960 broken fan pic

need a replacement but needs to have a diameter less than 15.5" i believe, any ideas where to find?
thanks dave
a227025.jpg
 
(quoted from post at 09:00:19 05/18/16) need the 6 blade, it has the smaller diameter, thanks for the heads up

If it were me and I was anxious to get back to work, I'd just take a half hour and oxy/acet weld it back together making sure both halves of the break and the 3/16 rod were molten . . . but I'm cheap and it gives me satisfaction. :)

I might braze the backside of the repair afterward as well.

. . . primering and painting the welded area so it won't rust.
 
thought about that tall t but too worried if the one blade tore off then could it happen to any of the others? i was lucky it
didn't go through the radiator,
thanks dave

i will weld it for a back up however when i get the time
 
Vidal,

I meant to ask you how it happened.
I assumed it had to have hit something that tore it
cause it looks bent up . . .
or did it just start cracking at the bolt hole?

Cheers,
T
 
It's not unusual for those fans to break. The fan on my 850 broke in the same location, It's just the metal fatigue after years of use and it broke at the weakest point. The fan may look "bent up" but it is made that way for balance I believe and of course air flow. I thought the same thing when I bought a new one and it was in the same shape.
 
DO NOT attempt to weld a fan blade.

Fan blade imbalance will quickly lead to metal fatigue resulting in catastrophic failure of the fan, radiator, etc.

People have been killed when impaled by blades thrown from rotating radiator fans.

Dean
 
More than likely your water pump bearing has play and the wobble made it break, if you do not replace the water pump it will break another fan, this fan uses the water pump with the press on pulley, there is a newer style water pump also available but it takes a different fan, bolt on pulley and spacer to convert it.
 
(quoted from post at 21:01:23 05/18/16) DO NOT attempt to weld a fan blade.

Fan blade imbalance will quickly lead to metal fatigue resulting in catastrophic failure of the fan, radiator, etc.

People have been killed when impaled by blades thrown from rotating radiator fans.

Dean
I completely agree Dean. Etc includes water pump too.
The blade would be almost impossible to balance even if
you could get the weld to hold the already fatigued metal.
 

I should have said.

There's no second chance even if you survive it...


I have seen water pumps break from a balance issue you always carefully inspect the fan assy... Its a go there is no in between..
 
What they said, scrap it....or weld it up and make a windmill/vane out of it. i made one out of a race'n car flex fan with a SMV sign tail.....I like the "is that a car fan?" comments. lol

Doesn't hurt to take a glance at a spinning fan once in a while for true. Doesn't take much when working on the front of an engine for a forearm to tweak a blade out of alignment.
6-blade works great, but are a bit loud.
I replaced a 6-blade once with a 2-blade, still cooled fine.
 
Oh is this what they meant by FORD . . . Fix or Repair Daily?

Cause in all my years of GM trucks and cars, nothing but old stuff, I've never seen even a cracked fan and especially not a fan failing from metal fatigue.

Sounds a little unreal to me . . . after all how different is a tractor engine to old truck engines.

so the metal fatigue part is probably glorified B.S.

The water pump like you're saying, is probably the only culprit besides something whacking the fan blades.

The fan on my 53 GM truck flying apart on it's own from fatigue?
Not in my lifetime..
 
Problem is that 3.5" extension on the snout of the pump.
Sets up the vibration and then if someone doesn't catch a fried bearing, or loose bolts in time, I can see all hell breaking loose
and blades flying through the hood.

Personally except for shoddy manufacturing, I can't imagine not catching a pump problem before the pump and fan flew apart.
 
Years ago, while working part time as a pump jockey/mechanic while in college, I diagnosed a vibration in a customers GMC 2 (?) ton truck with V6 gasoline engine. I quickly found a missing fan blade. You simply cannot imagine the amount of vibration caused by the failure.

Several years later, a motorist was killed in Dayton, OH when he stopped his car to investigate a vibration. While inspecting the engine with the hood open and the engine running, another fan blade was thrown from the fan and impaled him in the chest. He died on the spot.

Fan blades do fail from metal fatigue resulting from multiple imbalance issues.

But, hey, such is glorified BS....

Dean
 

We sell tractor parts! We have the parts you need to repair your tractor - the right parts. Our low prices and years of research make us your best choice when you need parts. Shop Online Today.

Back
Top