99 Spyder crankshaft pulley

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Milpay - 15 Jun 2006 16:43 GMT

I have a 1999 eclipse spyder; the crankshaft pulley fell off and it does
not appear to have mounting hardware. I put the pulley back on but a few
days later it fell off again. Is this something that needs to be pressed
on or somehow permanently mounted,or does worn belts/not sufficiently
tightned, contribute to this problem?

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Stewart DIBBS - 15 Jun 2006 23:35 GMT

>I have a 1999 eclipse spyder; the crankshaft pulley fell off and it does
> not appear to have mounting hardware. I put the pulley back on but a few
> days later it fell off again.

Was this the outer section of the pulley? Its a common problem: the outer
section is bonded to the inner with a rubber ring that fails. Get a new (or
used) pulley.

Stewart DIBBS
www.pixcl.com/lancerproject.htm

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simpleton - 16 Jun 2006 03:12 GMT

This pulley is actually a harmonic damper that is used to lessen vibration
caused when the crankshaft twists during engine operation.
There is an inner hub that is cast and an outer pulley that drives the
belts. Between them is a vulcanized rubber piece that fails, allowing the
two to separate.

JNZ has them for $101
http://www.jnztuning.com/catalog/product_info.php?products_id=322

Here's a page that helps explain the forces these dampers see and what
they're used for:
http://www.atiperformanceproducts.com/products/dampers/101/index.htm

>I have a 1999 eclipse spyder; the crankshaft pulley fell off and it does
> not appear to have mounting hardware. I put the pulley back on but a few
> days later it fell off again. Is this something that needs to be pressed
> on or somehow permanently mounted,or does worn belts/not sufficiently
> tightned, contribute to this problem?

Reply to this Message