clutch to floor 88

Recently having this happen more often. Barely leaks fluid, but all the sudden no clutch. Slave cylinder right? When i get a new one what else do i need? New lines? Should i also replace the master? Any info appreciated. This jeep is driving me crazy.

x2 on doing the system as a whole.

...you've got an internal slave on that bad boy. When mine went out on my '87 (shortly after putting in a new master cylinder) I replaced the hard lines, the slave clyinder...and the weakest link of them all...the peugeot tranny . Later model AX-15's have an external slave (as do nv3550's) FYI.