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WARNING: USE EXTREME CAUTION WHEN THE ENGINE IS OPERATING. DO NOT STAND IN A DIRECT LINE 6. Start the engine and operate at 2400 rpm. Within ten minutes the air temperature (indicated on the dial ther- mometer) should be up to 93° C (200° F). Fan drive engagement should have started to occur at between 91° 7. When the air temperature reaches 93° C (200° F), remove the plastic sheet. Fan drive disengagement should have started to occur at between 62° to 85° C (145° to 185° F). A definite decrease of fan flow noise (roaring) REMOVAL 3.7L ENGINE 1. Disconnect negative battery cable from battery. NOTE: The thermal viscous fan drive/fan blade 2. Remove the accessory drive belt (Refer to 7 - COOLING/ACCESSORY DRIVE/DRIVE BELTS - 3. Remove fan blade/viscous fan drive assembly from water pump using special tool 6958 spanner 4. Do not attempt to remove fan/viscous fan drive assembly from vehicle at this time. 5. Do not unbolt fan blade assembly from viscous fan drive at this time. 6. Remove fan shroud to radiator bolts. 7. Remove fan shroud and fan blade/viscous fan drive assembly as a complete unit from vehicle. 8. After removing fan blade/viscous fan drive assembly, do not place viscous fan drive in horizontal position. If stored horizontally, silicone fluid in the viscous fan drive could drain into its bearing assembly and contaminate CAUTION: Do not remove water pump pulley-to-water pump bolts. This pulley is under belt tension. 9. Remove four bolts securing fan blade assembly to viscous fan drive. 7 - 62 ENGINE KJ |