Sunday, November 3, 2013
How to Install a Fan Clutch in a 1985 Ford F 150
Ford uses a thermal-type fan clutch to regulate cooling fan speed in the 1985 F-150. At low temperature, the clutch slips to reduce fan speed. As the engine heats up, the clutch increases the fan speed to increase the amount of cooling air drawn through the radiator. Fan clutches eventually wear out and either slip or drag, causing overheating or overcooling, respectively. You can use common tools to replace the fan clutch.
Instructions
- 1
Remove the two radiator shroud retaining bolts one on each side -- on the top flange of the radiator, using a ratchet, socket and wrench. Pull upward slightly to disengage the bottom of the shroud from the radiator pads. Pull the shroud away from the radiator and rest it on the cooling fan.
2Remove the four clutch to water pump bolts on the fan clutch flange, using a ratchet and socket. Slide the fan clutch and fan around the shroud and out of the engine compartment.
3Remove the four cooling fan to clutch bolts in the center of the fan, using a ratchet and socket. Lift the fan off the fan clutch. Install the fan onto the new clutch. Put the clutch between two wood blocks and tighten in a vise until snug. Tighten the bolts to 12 to 18 foot-pounds, using a torque wrench and socket.
4Slide the new fan clutch into position on the water pump pulley. Install the clutch to water pump bolts and tighten them to 12 to 18 foot-pounds.
5Move the radiator shroud into position on the radiator. Engage the bottom of the shroud in the radiator pads. Install the radiator shroud retaining bolts, using a ratchet, socket and wrench
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