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-   -   New Aluminum fan, play in shaft (https://www.fordbarn.com/forum/showthread.php?t=329664)

stickshift 08-11-2023 10:06 PM
New Aluminum fan, play in shaft
 

I pulled the water pump and removed the time bomb two blade fan. Installed the new aluminum fan without any issues, reinstalled pump and was admiring how well balanced and perfectly in-line the blades are. Then, I noticed the shaft moving in and out. I shut off the engine and moved by hand in/out about 1/8 to 3/16 inch. I didn't notice this before with the old fan, but then I wasn't really looking either. My question is: could something have come loose while the water pump was out? I didn't really look to see how the impeller was mounted to the shaft, but I did see a collar with a set-screw on the fan side of the shaft. I checked to see if it was tight and it was. Before I tear it apart again, it this kind of play acceptable? There is no wobble or side to side play.

Synchro909 08-11-2023 10:11 PM
Re: New Aluminum fan, play in shaft
 

If your water pump has one of these https://www.snydersantiqueauto.com/e...oppingcart.htm it may have moved on the shaft, giving you the extra movement.

Jim/GA 08-11-2023 10:11 PM
Re: New Aluminum fan, play in shaft
 

Instead of leaving it like this, you would be better off loosening the set screw on the collar and sliding the collar back to where there is no movement in and out. That will require you to pull the new fan off to get to the collar.

stickshift 08-11-2023 10:23 PM
Re: New Aluminum fan, play in shaft
 

Thanks guys, I guess I know what I'm doing tomorrow.

Ramman 08-12-2023 09:33 AM
Re: New Aluminum fan, play in shaft
 

Synchro, me thinks there's a hole in your shopping cart.

Gary WA 08-12-2023 11:17 AM
Re: New Aluminum fan, play in shaft
 

Quote:
Originally Posted by stickshift (Post 2247072)
I pulled the water pump and removed the time bomb two blade fan. Installed the new aluminum fan without any issues, reinstalled pump and was admiring how well balanced and perfectly in-line the blades are. Then, I noticed the shaft moving in and out. I shut off the engine and moved by hand in/out about 1/8 to 3/16 inch. I didn't notice this before with the old fan, but then I wasn't really looking either. My question is: could something have come loose while the water pump was out? I didn't really look to see how the impeller was mounted to the shaft, but I did see a collar with a set-screw on the fan side of the shaft. I checked to see if it was tight and it was. Before I tear it apart again, it this kind of play acceptable? There is no wobble or side to side play.
That was a fix for the shaft movement!Better to redo pump and not use that collar on shaft.

Mulletwagon 08-12-2023 03:08 PM
Re: New Aluminum fan, play in shaft
 

Investigate and repair - not safe to drive as is.

J Franklin 08-12-2023 04:00 PM
Re: New Aluminum fan, play in shaft
 

Quote:
Originally Posted by Mulletwagon (Post 2247224)
Investigate and repair - not safe to drive as is.
Please expand your thought on this. I can't see any safty issue.

stickshift 08-12-2023 05:21 PM
Re: New Aluminum fan, play in shaft
 

I removed the water pump and adjusted the collar for zero play. Greased zerks while out and inspected seals and rotation. All good. Reinstalled and back in business. Next time I'll take my time and do the job once.

Synchro909 08-12-2023 06:55 PM
Re: New Aluminum fan, play in shaft
 

Quote:
Originally Posted by Ramman (Post 2247157)
Synchro, me thinks there's a hole in your shopping cart.
Ha ha ha, It took me a while to work out what you meant. There has been a hole in my wallet since the day I got married!!!


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