if you have an impact gun with a decent air supply the crank bolt should come loose fairly easily. the balancer should come off without much protesting but you may need a puller. felpro makes a timing cover seal set, and get the one with the repair sleeve for the balancer shaft. the rubber front seal eats into the metal...go figure. alignment is crucial to keep the front seal from leaking. there should be 2 alignment sleeves in the block when you pull the cover...if they are missing, you can get them.