I agree with Tom, you are not doing a complete brake job.
How many miles on your truck, have the rotors ever been changed, how about the wheel bearing, when were they last lubed or replaced, same holds on the diff and swivels, when were they serviced.
When done, make sure you do a full, 3 pint DOT 4 fluid flush.
You most likely need to go a lot farther into the process.