I used a 12 inch crescent tool turning it counterclockwise and holding the water pump pulley in place with a 13mm tool. I hope this help. Good luck.
Sounds more like a thermostat or water pump. The fan clutch locks up when it is toast. Fan will wiggle a bit when the water pump is shot.
IT IS BEST TO CONSULT A HAYNES MANUAL FOR THE MOST COMPREHENSIVE INSTRUCTIONS. Basic removal of fan shroud. Disconnect electrical connection to fan clutch. Drain coolant through lower rad hose. If you are very careful and good, you can remove pump, etc. without removing the rad. If you don't feel lucky - remove the rad. Clockwise undo of fan clutch bolt. THERE IS A RENTABLE TOOL TO HELP with this step. Remove fan clutch, then the water pump. The only thing basically different are the clips on the shroud and the electrical sensor connection to the fan clutch. It has to be reconnected or you will throw a code and get reduced engine power.
Could be the water pump or fan clutch hitting the shroud. If you replace one then do both as the labor will kill you to do it again.
You have to take the rad right out and you'll have a lot more room.
fan clutch is built into water pump,u have to get new water pump.
It is well documented in our forum at www.trailvoy.com It takes a few hours to complete and should probably include a water pump change if your truck is older and you plan to keep the truck for any length of time.
A few weekends ago I had to replace the fan clutch on my '06 Trailblazer EXT LS. In addition to getting the P0495 code from the check engine light, when I rev'd it up it sounded like a jet engine. Instructions: http://www.diystew.com/2006-trailblazer/
In some Nissan Pickups of that year, the fan clutch is actually integrated with the water pump as an assembly. Therefore, the fan clutch cannot be separated from the water pump. There are six bolts holding the water pump to the engine block; remove those bolts and the water pump/fan clutch assembly should come out as a unit.
If Possible Get rid of your Clutch Fan and go Electric! But to answer the question, remove serpentine belt and use a strap wrench to stop clutch from spinning when you try to remove fan clutch nut from water pump!
-drain coolent -remove serpentine belt -remove clutch fan -remove rad hose going to water pump -unbolt and remove water pump
Unless the fan clutch is bad just remove it with the water pump. Otherwise it is a 36mm fan clutch wrench that most auto parts stores have for rent.
Disconnect the battery Drain the cooling system Remove the fan and clutch assembly from the water pump. You will need to get a fan clutch holding tool and a Fan Clutch Nut Wrench. Ford T84T-6312-C - Fan Clutch Holding Tool - Global Tool# 303-239 - OTC tool# 7204E1 Ford T84T-6312-D - Fan Clutch Nut Wrench - Global Tool# 303-240 - OTC Tool# 7204E2 After loosening the fan and clutch assembly from the water pump using the two tools listed above position the fan and clutch asembly in the fan shroud. THEN remove the fan shroud (which has the fan/clutch assembly in it) Loosen the water pump pully bolts Remove the drive belt by rotating the tensioner away from the belt by using pully retaining bolts only. (Do not pry on belt tensioner!) Remove the water pump pulley Disconnect the lower radiator hose, heater hose andwater pump bypass hose at the water pump. Unfasten the bolts that attach the pump to the cylinder front cover. Remove the pump and gasket.