According to manual it looks like the line that goes from master to slave cylinder is supposed by be held in master cylinder by a nut where you would use a flare nut wrench, and mine is nothing like that, line looks like is goes over hard plastic piece protruding from master cylinder, and if I tried to force line of it looks like it will break. The line spins freely in cylinder, and looks like there is some kind of rolled pin possibly holding it in? Is that rolled pin what is holding the line in and does it need to be removed by tapping it out? Vehicle in question is a 93 cherokee 4 liter and the plastic piece on end of rod protruding from master cylinder broke that is why cylinder needs replacing.

 

Yeah, unbolt the cylinder from the firewall then knock the roll pin out. Buy a new pin when assembling it. BTW, the Slave cylinders are in the bellhousing of the transmission and is a foul word to replace.