Can anybody tell me info about how to remove and install the crank sprocket for the LT4 extreme duty set up tools etc I am unsure if it needs to be pressed on or ?

 

same as any crank sprcoket I'd assume, take a really bit socket to fit over the crank & bang the socket which will drive the sprocket on, then when the balancer/hub goes back on, it will acctually push the sprocket in all the way if it had a bit to go cuz the hub all the way on still pushes firm up against the sprocket to make sure its in & doesn't come off so if hub is on all the way then its all good, but yeah do that.

 

All crank sprockets are a press fit. Removal is done with a 2 or 3 claw puller. Installation can be done with a piece of pipe or something to drive it on flush.