New Aluminum fan, play in shaft

[stickshift]

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]

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]

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]

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

[Ramman]

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

[Gary WA]

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Originally Posted by stickshift

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]

Investigate and repair - not safe to drive as is.

[J Franklin]

Originally Posted by Mulletwagon

Investigate and repair - not safe to drive as is.

Please expand your thought on this. I can't see any safty issue.

[stickshift]

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]

Originally Posted by Ramman

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!!!