Use two wrenches. one will try to tighten while the other one will be taking off the nut. When you get to the last one you can hand thread two bolts in just enough to hold it with a screw driver holding against the bolts.
I know what you're talking about. The fan clutch screws directly onto the water pump shaft....there aren't any 1/2" head bolts like earlier cars/trucks....
those threaded-on fan clutches are a pain to take off. I can't remember if they're left hand thread or right hand. I think they're left hand thread.
I took my brother's off of his '94 F150 with a big crescent wrench and a piece of belt wrapped around the pulley. Even then, it wasn't the easiest thing to do. Looks like it might be easier to leave the belt on all of the pulleys and then try to back the clutch off with the crescent. Still might have to have someone help hold the pulley from turning somehow.
Never thought of that! And I do that every day....but with steel drain plugs screwed into cast aluminum engine cases. It's the only way to do it without damaging anything.
I took a plug out of a Yamaha R6 a while back with a 17mm socket & ratchet...broke the whole bottom part of the oil pan out because the steel plug seizes into the aluminum pan. Air chisel from now on! They bust loose almost immediately.
"it is better to appear ignorant than to open your mouth and remove all doubt"--Mark Twain
<font size=-1>[ This Message was edited by: mavman on 8/8/06 10:16am ]</font>
I found an awesome replacement for these pieces of SH*T, its an adapter made by flexalite that allows you to thread it on and replace the clutch set-up with a normal fan, it is either that or I am going over to an electric fan. What a screwed up design, I am more worried about damaging the pulley!!! I am going to Autozone to see if they have any tools, I have heard of a few style, and if not I'll use an air chisel.
There are special fan wrenches. You can get OTC or cheap ATDs that work just fine. This is nothing new ,Ford has used these for 20 years. Make sure you get it tight going back on, or upon shut off they can free wheel themselves right off and destroy your radiator.
I have done a few of them including my own '93 F-150 with a 4.9. I borrowed the special wrenches from a friend of mine, but the way that I got it off was to leave the serpentine belt in place to keep the water pump from turning, and then place a large screwdriver directly on the clutch, then hit the screwdriver very hard with a decent sized hammer opposite the direction of rotation. The clutch will spin loose after a few whacks. My buddy that lent me the wrenches is a Ford tech at a local dealership, and that is the way they get them all off. Try it, it will work.