Component of the H1 type VI (H1-T6SS) secretion system that plays a role in the release of toxins targeting both eukaryotic and prokaryotic species. Acts as an AAA(+) ATPase that disassembles the contracted sheath, which resets the systems for reassembly of an extended sheath that is ready to fire again. Interacts with TagJ. Belongs to the ClpA/ClpB family.