Abstract: An air conditioning and heating system is disclosed having a manually operated air temperature door that is movable in both an air conditioning mode and a heating mode to regulate the amount of air passing through a heat exchanger to thereby control the temperature of the air delivered by the system. Adapted thereto is an air temperature control arrangement comprising an air baffle that is movable with and adjustable relative to the air temperature control door so as to adjust the amount of air passing through the heat exchanger in the various regulating air temperature door positions.

Abstract: In a system wherein a Bowden cable is coupled between driving and driven members, an automatic adjustment system for calibrating the tie-down point of one end of the cable sheath upon initial movement of the driving member to the limit position of its travel so that in subsequent operation the end of travel position of the driven member is coordinated with the end of travel position of the driving member. The end of the sheath nearest the driving member is initially movable over a restricted range of positions and a calibration member is operative when the driving member is moved to the limit position of its travel to lock such end of the sheath in a final calibration position.