1st.... always remember that it is "LEFTY LOOSEY, RIGHTY TIGHTY".... unless it has reverse threads, then it is the opposite.
You have a good start with the book... read it, take it to your truck and compare the pix with your truck until you find what you are looking for...
these old trucks are fairly simple to work on, especially if you can read!!
you will also get mucho free advice here!!!
welcome to the 'bolt too btw.