Radiator fan clutch (thermostatic) replacement.
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Joined: Nov 2010
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From: N. IL
Radiator fan clutch (thermostatic) replacement.
2000 Ford Excursion V10 6.8l
Napa Auto parts; $172
My fan used to make a noticeable amount of noise while off-roading slowly up hills. Lately, the engine is quiet, smells hot and like its leaking antifreeze, but not seeing any drips. After this chore, the fan roars to life in similar situations. I hope this improves my A/C cooling performance (was 72 today).
Wear gloves, those plastic fan blades are sharp. Short pants ok.
Disconnect battery if you like. This clutch has no wiring.
Loosen the serpentine with the 3/8ths breaker bar and route it out of the way to get access to the water pump pulley.
Loosen 3 of the 4 13mm (1/2inch) bolts that holds the plastic fan to the clutch. Leave one tight.
Hold the water pump pulley immobile with a strap wrench; this takes some doing…
I used a big pipe wrench and cheater; but the appropriate crescent will work also.
Hold the pulley with the strap wrench while loosening the large clutch nut. Lefty loosey. 2 person job.
Once loose, but still connected to the shaft, remove all 4 13mm bolts and drop the fan carefully to the bottom of the radiator; no need to remove completely.
Now remove the clutch assembly by turning left with the large nut.
Install the new clutch by screwing it on righty tighty.
Re-install the 4 small bolts that hold on the sharp plastic blade assembly.
Tighten the large nut while holding the pulley steady with the strap wrench. 2 person job.
Check tightness of all fasteners.
Hook up the neg terminal on the battery.
Basics:
http://en.wikipedia.org/wiki/Fan_clutch
Napa Auto parts; $172
My fan used to make a noticeable amount of noise while off-roading slowly up hills. Lately, the engine is quiet, smells hot and like its leaking antifreeze, but not seeing any drips. After this chore, the fan roars to life in similar situations. I hope this improves my A/C cooling performance (was 72 today).
Wear gloves, those plastic fan blades are sharp. Short pants ok.
Disconnect battery if you like. This clutch has no wiring.
Loosen the serpentine with the 3/8ths breaker bar and route it out of the way to get access to the water pump pulley.
Loosen 3 of the 4 13mm (1/2inch) bolts that holds the plastic fan to the clutch. Leave one tight.
Hold the water pump pulley immobile with a strap wrench; this takes some doing…
I used a big pipe wrench and cheater; but the appropriate crescent will work also.
Hold the pulley with the strap wrench while loosening the large clutch nut. Lefty loosey. 2 person job.
Once loose, but still connected to the shaft, remove all 4 13mm bolts and drop the fan carefully to the bottom of the radiator; no need to remove completely.
Now remove the clutch assembly by turning left with the large nut.
Install the new clutch by screwing it on righty tighty.
Re-install the 4 small bolts that hold on the sharp plastic blade assembly.
Tighten the large nut while holding the pulley steady with the strap wrench. 2 person job.
Check tightness of all fasteners.
Hook up the neg terminal on the battery.
Basics:
http://en.wikipedia.org/wiki/Fan_clutch
Tuned
Joined: Jun 2013
Posts: 390
Likes: 0
From: Taking a nap
+1
Dorman V10 fan, pn 620-159, needs the 4) holes for attaching (to clutch) reamed out.
Fan came w/ 17/64" dia holes, but requires 11/32" for the fasteners..as is the OEM fan.
If your going to R&R the fan without pulling the shroud (or clutch), this will save you aggravation.
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