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Just found this Hole


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Any idea why this hole wouldbe in the fan body? It still spins freely, engine runs really cool (even with the body on!), So the fan hasn't been a problem...yet.

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The only reason i can think of would be to create more friction at lower speeds.

My limited experience tells me to change it.

Any thoughts?

Thanks,

T

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to my admittedly unexpert eye it looks like damage rather than design with the irregular and rough edges

I'd say change it

no doubt someone with more experience will be along shortly to give a more expert opinion

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The only reason i can think of would be to create more friction at lower speeds.

I assume you are thinking of the viscous fan here? If so then that is wholly contained within the body of the fan - what you are looking at here appears to be a hole in the pulley body... Caused by goodness knows what but I would say that this IS damage and that it should be changed. Good luck getting the fan off... ;)

TwoSheds

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Any idea why this hole wouldbe in the fan body? It still spins freely, engine runs really cool (even with the body on!), So the fan hasn't been a problem...yet.

( ...)

The only reason i can think of would be to create more friction at lower speeds.

My limited experience tells me to change it.

Any thoughts?

Thanks,

T

Someone has tried to hold the pulley with a pry-bar and a piece of the casing has broken away.

Supposing that the edge of the crack is somewhat regular without futher cracks pointing into the casing, the impact on the overall strength of the pulley would be very limited.

Inspect the area with a magnifying glass, if small hairline cracks are found then the pulley should be exchanged, if there are no cracks the money and energy is probably better used elsewhere.

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Someone has tried to hold the pulley with a pry-bar and a piece of the casing has broken away.

Thanks All,

Good point, Never thought of that, makes sense now, seems like it would be better to use a strap or chain wrench to hold it.

I can get one used pretty cheap here, so I get one and clean it up, put it on when engine is out.

T

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