retmil46 had posted this over at KJcountry
Instead of ordering the Miller special tool and pins for holding the clutch pulley - Miller wanted a total of $130 for the tool and pins which are sold separately - NAPA sells a universal fan clutch pulley holding tool, which includes the screw in pins for holding a late model Chrysler face pin pulley, for $25.http://www.jeepkj.com/forum/showthread.php?t=46274
Instead of buying one of the flat thin fan clutch tools, which have a tendency to spread apart and round off the nut on the clutch, which is 36 MM, you can go to a place such as Northern Tool and buy a big combination wrench in 36 MM or 1 - 7/16 (which is 36.5 MM). I picked up the latter at Northern Tool for $15. Not only will these wrenches not spread out, they're stout enough and long enough that an adult of nominal strength should have no problem breaking loose and retorquing the new clutch to 75 to 100 ft/lbs.
I'd recommend breaking loose the nut on the old clutch before you begin pulling other stuff loose, just in case you run into difficulties or decide you need a second body to help.
I can put my 2 foot 1/2 inch drive breaker bar on the wide thin flat steel wrenches and never spread a wrench or rounded a fan clutch hub yet. It'a the width of the wrench that keeps it from spreading.
This is the spec of the pulley holder tool
Universal Pulley Holder
Product Line: NAPA Service Tools
Part Number: SER 3900
Features & Benefits Holds Both Bolted-On & Pressed-On Pulleys Found On Many Vehicles, Includes Pin Set Which Is 5 mm x 8 mm
Warranty Lifetime Warranty on All Non-Serviceable & Non- Disposable Products. Full Sets Do Not Qualify; Individual Items May. Tools Subject To Abuse or Misuse Are Not Covered. NAPA Hand/Service Tools Is Not Liable for Consequential, Incidental or Special Damages.
Attributes Universal Pulley Holder Length : 15"
Universal Pulley Holder Thickness : 2" <--- I don't where they measure the thickness but the metal is about 1/8 - 1/4 inch thick. Even with the pins install it's still not 2 inch thick