Cooling Fan Operation
The cooling system includes 2 dual speed engine cooling fan motors, both of which drive fans with 5 asymmetrical blades to reduce air noise. The fans remove heat from both the engine coolant flowing through the radiator and the refrigerant flowing through the air conditioning condenser. The fan and motor assemblies are mounted on a common shroud, which in turn is mounted onto the engine side of the radiator. The A/C condenser is mounted to the front of the radiator.
The fan motors are 12-volt, dual speed types. The internal construction of the fan motor consists of 4 brushes and 4 permanent magnets. A 3-wire pigtail harness is permanently attached to both motors and is attached to the polypropylene fan shroud at 2 locations by integral clips moulded as part of the shroud. Both motor harnesses are connected directly to the engine harness through a 3-pin sealed connector. This enables individual removal of the left and right fan and motor assemblies when necessary. The 2 electrical connectors are attached to the shroud by way of slide lock clips. Each motor is attached to the polypropylene fan shroud by 3 bolts installed at the threaded mounting flanges, which protrude symmetrically from the rear of the fan motor housing. The enclosed fan motor housing is constructed of yellow zinc coated steel. A drain hole is located in the bottom of the housing to allow for breathing and draining of any moisture ingress. Both fan motors rotate in an anti-clockwise direction when viewed from the fan motor side. Both fan and motor assemblies are balanced as a unit. Fan blades must not be separated from their respective motors. Fan motors and blades are serviced only as an assembled unit. The central nut attaching the fan blade to the motor shaft has a left-hand thread