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To revive a dead thread in case anyone is interested: The cause of fan-clutch rattle is due to the holes for the guide pins on the internal piston being slightly out of round, allowing a small amount of movement of the fan assembly relative to the belt driven assembly when the clutch is...

I'm not sure I understand what you mean. Are you talking the nuts that hold the fan to the clutch? Or are you talking about hardware that holds the fan blades together? When mounting the fan to the clutch I made sure the nuts were snugged up. If this is the part you are referring to, I will go...

I don't think so. Before installation I examine each blade for looseness or damage, and after installation I pushed and pulled on them and confirmed that nothing was loose. It could be one of the three bearings in the clutch. I added grease to one of the two bearings in the fan-housing; the...

I reinstalled the fan clutch today and took the vehicle for a drive. This is both good and bad news. The good news is installation was quick and everything was functioning afterward. The "bad" news is that the rattle has diminished significantly, but not ceased entirely. The fan seems to be...

Hi Jerryv, I don't plan on using a new belt. The one that was installed still has a lot of life left on it, so I will replace it when it needs to be. :-D As for the reassembly: What I started off with was putting the piston/thrust plate in the housing for the fan. I lightly greased both...

Alright, here is my progress so far. I have completely disassembled the clutch, keeping in mind its function as I examined the parts. I am not yet certain what would be causing the rattling. It may be some of the bushings/spacers that I found... they were a bit loose, but I can't imagine they...

I don't have that issue, but having just taken the clutch apart I think I have an answer for you. Short answer is that one clutch face is sealed by two o-rings. On the bell for the fan, there is a small opening through which air goes to provide pressure that counteracts a spring that keeps the...

EDIT: Found it as an Evans FC200158, same one as Brasco (post 4) has in this thread. It is probably because the studs were rusty, but I was able to unscrew all but two studs instead of just removing the nuts. Looks like I'll have to get some red loctite on it when reinstalling. I'll have to...

I found that the fan is tight to the clutch with no movement perpendicular to the axis; it spins freely by hand without binding or wobble. It is only when it comes on and the engine is under load at idle that it sounds like someone is clanking metal plates together.

Just checked the nuts on the front and they're all tight. I had a better look at the whole assembly, and it seems like the fan clutch will be a bit of a pain to service. EDIT: Had to re-read the TM, it looks like just the fan and shroud need to be removed first, which means getting the clutch...

I also experience this rattle when the fan kicks on. It is quiet when at idle in neutral, but when the vehicle is at a stop, the brakes applied, and the vehicle in 1st gear, the rattle becomes loud. I haven't noticed any issues with the fan turning on/off, or any problems while spinning, just...