Washing machine appliance having a removable agitator

A washing machine appliance comprising:

• a tub;
• a basket rotatably positioned within the tub;
• an impeller base rotatably mounted within the basket and defining a rotation axis, the impeller base comprising
• one or more impeller fins extending radially outward from the rotation axis, and
• a mounting face disposed radially inward from the one or more impeller fins, the mounting face comprising a central bracket defining a mounting channel having an axial portion and a radial portion extending along the mounting face;
• an impeller cap slidably seated within the central bracket and biased upwardly;
• and
• an extended post removably attached to the impeller base to rotate therewith, the extended post comprising
• a connector column extending along the rotation axis between a bottom end proximal to the impeller base and a top end distal to the impeller base, the connector column selectively resting on the impeller cap and defining a cam groove above the bottom end,
• a shader collar disposed about the connector column, the shader collar comprising a follower pin seated within the cam groove to move therealong,
• a column spring disposed about the connector column radially between the shader collar and the connector column, the column spring being in biased engagement with the connector column and the shader collar to motivate axial expansion therebetween, and
• a mating face disposed on the bottom end, the mating face comprising a locator wing selectively and slidably received within the mounting channel,
• wherein the cam groove defines a left leg extending from a left bottom seat to an upper vertex and a right leg extending from a right bottom seat to the upper vertex, and
• wherein the cam groove further defines an upper seat disposed below the upper vertex between the left leg and the right leg.