40series

im rolling WTF

Isak81

Take the water pump off with the fan.

RacinRust

You turning it in the correct direction ? Righty Tighty, Lefty Loosy.

Smitty2000

iTrader: (1)

If you have a proper water pump pulley holding tool and a big enough crescent wrench that gives you enough leverage plus a BFH to hit the wrench, it should be no problem to break loose.

hog

Looking from the front that big nut has to turn Counter-Clockwise, or if you have a large open ended wrench/crescent wrench straight up from the nut, you have to whack it towards the passenger side of the truck.

I use a large open ended wrench(36mm) and hit it with a hammer to shock it like an impact wrench.

This is a completley moronic way to mount the clutch fan, there are lots of shadetree mechanics that have issues with this.

I bought a tool that holds onto one of the waterpump pulley bolt heads, with a big open ended crescent wrench on the nut, and the tool holding the waterpump still, I pulled on the crescent wrench(36mm) to the passenger side of the vehicle, and bent the **** out of the special tool, the Kent Moore tool is better.

Kent Moore makes a tool kit for this J-46406-1 holds the waterpump from turning, and J-41240-2 is a crowfoot wrench which grabs the nut and you use a 3/8" socket or Johnson bar to turn the nut.

The kit together is J-46406-A and costs around $130. The key is imobilizing the the waterpump pulley. The amount of force required will cause the waterpump pulley to spin even if the serp belt doesnt move. These can be a real bitch.

Example of the kit Fan Clutch Remover/Installer Set J-46406-A

Its also good for J-46406 will fit all new (Gen III V8, 2.2L, 8.1L, & 6.6L) engine applications, as well as previous 5.0L, 5.7L, and 7.4L applications, and has the necessary leg length to fit the pulleys correctly. Its pins are also sized so that its face will fit flush against the pulleys to eliminate pins breaking.

peace
Hog

1969x11

iTrader: (38)

I use a set of vise grips to lodge the pulley and then a big crescent wrench.

Atomic

iTrader: (42)

Put a coat hanger or other thick wire through one of the pulley holes and secure the pulley from turning.

Brian68

If you live in Michigan, the threads are probably rusted badly enough to just replace the pump and fan w/clutch. If it doesn't come off with the vise grip trick above, you might try heat, although it might ruin the clutch. I had 100% luck using a 1 7/16" wrench or close to it anyway, and a large footed prybar like this one. Ladyfoot set

Sears carries this tool much cheaper, you could also try looking for a nail puller at Lowes or wherever. The idea is to wedge the back side of the pulley with the tool against the passenger side of the pump. It works really well since the pump comes with the pulley anyway. You can also tighten the nut this way too.