Repair Safety Notice:
This information is for general instructional purposes only. Vehicle repair can be dangerous.
Verify all information, follow manufacturer service procedures, use proper tools and safety equipment,
and consult a qualified repair shop when needed.
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CARADIODOC
CAR REPAIR CONTRIBUTOR
34,308 POSTS
That pulley is often a cast iron ring on the outer hub. It has a gel layer that glues the two pieces together. Very often that gel layer lets go. The auto parts stores have large books full of replacement vibration dampers.