Jeep 52028339AB Module-Radiator Cooling

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Disconnect the negative battery cable from the battery. Disconnect the electric cooling fan wire harness connector. Remove the mounting bolts and carefully lift the fan out of the engine compartment. To detach the fan from the motor, remove the motor shaft clip. To remove the bracket from the fan motor, remove the mounting nuts. Installation is the reverse of removal. Disconnect the negative battery cable. Remove the fan shroud mounting screws and lift the shroud up until it clears the slots in the bottom bracket of the radiator, then push the shroud over the fan. Remove the nuts attaching the fan/clutch assembly to the water pump hub. Lift the fan/clutch assembly out of the engine compartment. Carefully inspect the fan blades for damage and defects. Replace it if necessary. At this point, the fan may be unbolted from the clutch, if necessary. Installation is the reverse of removal. Be sure to tighten the fan and clutch mounting nuts evenly and securely. To test the motor, unplug the electrical connector at the motor and use jumper wires to connect the fan directly to the battery. If the fan still doesn't work, replace the fan motor. If the motor tested OK, the fault lies in the coolant temperature switch or the wiring which connects the components. Carefully check all wiring and connections. If no obvious problems are found, further diagnosis should be done by a dealer service department or repair shop. Disconnect the negative battery cable and rock the fan back and forth by hand to check for excessive bearing play. With the engine cold, turn the fan blades by hand. The fan should turn freely. Visually inspect for substantial fluid leakage from the clutch assembly. If problems are noted, replace the clutch assembly. With the engine completely warmed up, turn off the ignition switch and disconnect the negative battery cable from the battery. Turn the fan by hand. Some drag should be evident. If the fan turns easily, replace the fan clutch.