As a direct replacement fan blade for legacy part numbers 667383

Turning the screw alters the pressure at which the internal diaphragm shifts the air signal between the NC (Normally Closed) and NO (Normally Open) ports relative to the Common port

always verify manifold pressure with a manometer and ensure the thermal switch is reset to prevent nuisance lockouts

this repair kit focus is on the wear components like the seat ring and gasket

this specific model is rated for 24V AC (60Hz) operation

Nordyne 634661 Molex Plug 324846-701 As a direct replacement fanThe Nordyne 634661 Molex Plug is a critical electrical connector designed for seamless integration within Nordyne, Miller, and Intertherm furnace control circuits. This 9 pin female wire to wire connector facilitates stable power and signal distribution between the furnace control board and the blower motor assembly or integrated harness. Engineered for high temperature resilience in HVAC environments, the 634661 Molex housing ensures secure pin