GENERATOR 3.8L
DESCRIPTION
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.
OPERATION
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 Y type 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 Generator Ratings in the Specifications section at the back of this group 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.
REMOVAL - 3.8L
WARNING: Disconnect negative cable from battery before removing battery output wire (b+ wire) from generator. Failure to do so can result in injury or damage to electrical system.
1. Disconnect negative battery cable at battery.
2. Remove generator drive belt. Refer to 7, Cooling System for procedure.
3. Remove generator mounting bolts (1) and (3). Remove nut (2),
4. Unsnap plastic cover (1) from B+ terminal.
5. Remove B+ cable output terminal mounting nut. Disconnect terminal from generator.
6. Disconnect field wire connector (2) at rear of generator by pushing on connector tab.
7. Remove generator from vehicle.
INSTALLATION - 3.8L
1. Install generator mounting fasteners (1), (2), and (3) and tighten. Refer to Torque Specifications.
CAUTION: Never force a belt over a pulley rim using a screwdriver. The synthetic fiber of the belt can be damaged.
CAUTION: When installing a serpentine accessory drive belt, the belt MUST be routed correctly. The water pump will be rotating in the wrong direction if the belt is installed incorrectly, causing the engine to overheat. Refer to belt routing label in engine compartment, or refer to Belt Schematics in 7, Cooling System.
2. Install generator drive belt. Refer to 7, Cooling System for procedure.
3. Snap field wire connector (2) into generator.
4. Install B+ terminal to generator mounting stud. Tighten mounting nut. Refer to Torque Specifications.
5. Snap plastic cover (1) to B+ terminal.
6. Install negative battery cable to battery.