Air cleaner arrangments with end support for cartridge; components; and, methods

An air cleaner assembly comprising:

• (a) an air cleaner housing including an air flow inlet and an air flow outlet;
• the air cleaner housing defining a housing interior and comprising a housing body and an access cover;
• and,
• (b) a filter cartridge operably positioned in the air cleaner housing;
• the filter cartridge comprising:
• (i) a media pack surrounding an open interior and including media having first and second, opposite, ends;
• (A) a first end cap positioned at the first end of the media pack;
• (1) the first end cap having a central air flow aperture therethrough;
• (ii) a housing seal arrangement on the first end cap;
• (A) the housing seal arrangement surrounding the central air flow aperture and defining an inwardly directed radial seal;
• (iii) a second end cap on the second end of the media;
• (A) the second end cap including a first projection thereon extending in direction away from the first end cap to a location not surrounded by media of the media pack;
• (B) the first projection comprising a continuous serpentine wall having a radially inner surface and a radially outer surface;
• (C) the radially inner surface of the serpentine wall having eight inwardly convex sections and eight inwardly concave sections alternating with respect to one another;
• and,
• (D) the radially outer surface of the serpentine wall having eight outwardly convex sections and eight outwardly concave sections alternating with respect to one another;
• and,
• (iv) a plurality of spaced projections positioned adjacent the outer perimeter of the second end cap;
• (A) each one of the spaced projections being at least 10 mm long;
• (B) each one of the spaced projections extending in a direction away from the media and the second end cap;
• (c) the air cleaner housing seal arrangement on the first end cap being releaseably sealed to the housing;
• and,
• (d) the access cover including a serpentine ring member defining a receiving groove having a serpentine inner wall and a serpentine outer wall, and,
• (iii) the continuous serpentine wall on the second end cap projecting into the receiving groove on the access cover with the serpentine inner wall of the receiving groove surrounded by the radially inner surface of the continuous serpentine wall, and with the serpentine outer wall of the receiving groove surrounding the radially outer surface of the continuous serpentine wall.