around the block then touch one of the drums. If the drum is extremely hot to the touch, then loosen them up a little bit. If the truck pulls to one side when braking you have adjusted them unevenly.
So pulling to the left means the left side is too tight OR the right side is too loose. Just look for that happy medium.
