Liberty Sport 4WD L4-2.4L VIN 1 (2002)
Alternator: Description and Operation
GENERATOR
The generator is belt driven by the engine using a serpentine type drive belt It is serviced only as a complete assembly. If the generator fails for any
reason, the entire assembly must be replaced.
As the energized rotor begins to rotate within the generator, the spinning magnetic field induces a current into the windings of the stator coil. Once the
generator begins producing sufficient current, it also provides the current needed to energize the rotor.
The stator winding connections deliver the induced AC current to 3 positive and 3 negative diodes for rectification. From the diodes, rectified DC
current is delivered to the vehicle electrical system through the generator battery terminal.
Although the generators appear the same externally, different generators with different output ratings are used on this vehicle. Be certain that the
replacement generator has the same output rating and part number as the original unit. Refer to Specifications and see Generator Ratings for amperage
ratings and part numbers.
Noise emitting from the generator may be caused by: worn, loose or defective bearings; a loose or defective drive pulley; incorrect, worn, damaged or
misadjusted fan drive belt; loose mounting bolts; a misaligned drive pulley or a defective stator or diode.
Fig.5 Generator Decoupler Pulley (Typical)
GENERATOR DECOUPLER PULLEY
The generator decoupler is used only with certain engines. The decoupler is used in place of the standard generator drive pulley (Fig. 5).
The generator decoupler is used only with certain engines. The decoupler (Fig. 5). is a one- way clutch designed to help reduce belt tension
fluctuation, vibration, reduce fatigue loads, improve belt life, reduce hubloads on components, and reduce noise. Dry operation is used (no grease or
lubricants). The decoupler is not temperature sensitive and also has a low sensitivity to electrical load. The decoupler is a non-serviceable item and is
to be replaced as an assembly.
