Generator DECOUPLER Pulley: Description
WARNING: This page is about a different car, the 2006 Dodge Grand Caravan, 2006 Dodge Caravan, and 2006 Chrysler Town & Country. However, it is still accessible from the selected car via links, so may be relevant.
The Generator Decoupler is a one way clutch. See Fig 1. It is attached to the generator and replaces the standard pulley. It is a non-serviceable item and is to be replaced as an assembly. It is a dry operation (no grease or lubricants). The operation of it is not temperature sensitive and has a low sensitivity to electrical load.