Puller tool

A puller assembly for use with a lock device having a locked state and an unlocked state, the lock device comprising an operator actuation assembly, a core assembly, and a retainer coupling the operator actuation assembly relative to the core assembly, the operator actuation assembly having a front end engageable by an operator to rotate the operator actuation assembly about a longitudinal axis intersecting the core assembly and a rear end opposite the front end and facing a front end of the core assembly, a gap existing between a portion of the rear end of the operator actuation assembly and a portion of the front end of the core assembly, the puller assembly comprising:

• a front end and a rear end opposite the front end;
• a puller core body having an opening sized to receive at least a portion of the operator actuation assembly of the lock device;
• a first engagement surface positioned to engage the portion of the rear end of the operator actuation assembly of the lock device;
• a second engagement surface positioned to engage the portion of the front end of the core assembly of the lock device;
• and
• an actuator which is moveable to alter a separation between the first engagement surface and the second engagement surface from a first separation equal to a width of the gap between the portion of the rear end of the operator actuation assembly and the portion of the front end of the core assembly to a second separation greater than the first separation, the second separation causing a decoupling of the operator actuation assembly of the lock device from the core assembly of the lock device.