Fan pulley nut won't budge

To remove clutch fan: 1. Remove the fan shroud. Remove the top screws & the two side screws with a socket & ratchet. 2. Remove the top radiator hose by using a screwdriver to loosen the clamps. 3. Hook the ends of the water pump pulley lock on the bolts on the outside of the water pump pulley. 4. Remove the large nut on the fan with the 1-1/16 wrench by turning counter clockwise. 5. Replace the fan by holding the nut perfectly level with the water pump post & start the nut by hand. --------------------------------------------------------------------------------------
FGtech V53

The question is: How remove clutch in order to remove fan mounted on its engine-side face.

• Generally, the clutch drive half shaft must be uncoupled from coolant pump (impeller drive) half shaft using special wrench kit available as loaner from AutoZone (free with $79 approx deposit).
• Best done after shroud & radiator remove after coolant drained.

1. Uncouple coolant pump and fan clutch drive shaft(s) as follows:
   
   1. span across combo-pulley-sheaves-unit mounting bolt heads with large tool kit wrench, and
   2. span inline clutch coupling nut with small tool kit wrench. Then,
   3. turn small wrench (and coupling nut) CW while resisting with large wrench (CCW) to turn coupling nut until disengaged from coolant pump drive shaft.
2. Remove fan/clutch assembly.
3. Note direction of mounted fan hub and fan blades orientation to ensure proper re-assembly.
4. On rear of clutch assy, remove 4 bolts to disengage and remove fan.
5. Assemble new fan to clutch (or, preferably, new clutch and new fan) using new bolts and washers provided with fan.
6. Couple fan-clutch assy to coolant pump drive shaft as per opposite of uncoupling step 1, above. (Turn inline nut CCW to tighten...30 ft-lb.
7. Check that fan can be hand turned...CW.)
8. Rest shroud over and onto fan.
9. Replace radiator; remount shroud; reclamp hoses, and refill and air purge cooling system.

Replacement of 5.2 V8 water pump procedure
1. Remove the serpentine belt by rotating the main tensioner clockwise. You may want to leave it on to apply pressure when loosening the nut for the fan, however this does not always work.

2. 4 bolts retain the fan shroud. Simply loosen but do not remove all of the bolts until the fan nut is loose.

3. There are supposed to be four bolts on the water pump pulley to apply counter pressure with a 13mm wrench when loosening the fan nut (this nut has reverse threads so it's not righty tighty, lefty loosey.) At this point you might want to remove the idler pulley right above the water pump to make the following steps easier.

4. The manual says you need a special tool to loosen the fan nut. I couldn't buy it at the auto parts store because the water pump pulley both on the old one and new one did not have the 4 bolts but unthreaded holes instead. Dodge would not tell me what they do in this situation or sell any special tools to customers. Rude. So I used a strap wrench and wrapped it around the pulley and held tight while I unloosened the fan nut. Worked great.

5. Once the fan nut is loose, remove the bolts for the shroud and lift the fan and shroud out together.

6. There are three hoses (on the V8) that need to be removed from the water pump. You will need needle nose and other pliers to do this.

7. Mark the bolt at 12 o'clock on the pump for reference and start loosening them a little at a time clockwise laying them down in order as they are different lengths.

8. Remove the water pump and get ready to start scraping gasket. The upper part is difficult to see but be persistant. Who wants to see a leak after all this work.

9. The water pump has a coolant return hose that will need to be transfered to the new pump and a new o-ring replaced that is included.

10. Apply RTV high temp. silicone to the new water pump and the side of the gasket that faces the engine. Spread it thin. I had to break the habit of thinking more silicone=less chance of leaks.

11. Install the new pump and gasket and torque the bolts in 1/4 turn increments. Let the silicone cure as instructed on the package.

12. Start working your way back up this list, reversing the procedure, refill the coolant leaving the radiator cap off. Start the engine and turn on the heater. Add coolant mixture as necessary until full. Check for leaks and hope the new pump lasts a darn long time.

there are four nuts that you must remove at the front of the pulley between the fan. remove fan, fan shroud,loosen accessory belts. remove water pump pulley and the pump bolts will be exposed. check belts for replacement while you have them loose. reverse procedure to install.

you need special tool to hold the water pump puley and long 32mm wrench to brake loose fan clutch.
the thred is left hand , so you brake it loose clockwise.
you can also use just a wrench and hummer.
put 32mm wrench over fan clutch nut and by hitting the end of wrench with a little luck it is possible too
when you put it back you can use same procedure.
you may have enough room to change thermostat , by sliding fan assy. to the side without taking it out.

