Big Radiator Fan "HUB"

[Pete]

Hector, mine does have the bracket, and we modified that with a piece of rubber hose over the ear of the bracket to keep it from moving to far toward the radiator.
The next time we see each other, I can show you what we did. My radiator has an "X" brace from the upper left corner to the bottom right corner and the upper right corner to the bottom left corner. This "X" brace is about 1/4" in diameter and on the inside of the radiator nearest the fan. The damage was done when the assembly hit the "X" brace shearing off the fins on the round aluminum portion causing them to penetrate the radiator. Guess I am not very good at explaining things, hope this will be clear enough to understand.

[ajducote]

Started getting a "Growling" noise from my fan whenever the clutch kicked in on the fan. So I pulled the fan today and I have a small problem.
I need to remove the clutch to be able to get the fan blades off of the fan clutch assembly. I think I am suppose to remove the 3 small nuts in the center, but they are very rusty and frozen. Before I attack this with large dangerous tools, does anyone know for sure if these three nuts are the correct one's to remove? I will post pictures in the next thread on how I removed the fan.

[MangoMike]

Andre,

I removed mine on the Mothership three summers ago. Unfortunately I've completely forgotten the procedure. I do however have some pixs that I'll provide here. Hopefully they will be somewhat useful. What I do remember was that fan assembly was heavier than crap to get out of it's cradle.
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[MangoMike]

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[ajducote]

Mango,

Thanks, your last picture answers my question. I am going to order a new assembly tomorrow morning. As soon as I am sure 1 is on the way I will tackle the 3 bolts holding it together.

[hhoppe]

Once again Mango Magic saved the day. Great pictures Mike.

[ajducote]

Mango,

In the last 2 pictures above in your last post.

The new top half of the clutch is different then the old one. Did you drill out all the bolt holes and move the ring that contacts the magnets from the old clutch to the new top hat?



Thanks

[JIM CHALOUPKA]

Andre, these are the new parts I received and they were used as they were furnished by Prevost, nothing added or modified.



JIM

[ajducote]

A big thank you needs to go out to Jim and Mango. Both of these fine gentlemen called me and were able to help me get this done. The problem is that the new part number has a different electric cable connection on the fan end, and the heat sink on the clutch end (the finned part) is made a little different then the old part. I got it mostly back together today, but a real bad thunder storm hit, and I had to stop. I hope to finish tommorow and then I will post pictures of how it went all back together.

[ajducote]

This is what I did to put things back together.

Attachment 5196
As received from Prevost
Original part number 550634
New part number as delivered 550837, cost $1175.49

Attachment 5197
Remove the 3 center nuts, and remove heat sink

Attachment 5198
Remove 3 bolts and remove ring

Attachment 5199
Placed on Pulley, not bolted to pulley, use as a work stand

Attachment 5200
Fan Installed

Continued in next post