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  #11  
Old 02-01-2015, 05:32 PM
J-Mech J-Mech is offline
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Quote:
Originally Posted by Yosemite Sam View Post
The fans were set in a rubber that is mounted in a "hub", you can turn the fan without turning the shaft.

I don't know if they were originally designed to turn or not, pretty sure all of mine do now though.
Huh.....

The only machine I had for reference is now at my bro's in DC, so I don't have one to look at anymore.


I bet that they aren't supposed to move. The "glue" has probably deteriorated.
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  #12  
Old 02-01-2015, 05:35 PM
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drglinski drglinski is offline
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Quote:
Originally Posted by J-Mech View Post
Huh.....

The only machine I had for reference is now at my bro's in DC, so I don't have one to look at anymore.


I bet that they aren't supposed to move. The "glue" has probably deteriorated.
The fan does move. It spins with the driveshaft. The metal fan for my 147 does not spin independent of the shaft.
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  #13  
Old 02-01-2015, 05:36 PM
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Originally Posted by drglinski View Post
The fan does move. It spins with the driveshaft.
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  #14  
Old 02-01-2015, 05:45 PM
tobo127 tobo127 is offline
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Being the new owner of this well abused machine, it's no wonder I'm finding parts missing. The fan shroud is MIA along with the air baffle. Does everyone else have a fan shroud? And how about that air baffle? I'll look on the frame to see where these were originally attached. I saw the fan shroud on the exploded parts diagram but as of late I haven't heard anyone here mention anything except a plastic fan on these driveshafts, so the metal one is news to me. The replacement part (IH-394065-R1) is shown as a plastic fan with snap ring, no mention of a metal fan. The metal fan I have has a hub with two set screws. Where the fan blade is crimped onto the hub there is what appears to be a friction material on either side of the blade so the blade will turn in the hub (with pressure applied). If something really solid got in the way of the spinning blade it might help save the blades somewhat. Fingers would still come out bloody but a 1/2" tree branch might do no damage on a quick hit.

Thanks everyone, for all the good info!
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File Type: jpg 150201 Cooling fan.jpg (19.8 KB, 58 views)
File Type: jpg 150201 Cooling fan closeup.jpg (10.9 KB, 58 views)
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  #15  
Old 02-01-2015, 05:57 PM
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The later machines didn't have and air baffle or a fan shroud. I think the shroud disappeared with the metal fan. Unless your going for "original" I wouldn't worry about it.

Knowing how other things that turn at high rates of speed are mounted, I'm going to say that the rubber is for vibration. Not a clutch, or "safety" thing. And if a stick did actually get in that fan..... it would be bad. Plastic fan will flex to some degree. A metal one is either going to break, or chew the crap out of it. I will say..... we don't hear of the metal ones breaking very often.... but all of us have seen plastic ones with no blades anymore.
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  #16  
Old 02-01-2015, 06:29 PM
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Here is a pic of one of those metal fans,pardon the dirt,plastic ones are replacements on all NF,WF came with plastic from the factory.The shroud connects to the underside of the tunnel and it is held on by 4 screws.Be sure # 11 is installed.
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File Type: jpg For Sale Pics 454.jpg (27.1 KB, 54 views)
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  #17  
Old 02-01-2015, 07:16 PM
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ford4150 ford4150 is offline
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[QUOTE=tobo127;308931]Ford4150, which manual did that come from? I think that is what I saw recently.
If I can see it clearly enough, the dimension is 1 1/8" hub to flange?

Came from service manual page 2-39B. I have it on download, but I think it's in the tech library.
Yes, 1-1/8"
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