Crankshaft Pulley Rubber Debonding - BMW Forum -

5-Series (E12,E28, E34, E39, E60) Chat relating to the BMW 5-Series of all generations. Specific models include: BMW 518, BMW 520, BMW 520i, BMW 530i, BMW 528i, BMW 530i, BMW 518i, BMW 524d, BMW 525i, BMW 525e, BMW 528e, BMW 540i, BMW 535i, BMW 520d, BMW 525td, BMW 525d, BMW 530d, BMW 525i/xi, BMW 530i/xi. (BMW 5-Series Forum)

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post #1 of 2 (permalink) Old 03-31-2005, 02:00 AM Thread Starter
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jeremydo is an unknown quantity at this point
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I recently got my 2001 525 wagon serviced, and was told that my crankshaft pulley (vibration damper) was debonding.
The car itself is feeling a little rough - not much, but when you've been driving every day for a few years, you get to notice even the slightest little bump and squeak.
The dealership told me they wanted $800 to fix it, so I told them I'll think about it.

So my questions are : what are the symptoms I would expect to see if this debonding were really taking place ? Can I see it for myself ? Where ? If it broke entirely, what would happen ?
And: $800 is a lot of money (for me anyway) - does this sound like a reasonable price to repair this part ?

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post #2 of 2 (permalink) Old 03-31-2005, 08:22 PM
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bgwoody is an unknown quantity at this point
You might be able to see the crankshaft pulley ( harmonic balancer)
wobble with good lighting. It should be rock steady when running. If not it won't be long before it tears up the front crank seal or worse. I would take to a qualified independent BMW service mechanic for a second opion. I don't know the price of the balancer but they aren't cheap.
I guess want I'm trying to say is don't ignore this warning.
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