An apparatus for transferring leaking drums to a salvage drum utilizing a liftgate assembly having a vertical rail for supporting a liftgate and a drive mechanism for raising and lowering the vertical rail, the apparatus including a lift boom assembly having a chain mounted thereon with a drum lifting clamp secured to the chain for engaging the leaking drum and a pair of tubular pocket assemblies mounted in a vertically spaced relation on the vertical rail and a pair of pin assemblies mounted on the lift boom assembly for matingly engaging the pocket assembly whereby the lift boom assembly can be pivoted with respect to the liftgate assembly and removed for storage in the vehicle.