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01 CL500 Power Steering Pump - BIG RATTLE NOISE!!
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08-26-2006, 10:41 AM
ILUVMILS
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Join Date: Sep 2002
Posts: 3,067
I'm not exactly sure what purpose is served by the "ring" on the pulley, but I'd guess that it must provide some balance, or vibration damping (like a flywheel). After all, that's a tandem pump. One for P/S pressure, the other for ABC.
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