Seized Fan clutch

[svr2600146]

Replacing water pump on 93 6.2 HmmWV. Have tried compressed air but no luck. Any suggestions.
I have been unable to remove the four 8mm hex bolts in order to move forward.

 

[NDT]

Toss all of it in scrap. If your pump is no good, and neither is the clutch, all you would gain are the fasteners.

 

[svr2600146]

Agreed. Whats the easiest way to get to out? The shroud and radiator are intact.

 

[Action]

You need about 90 psi to release it.

 

[svr2600146]

Didn't work. Had adequate pressure. Should the fan blade be cut off to remove the hex bolts attaching the fan assembly to the water pump pulley?

 

[Action]

I dont have that clutch to look at, but feel the engine side of the clutch for about 6 small bolt heads. They hold the plates on the back. Removing these may help free it up without cutting things.

YES, I just looked in the TM. The 6 screws hold on 3 plates. With them off, the 2 friction linigs should come out. You can see the complete assembly in an exploded view in the TM.

 

[Action]

THIS IS A PIC LINK, NOT AN AUCTION LISTING.

 

[FirstGen FBody]

i just freed mine up the other day. I sprayed it with PB blaster and let it sit for a few minutes. I did that 3 times. then i gave the back sides a few smacks with a pry bar and a hammer.

 

[ken]

I had to use a rubber mallet/dead blow hammer while applying air pressure. It took quite a few smacks while rotating it to hit more than one spot.

 

[Thecaptain]

As others have stated - those bolts are very difficult to break out. When I did it - had one person working the top side and one under the vehicle.