IF you are working on a 4 cylinder engine (2.2L), and if you have taken off all the preliminary stuff (fan, hoses, etc.) you probably know that the pulley under the fan is NOT the water pump pulley. The water pump pulley is just down and to the right (as you face the car) from the pulley that the fan rides on. There shouldn't be anything special about the bolts that hold the water pump in. A good socket wrench ought to handle the job.
If you are working on a 4.3L, then the water pump IS under the fan pulley. Shouldn't be anything special about those bolts either.
Hope this helps you.

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The water pump can be removed and installed without discharging the air conditioning system (if equipped).

1. Disconnect battery negative cable.
2. Drain cooling system. Refer to Cooling System-Draining and Filling.
3. Do not waste reusable coolant. If solution is clean, drain coolant into a clean container for reuse. WARNING: Constant tension hose clamps are used on most cooling system hoses. When removing or installing, use only tools designed for servicing this type of clamp, such as special clamp tool (number 6094). snap-on clamp tool (number HPC-20) may be used for larger clamps. Always wear safety glasses when servicing constant tension clamps. CAUTION: A number or letter is stamped into the tongue of constant tension clamps. If replacement is necessary, use only an original equipment clamp with matching number or letter.
4. Remove upper radiator hose clamp and hose at radiator.
5. The thermal viscous fan drive is attached (threaded) to the water pump hub shaft. Remove fan/viscous fan drive assembly from water pump by turning mounting nut counterclockwise as viewed from front. Threads on viscous fan drive: are RIGHT HAND. A Snap-On 36 MM Fan Wrench (number SP346 from Snap-On Cummins Diesel Tool Set number 2017DSP) can be used. Place a bar or screwdriver between water pump pulley bolts to prevent pulley from rotating. Do not attempt to remove fan/viscous fan drive assembly from vehicle at this time.
6. If water pump is being replaced, do not unbolt fan blade assembly from thermal viscous
7. Remove fan shroud attaching hardware (two bolts at bottom-two clips at top).
8. Remove fan shroud and fan blade/viscous fan drive assembly from vehicle as a complete unit.
9. After removing fan blade/viscous fan drive assembly, do not place thermal viscous fan drive in horizontal position. If stored horizontally, silicone fluid in viscous fan drive could drain into its bearing assembly and contaminate lubricant.
10. Do not remove water pump pulley bolts at this time.
    
11. Remove accessory drive belt as follows: The drive belt is equipped with a spring loaded automatic tensioner. Relax tension from belt by rotating tensioner clockwise (as viewed from front). When all belt tension has been relaxed, remove accessory drive belt.
12. Remove four water pump pulley-to-water pump hub bolts and remove pulley from vehicle.

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A special fan tool is required to remove the fan from the water pump. Yes it does unscrew. One part of the tool holds the bolts of the pulley while the other part unscrews the large nut on the water pump. Tool rental is available at some auto parts stores.

There is a special spanner wrench that you need to hold onto the water pump pulley (the 2 holes in the big pulley the belt rides on).
The tool has a Y shape to it with a handle coming off the bottom end of the Y. There will be 2 pins in the ends of the V that fit into the holes on the pulley (adjustable). You put the pins into the holes, grab the handle with the left hand, and put a 15 inch cresent wrench in the right hand onto the clutch nut. Pull up on the Y shaped tool handle with the pins, push down on the wrench to the left (counter clockwise) to un-screw the clutch from the pulley.
Then take the clutch off the fan after you have it out of the truck.
LEAVE THE BELT ON UNTIL YOU GET THE PULLEY LOOSE!!!
THEN, take the belt off, then the pulley/clutch asembly off, then the water pump (replace with a NEW - NOT REBUILT PUMP).
The new only costs 20 bucks or so more, and it is worth the headache of paying more while you have it apart. If the clutch is shot, the pump is close behind because of the vibrations ruins the seals/bearings on the pump, even though you cant hear the noise, it is there. Take the LOWER fan shroud completely off by removing the trans lines from the radiator. pull the fan out the BOTTOM of the Van. Leave the top shroud in place but take the screws out so you can manuever the lower shroud out. You also may have to remove the lower radiator hose and move it aside. Good time to change coolant anyway. And since you are in there on top, change the thermostat, while you are doing the cooling system service. Use a PREAMIUM BRAND thermostat, like a STANT, it will have a small vent hole with a valve in it hanging off the side edge of the thermostat that helps vent air from the system so it will not overheat. Trapped air can cause the cooling system to overheat, so dont put the thermostat in upside down! Point go's UP.
GOOD LUCK.

These numbers are in foot pounds water pump attaching bolts=30  water pump pulley attaching bolts=20 fan clutch to fan blade bolts=17 fan assembly to drive hub nut=42 thermostat housing bolts=17