System configured to couple a hydraulic hammer and tool

A hydraulic hammer comprising:

• a housing defining a chamber, elongate along a longitudinal axis, configured to receive a tool, the chamber comprising an opening through which the tool is configured to be inserted;
• a plurality of upper splines disposed on an inner surface of the chamber, the plurality of upper splines longitudinally oriented parallel to the longitudinal axis;
• a plurality of lower splines disposed on the inner surface of the chamber, the plurality of lower splines longitudinally oriented parallel to the longitudinal axis;
• and
• a locking mechanism disposed within the chamber between the plurality of upper splines and the plurality of lower splines, the locking mechanism comprising a locking ring that is rotatable about the longitudinal axis with respect to the housing, the locking ring comprising a plurality of locking ring splines disposed on an inner surface of the locking ring, wherein the hydraulic hammer defines an unlocked state in which the plurality of locking ring splines are configured to align with both the plurality of upper splines and the plurality of lower splines.