Mopar R5233449 40/90 NIPPONDESO(O/W 522774

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Due to the specialized training and equipment needed to test and service the alternator, it is recommended to take the vehicle to a dealer or repair shop with the proper equipment if a problem arises. If the vehicle has considerable miles on it, a good alternative is to replace the alternator with a rebuilt unit.

Whenever working on the electrical system or using a booster battery to start the engine, it is important to take certain precautions to avoid damaging the alternator. Firstly, ensure that the battery cables are never reversed as this can result in damage to the alternator diodes. The negative (-) cable should always be grounded, while the output (+) cable should never be grounded and should always be connected to the positive battery terminal. Avoid using a high voltage tester on the alternator and do not operate the engine with the voltage regulator plug disconnected. When removing the alternator or disconnecting its wiring, always disconnect the negative battery cable first. It is crucial to never operate the engine with the battery-to-alternator cable disconnected. Additionally, remember to disconnect the battery cables before charging the battery from an external source and always observe correct polarity when using a booster battery or charger.

With the ignition switch in the Off position, disconnect the negative cable at the battery and place it out of the way. Disconnect the alternator wires, marking each wire and terminal for correct reinstallation. Loosen and remove the drivebelt by loosening the adjusting and mounting bolts. Remove the mounting/adjusting bolts, followed by the pivot bolt and nut to separate the alternator from the engine. To install the alternator, place it in position and install the pivot bolt and nut finger-tight. Install the drivebelt and then the locking/adjusting bolts, adjusting the drivebelt tension and tightening the locking bolt. Finally, tighten the pivot bolt and nut.

The alternator is operated by a drivebelt turned by the crankshaft pulley.

The alternator requires very little maintenance because the only components subject to wear are the brushes and bearings. The bearings are sealed for life. The brushes should be inspected for wear after about 75,000 miles (120,000 km) and the length compared to the Specifications. Regular maintenance consists of cleaning to remove grease and dirt, checking the electrical connections for tightness and adjusting the drivebelt for proper tension.

Detach the electrical connector(s) from the alternator.