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Type :
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Alternator
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Specification :
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24V 55A
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Pulley :
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8PK
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Brand :
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NUOJIN
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Number :
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37300-48100
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Quality :
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Remanufacture
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Delivery time :
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30 days
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The installation of the 24V 55A generator suitable for Hyundai models can follow the general disassembly and assembly logic of Hyundai automotive generators, and be operated in combination with the electrical wiring characteristics of 24V generators. The detailed installation steps below balance practicality and safety:
Park the vehicle in a flat and safe area. After turning off the engine, wait for it to cool down completely to avoid scalds from high temperatures. Then disconnect the negative cable of the storage battery. If the vehicle's radio or navigation system is equipped with an anti-theft code, make sure to record it in advance to prevent the device from being locked after power failure.
Prepare appropriate tools such as sockets, torque wrenches, 12# and 14# tools, and insulating gloves. Meanwhile, inspect the new 24V 55A generator to ensure that the pulley rotates smoothly, there is no damage to the appearance, and no looseness in the core components.
Place the new generator steadily on the mounting bracket in the engine compartment. Fine-tune its position to align the fixing bolt holes of the generator with those on the engine bracket accurately.
Screw on the upper and lower fixing bolts first, but do not fully tighten them. This reserves adjustment space for subsequent drive belt tension adjustment and avoids difficulties in belt installation caused by over-tightening during the initial stage.
If the generator requires disassembly and overhaul, first carefully place the rotor back into its original position. Then install the stator and silicon rectifier assembly, tighten the fixing screws and nuts of the stator coil joints, and fit the protective cover of the silicon rectifier assembly on the rear end cover. After installation, simply check the fit of the components to ensure there is no jamming or looseness, laying a solid foundation for subsequent electrical connections.
For the 24V generator, connect the dedicated pin wires correctly in the following way: Locate the B+, D+, W, and E pin interfaces on the generator. Connect the B+ interface to the positive line of the vehicle's storage battery, the D+ interface to the positive terminal of the voltage regulator, the W pin to the negative terminal of the voltage regulator, and the E pin to the vehicle's ground wire to achieve negative conduction.
Subsequently, find the wiring connector of the generator, insert it smoothly, and confirm that the buckle is securely locked. Ensure all wiring connections are tight to prevent sparking caused by poor contact.
Fit the drive belt around the generator pulley and the corresponding idler pulley in accordance with the belt routing path marked in the engine compartment. Use a tool to loosen the belt tensioner. After the belt is properly fitted, adjust the tensioner to achieve moderate belt tension—ideally, pressing the middle part of the belt should result in a sag of 1 to 2 centimeters. During installation, slightly move the generator if necessary to help the belt fit precisely into the pulley grooves and prevent belt misalignment and slipping.
Use a torque wrench to fully tighten the upper and lower fixing bolts of the generator in accordance with Hyundai's vehicle specifications, so as to avoid resonance noise during operation. If any surrounding pipelines or brackets were moved during installation, reset and fasten them simultaneously.
Reconnect the negative cable of the storage battery. After starting the vehicle, use a multimeter to detect the output voltage and ensure it remains within the stable range suitable for the 24V system. At the same time, observe the operating status of the generator to confirm there is no abnormal noise, no belt slipping or deviation, and that all electrical equipment can be supplied with power normally. The installation is completed once all these conditions are met.
(Integrated with Hyundai's vehicle structural characteristics, 24V electrical system specifications, and adaptation requirements for commercial/heavy-duty vehicles, including safety protection, precision control, and fault prevention)
Mandatory power disconnection procedure: First disconnect the negative battery cable (24V systems present higher short-circuit risks than 12V systems; disconnection sequence: Negative → Positive; reconnection sequence: Positive → Negative). Wait for the engine to cool completely (temperature < 40℃) before operation to avoid high-temperature burns or electrical arcing.
High-voltage protection equipment: Wear insulating gloves with an insulation class ≥ 1000V and safety goggles. Never touch terminals or pins (e.g., B+, D+) directly with hands to prevent electric shock or short-circuit arcing.
Anti-theft system and auxiliary power handling:
If the vehicle is equipped with an anti-theft system (code-protected radio/navigation), record the security code in advance before power disconnection to avoid device lockout.
For commercial vehicles (e.g., Hyundai light trucks, buses), additionally disconnect the auxiliary power supply to ensure full vehicle power cutoff.
Required tools: Use compatible tools including sockets (matching bolt sizes M10/M12), a torque wrench, and insulated-handle tools. Never use adjustable wrenches or brute force to tighten bolts, as this may cause thread stripping or bracket deformation.
Generator specification requirements: The new generator must meet Hyundai's original factory standards for 24V 55A (part number must correspond to the vehicle's VIN). Mixing 12V generators or generators of different power ratings (e.g., 55A vs. 80A) is prohibited, as it will result in charging system incompatibility and burnout of electrical components.
Pre-installation inspection of the new generator:
Ensure the pulley rotates smoothly without jamming.
Verify the silicon rectifier is free of damage or fluid leakage.
Check that terminals are free of oxidation and corrosion.
Confirm the 24V dedicated voltage regulator functions normally (to prevent overvoltage/undervoltage caused by regulator failure).
References：
Regarding the previously provided core precautions for installing the Hyundai 24V 55A generator, the three referenced sources have different verifiability statuses. Meanwhile, some content can be cross-corroborated with industry universal specifications and public maintenance data. The specific explanations are as follows:
The labeling of this source conforms to the conventional naming format of Hyundai's official technical documents. Such technical service bulletins are typically the core basis for the maintenance of Hyundai models. However, the full text of this specific bulletin (No.: 28-09-07) has not been retrieved through public online channels. Nevertheless, the content mentioned in the precautions—such as the torque requirements for generator mounting bolts and wiring specifications—is consistent with the universal practical standards for Hyundai generator maintenance in the automotive repair industry. For example, the requirement to control bolt torque aligns with the core principle outlined in the generator technical service guide compiled on
Docin.com, which states that "generator fastening bolts must have their tightening torque controlled according to corresponding specifications."
This is a genuinely existing international standard. However, the core focus of this standard lies in general safety requirements for electric vehicles, such as electrical safety and mechanical safety, rather than being a specialized specification exclusively for 24V generator installation. The content related to 24V system power disconnection protection and circuit insulation mentioned in the precautions complies with the overall safety management principles for vehicle electrical systems specified in this standard, representing the specific adaptive application of this international standard in the scenario of generator installation.
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