Liquid filter assemblies; features; components; and, methods

A method of installing a filter cartridge, the method comprising:

• (a) positioning the filter cartridge into the interior of a filter bowl;
• the filter cartridge including,
• (i) a media pack surrounding a central, longitudinal axis;
• the media pack being between first and second end constructions;
• (ii) a spigot projecting from the second end construction and defining a filtered flow outlet, the spigot having a free end remote from the media pack;
• the free end extending in a plane not orthogonal to the central axis;
• (A) a seal member mounted on an outer surface of the spigot;
• (iii) a radially directed first axial alignment interference portion positioned and extending outwardly from the spigot and toward an outer perimeter of the second end construction;
• (iv) the second end construction having a radial abutment member defining a collar receiving gap between a portion of the radial abutment member and a portion of the spigot;
• (A) the collar-receiving gap being traversed by the first axial alignment interference portion;
• (b) rotating the filter bowl holding the filter cartridge onto a filter head, the filter head having a collar with a radial alignment projection member, to align the first axial alignment interference portion on the filter cartridge with the radial alignment projection member on the collar;
• and
• (c) axially pushing the spigot into the collar until the seal member on the spigot is sealed to an interior of the collar in a fully sealed orientation.

A method of installing a filter cartridge, the method comprising:

• (a) positioning the filter cartridge into the interior of a filter bowl;
• the filter cartridge including,
• (i) a media pack surrounding a central, longitudinal axis;
• the media pack being between first and second end constructions;
• (ii) a spigot projecting from the second end construction and defining a filtered flow outlet, the spigot having a free end remote from the media pack;
• the free end extending in a plane not orthogonal to the central axis;
• (A) a seal member mounted on an outer surface of the spigot;
• (iii) a radially directed first axial alignment interference portion positioned and extending outwardly from the spigot and toward an outer perimeter of the second end construction;
• (iv) the second end construction including a radial projection arrangement positioned at an outer periphery of the second end construction and comprising at least two radially flexible tabs, each having:
• (A) a radially outwardly directed projection arrangement;
• and
• (B) an upwardly directed, free, handle end manipulable to retract the projection arrangement radially inwardly;
• (b) rotating the filter bowl holding the filter cartridge onto a filter head, the filter head having a collar with a radial alignment projection member, to align the first axial alignment interference portion on the filter cartridge with the radial alignment projection member on the collar;
• and
• (c) axially pushing the spigot into the collar until the seal member on the spigot is sealed to an interior of the collar in a fully sealed orientation.