having a hard time getting the fan/clutch off of a friends van. it is threaded on to the water pump and we can't get it off. we did manage to remove the water pump with the fan still attached. it is hard to get the leaverage to turn the big nut. anyone know any tricks to help us out? thanks

I put a large wrench on it and smacked it with a hammer. I`m sure there is a better way but it worked for me.

I used vise grips and a BFH to wack it

its left hand threds also..

Air chisel with a blunt bit. works every time. Bust it loose and should come off by hand. Hand tighten to reinstall,the rotation of the engine will tighten it.
Doug

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its left hand threds also..

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I`m pretty sure mine was right hand threads. It should say on the fan shroud IIRC

Left hand threads.

WATER PUMP - V-6 AND V-8 ENGINES
REMOVAL
The water pump on all models can be removed without discharging the air conditioning system (if equipped)

The water pump on all gas powered engines is bolted directly to the engine timing chain case/cover.

On all 3.9L/5.2L/5.9L gas powered engines, a gasket is used as a seal between the water pump and timing chain case/cover.

If water pump is replaced because of bearing/shaft damage or leaking shaft seal, the mechanical cooling fan assembly should also be inspected. Inspect for fatigue cracks, loose blades or loose rivets that could have resulted from excessive vibration. Replace fan if any of these conditions are found. Also check condition of the thermal viscous fan drive. Refer to Viscous Fan Drive in this group.

Disconnect negative battery cable from battery.
Drain cooling system. Refer to Draining Cooling System in this group.
Do not waste reusable coolant. If solution is clean, drain coolant into a clean container for reuse.

Remove windshield washer reservoir tank from radiator fan shroud. Refer to Windshield Wiper and Washer Systems.
Disconnect the coolant reserve/overflow tank-to-radiator hose at the tank.
Remove the four fan shroud mounting bolts at the radiator Typical Fan Shroud Mounting Do not attempt to remove shroud from vehicle at this time.
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 a matching number or letter.
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 a matching number or letter.

Remove upper radiator hose at radiator.
The thermal viscous fan drive is attached (threaded) to the water pump hub shaft Fan Blade and Viscous Fan Drive - Typical Remove the fan/fan drive assembly from water pump by turning the mounting nut counterclockwise (as viewed from front) Threads on the 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 the water pump pulley bolts Fan Blade and Viscous Fan Drive - Typical to prevent the pulley from rotating.
If water pump is being replaced, do not unbolt fan blade assembly Fan Blade and Viscous Fan Drive - Typical from the thermal control fan drive.
Remove fan blade/fan drive and fan shroud as an assembly from vehicle.
After removing fan blade/fan drive assembly, do not place the thermal viscous fan drive in the horizontal position. If stored horizontally, the silicone fluid in the viscous drive could drain into its bearing assembly and contaminate the bearing lubricant.
Do not remove the water pump pulley bolts at this time..
Remove accessory drive belt as follows: The drive belt is equipped with a spring loaded automatic tensioner Belt Tensioner - 3.9L V-6 or 5.2/5.9L V-8 LDC-Gas Engines Belt Tensioner - 5.9L HDC-Gas Engine
3.9L V-6 or 5.2/5.9L V-8 LDC-Gas Engines: Relax the tension from the belt by rotating the tensioner clockwise (as viewed from front) Belt Tensioner - 3.9L V-6 or 5.2/5.9L V-8 LDC-Gas Engines When all belt tension has been relaxed, remove accessory drive belt.
5.9L HDC-Gas Engine: Relax the tension from the belt by rotating the tensioner counterclockwise (as viewed from front) Belt Tensioner - 5.9L HDC-Gas Engine When all belt tension has been relaxed, remove accessory drive belt.
Remove the four water pump pulley-to-water pump hub bolts Fan Blade and Viscous Fan Drive - Typical and remove pulley from vehicle.
Remove the lower radiator hose and heater hose from water pump.
Loosen heater hose coolant return tube mounting bolt Coolant Return Tube - 3.9L V-6 or 5.2/5.9L V-8 LDC-Gas Engines Coolant Return Tube - 5.9L HDC-Gas Engine and remove tube from water pump. Discard the old tube O-ring
Remove the seven water pump mounting bolts Water Pump Bolts - 3.9L V-6 or 5.2/5.9L V-8 Gas Engines - Typical .
Loosen the clamp at the water pump end of bypass hose Fan Blade and Viscous Fan Drive - Typical Slip the bypass hose from the water pump while removing pump from vehicle. Do not remove the clamp from the bypass hose.
Discard old gasket
CAUTION: Do not pry the water pump at timing chain case/cover. The machined surfaces may be damaged resulting in leaks.

You should also be able to tell by the replacement pump what you have as far as left or right hand. I think it will be right hand also.

If the fan and fan drive are reverse rotation they should be clearly marked REVERSE, apparently both forward and reverse were used in the same year depending on accessories and serpentine belt pulley arrangement.

Its right hand threads.Ive removed hundreds and they are right.Ford is one of the few that has Lhand.I use the air chisel method.It works and you just have to get it to barely move and they spin right off.A regular chisel will work if you have it off.Just have someone hold the impeler part so it cant move get it on a flat and give the chisel a smack with a hammer.It works everytime.Rocky

I think the only left hand thread fan clutch hub is used on the Cummins Diesels.
I know my '92 is left hand thread for sure.

I use the punch and hammer method while the pump is on the car both to remove and install.

may be it was right hand thred

been a while,93 Dak 5.2,seems that I figured it out by looking at the new pump and it was revers rotation on the pump from the way the serp belt run

like I said it been a while on that one