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New D-14 Radiator and Rattling Noise

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Rogers View Drop Down
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Joined: 16 Sep 2009
Location: Georgia
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    Posted: 06 Oct 2019 at 7:01pm
I just put an aftermarket radiator in a D-14. The shroud had a diamond opening, and the fan blades hit. The original had a round opening, so I just cut it out like the original. The fan blades now clear a good 1/8 to 1/4 inch everywhere.

However, about every minute when running you hear a noise like something rattling. It is literally for a second then not for a minute or so, but its consistent in that it repeats every so often.

I don’t see any signs on the fan blades or radiator that its hitting, but the sound like something isn’t clearing with the rattle worries me.

Are there any ideas what the rattle could be? I have thought something is loose, but I have checked all the bolts and don’t see anything.

I did notice the overflow tube seems to be very close to the opening for neck of the radiator. I am thinking to put a piece of rubber there to eliminate that as a possible source of the rattle tomorrow.

 


Edited by Rogers - 06 Oct 2019 at 7:02pm
Think for yourself and be your own expert. Be willing to change your mind; however, willingness to change your mind doesn’t mean that you will. Blindly following any path is the pinnacle of insanity.
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JC-WI View Drop Down
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Joined: 11 Sep 2009
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Post Options Post Options   Thanks (0) Thanks(0)   Quote JC-WI Quote  Post ReplyReply Direct Link To This Post Posted: 06 Oct 2019 at 7:26pm
Could be just that simple.  Hope thats all it is.   Water pump/generator bearings good?
He who says there is no evil has already deceived himself
The truth is the truth, sugar coated or not. Trawler II says, "Remember that."
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Rogers View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Rogers Quote  Post ReplyReply Direct Link To This Post Posted: 06 Oct 2019 at 8:01pm
I put a new water pump, alternator, thermostat and hoses on while I had the front cowls off for the radiator replacement. The rattle just worries me because it don't know what it is.
 
When the radiator on my D-15 went bad. I had it re-cored. However, the local radiator shop went out of business several years ago. All the new radiators in trucks are aluminum with plastic tanks, so you don't need a repair man. You have to replace instead of fix. That means dealing with modifying new parts.
  
 
I know little things can get you. When my 14 wouldn't idle right all that was wrong was the bolt securing the manifold was almost rusted in to. I changed the manifold bolts hooked the spring to the new bolt and problem solved. I hope the rattle is the overflow tube. I can't figure what it is. I was hoping the vast knowledge on the forum might have an idea.
 


Edited by Rogers - 06 Oct 2019 at 8:05pm
Think for yourself and be your own expert. Be willing to change your mind; however, willingness to change your mind doesn’t mean that you will. Blindly following any path is the pinnacle of insanity.
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MACK View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote MACK Quote  Post ReplyReply Direct Link To This Post Posted: 06 Oct 2019 at 8:14pm
Take belt off and see if it still does it.     MACK
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Brian F(IL) View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Brian F(IL) Quote  Post ReplyReply Direct Link To This Post Posted: 07 Oct 2019 at 10:28am
Loose fan blade?
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