I have a 92, ford f250, international 7.3L. The water pump had gone on me and I need to change it. I see that I need a clutch wrench, but don't have one... has anyone done htis job before, or maybe know of any ides to get at it. I thought of using heat on it and then a pipe wrench with a snipe(pipe) to hold back the fan attached to it. Any input would be helpful.

thanks

 

i went to autozone they have loaner tools you put up a deposit but you get that back when you bring the tool back

 

I just finished doing mine on my 88 7.3

The clutch fan nut was seized so the tools (one part was a sleeve that fits over the 4 mounting bolts, the other a thin wrench for the big nut) slipped off when i cranked down on it. I chose to remove the rad, shroud, and pull the whole assembly off, fan in all. Sitting on the bench in a vice worked well.

Another way of doing it is to use some good penetrating oil, sit for a while, place a block of wood in between the belts and the pully to stop it from turning. You can smack the wrench with a hammer but only if it is yours

Bear in mind this is a reverse thread on that nut so it comes off in reverse to a regular nut.

If you can use an air hammer on the nut, that can make quick work of it too.

Good Luck

DU.

 

i held the pully wile dad hit the nut which has backwards threads with a long punch and it came right off

 

just get your 1 7/8 wrench out, put it on the nut, and hit the wrench with a bfh(big fing hammer) and remember, it is left handed threads, so hit the wrench from the left going towards the driver side..........Dustin

 

that might work if its in the truck but mine are sittin in the garage you would still have to hold the pully somehow

 

built a blocking wrench get a welder or a buddy to do it for you.make about a 4 foot T-handes and on the T welt 2 small peices or 1/2 in pipe about 3/8 long or so.match those to the spaceing between 2 bolt heads on the pully.boda boom you got a blocking wrench then you slide your 1 7/8 infront of it on the nut and bingo fan clutch off.I'll post some pic of the one I mad.

 

When you get it off, put some anti-sieze on the threads so you can get it off again someday!

 

make sure when you put it back on you crank on it if not it will come off. both times i have seen the fan come off after a water pump job it hit the radiator and destroyed it. you might want to consider putting lock tight on it

 

Locktite is a much better thing to put on those threads than never sieze.
Radiators are almost 400 dollars now.
If the fan comes off at high RPM, it makes a very large hole in the radiator.

 

Well, I've never seen or heard of one coming off that was put on correctly in the first place... after all, it's reverse thread... but my exposure is fairly limited so I defer to those with more experience. It may not mean much in the overall scheme of things but mine's has anti-sieze on it for at least ten years. When I changed the water pump the first time, it was a serious ***** to get off. I can't imagine how hard it would be to get off with Locktite. Anyway, I guess it's one of those "to each their own" things base on our personal experience. Yeah, mine has anti-sieze but it's on there very tightly!

 

With locktite on the threads you don't have to pound the nut tighter when you install it.
When you want to remove it, a little heat and it comes right off.

Yes the left hand threads tighten the fan when the engine is accelerating, but it also runs the rather heavy fan off while decelerating.

I lost one after a fan clutch change at close to 3000 RPM. The hole in the radiator was the same diameter as the fan. New radiator, new fan blades and new antifreeze was almost 500 dollars. Locktite the fan clutch onto the water pump and no more problems.

During the engine swaps for the failed reman engine, the reman company was paying to swap the engine at a shop. I told the guys doing the swap to locktite the fan on because it had run off before taking the radiator out with it. I was not there when they fired the engine the first time, but you should have seen the look on their face when they told me the engine fired fine, it was setting there idling and they turned the key off. Then the fan fell out on the floor. 1/2 tube of red locktite later they started the engine again. This time when they shut it off the fan stayed where it was supposed to. That one was a little fun to get off.

 

Point taken! I guess I'll have to start sweating!