NOTE: These instructions apply to the 3.0L and 4.2L V6 engines in the 1998 Ford F-150.
Tools Needed
* Flat-blade screwdriver
* Phillips-head screwdriver
* Adjustable wrench
* Socket wrench set
* Torque wrench
* Replacement radiator fan clutch
Parts Needed
* Replacement radiator fan clutch
* Coolant (if necessary)
Instructions
WARNING: Allow the vehicle to cool down completely before beginning this procedure.
1. Disconnect the negative terminal of the battery.
2. Remove the upper radiator hose by loosening the hose clamp and pulling the hose off of the radiator.
3. Drain the coolant from the radiator by opening the drain plug at the bottom of the radiator.
4. Remove the shroud surrounding the radiator fan by removing the bolts holding it in place and lifting it off.
5. Disconnect the electrical connector for the fan clutch by pressing down on the locking tab and pulling the connector apart.
6. Use an adjustable wrench to hold the fan clutch pulley steady while you loosen the nut holding the clutch in place.
7. Remove the nut and washer and pull the fan clutch off of the water pump shaft.
8. Clean the water pump shaft and install the new fan clutch.
9. Tighten the nut to the specified torque (35 ft-lbs for the 3.0L engine, 45 ft-lbs for the 4.2L engine).
10. Re-connect the electrical connector for the fan clutch.
11. Install the radiator fan shroud.
12. Refill the radiator with coolant.
13. Reconnect the negative terminal of the battery.
14. Start the engine and let it reach operating temperature. Check for leaks.
Tips:
* If you are replacing the fan clutch because of a coolant leak, it's important to identify and repair the source of the leak before installing a new fan clutch.
* If the fan clutch is seized, you may need to use a pry bar to break it loose from the water pump shaft.
Troubleshooting:
* If the fan clutch is not engaging properly, check the electrical connector and make sure that it is properly connected.
* If the fan clutch is still not engaging, you may need to replace it.
