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Type :
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ENGINE STARTER
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Specification :
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24V 7.0KW
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Number of feet :
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11T
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Brand :
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NUOJIN
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Number :
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65.26201-7070 DH300-5
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Quality :
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Remanufacture
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Delivery time :
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10DAY
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The Daewoo 24V 7.0KW starter is mostly compatible with heavy-duty equipment such as heavy trucks and forklifts. Compared with small-power starters, it has stricter requirements for installation torque, line resistance, and gap precision. Below is a standardized installation method adapted to its heavy-duty characteristics. For operation, it is recommended to refer to the maintenance manual of the corresponding heavy-duty equipment for precise construction:
Wear insulated gloves, goggles, and oil-resistant work clothes to avoid electric shock from high-voltage circuits and injuries from flying parts. Prepare a set of metric socket wrenches, a ratchet wrench, a torque wrench, a multimeter, cleaning agent, and anti-rust lubricant. Since the starting current of this starter can exceed 300A, first disconnect the negative terminal of the 24V high-capacity storage battery, and keep the terminal away from metal components to eliminate short-circuit hazards.
Verify that the 24V voltage and 7.0KW power of the new starter match the original factory specifications of the equipment. Check that the housing has no cracks, the drive gear has no missing teeth, and the terminal posts have no corrosion. Thoroughly clean the mounting bracket on the engine with a cleaning agent to remove oil and rust, ensuring a flat mounting surface to avoid damaging the starter or engine block due to uneven stress during heavy-duty operation. Meanwhile, use a multimeter to test the storage battery, ensuring its internal resistance is between 5.8 - 9.8 milliohms when fully charged at room temperature, to prevent insufficient power supply from affecting startup.
Fit the starter tightly against the mounting bracket, ensuring the drive gear is accurately aligned with the engine's flywheel ring gear. Insert the original-specification fixing bolts and hand-tighten them until snug. This model of starter mostly adopts a three-hole bolt fixing mode, and a diagonal tightening method should be used to gradually tighten the bolts. Use a torque wrench to fasten them to the heavy-duty equipment standard torque of approximately 50N・m (specific values refer to the corresponding equipment manual). Do not over-tighten with brute force to prevent housing cracks, nor leave them loose to avoid severe vibration during heavy-duty startup.
First, distinguish between the 30-terminal main power connection post and the 50-terminal control connection post of the starter. Connect the dedicated positive cable of the storage battery to the 30-terminal, and tighten the fixing nut with a torque wrench to 5 - 8N・m. Apply conductive paste to the connection to reduce contact resistance. Then connect the control line plug to the 50-terminal interface and secure the clip. Note that the total resistance of the main circuit must be ≤1 milliohm, and the resistance of the control circuit must be ≤500 milliohms, which can be confirmed by multimeter testing. Most starters of this model use the housing as the negative pole (ground). It is strictly prohibited for the positive cable to contact the housing to avoid burning the internal coil. If the starter is equipped with a built-in start protection relay, it is recommended to cancel the vehicle's original start relay to prevent circuit conflicts.
Reconnect the negative terminal of the storage battery. First, use a multimeter to test the voltage between the 30-terminal of the starter and the housing, ensuring it is close to the 24V battery voltage. Then turn on the ignition switch and observe whether the starter drives the flywheel to operate smoothly. Each startup time should be controlled within 5 seconds, and must not exceed 15 seconds. If the startup fails, wait at least 30 seconds before retrying to avoid damage to the heavy-duty starter due to overload. Immediately release the switch after the engine starts to allow the drive gear to disengage from the flywheel ring gear.
After shutting down the machine, check that the connection between the starter and the mounting bracket is not loose, and the terminal posts are not overheating. If there is abnormal gear meshing noise, adjust the gap between the end face of the drive gear and the end face of the flywheel ring gear by adding or removing shims, keeping it at 2.5 - 5mm. Meanwhile, ensure that the starter is not activated before the engine flywheel stops rotating to prevent gear damage from impact. In addition, check the solenoid switch to ensure the iron core is firmly attached to avoid detachment failure during operation.
Given that the Daewoo 24V 7.0KW starter is adapted for heavy - duty equipment such as heavy - duty trucks and forklifts, featuring high power and large current. Meanwhile, heavy - duty operating conditions impose rigorous requirements on installation accuracy and safety. Therefore, the precautions for its installation should focus on four core aspects: high - voltage safety protection, heavy - duty - adapted fastening, line resistance control, and heavy - duty test specifications. Details are as follows:
Thorough Power Disconnection Operation
The starting current of this starter exceeds 300A. Before installation, it is necessary to disconnect both the positive and negative terminals of the 24V high - capacity storage battery (only the negative terminal needs to be disconnected for small - power starters). Wrap the terminal ends with insulating tape and keep them away from metal components. It is strictly forbidden to restore power without authorization halfway during the entire process. Power supply can only be restored in the sequence of "connecting the positive terminal first and then the negative terminal" after all bolts and lines are completely fixed, so as to prevent burns caused by short - circuit electric arcs.
Indispensable Professional Protective Equipment
It is mandatory to wear high - voltage insulating gloves (with a voltage - withstand level of ≥500V), impact - resistant goggles, and flame - retardant oil - proof work clothes. The high - voltage insulating gloves can prevent electric shock from large current, and the flame - retardant work clothes can cope with electric arc sparks that may be generated by short circuits, comprehensively reducing safety risks under heavy - duty operating conditions.
Avoid Hazardous Environments and Operations
The installation area should be far away from fuel tanks, oil circuits, and flammable materials. Ensure there is no fuel leakage or flammable gas accumulation, and the use of open flames at the installation site is strictly prohibited. If the installation environment is humid, it must be dried first to avoid short circuits caused by moisture in the high - voltage circuit. Do not touch the main power terminal and the housing simultaneously with metal tools, so as to prevent instantaneous short circuits from burning out components.
Careful Selection and Matching of Bolts and Mounting Surfaces
High - strength bolts of the same specification as the original factory (usually grade 8.8 or above) must be used as fixing bolts, and replacement with ordinary bolts is strictly prohibited. Before installation, confirm that the surface of the mounting bracket is flat and free of deformation. After cleaning the mounting surface, a small amount of anti - rust lubricant can be applied (without affecting the fit degree), so as to avoid bolt loosening or wear of the mounting surface caused by vibration under heavy - duty conditions.
References：
The precautions for installing the Daewoo 24V 7.0KW starter you inquired about are not derived from a single exclusive official document of Daewoo or any sole authoritative source. Instead, they are a summarized compilation integrating universal maintenance norms for heavy-duty starter installation, industry operational guidelines, and the characteristics of this starter model adapted for heavy-duty equipment. The information sources can be categorized into the following two types:
Many basic precautions in the content are highly consistent with the universal starter installation and maintenance specifications published on platforms such as Hexun, PCauto, and Autohome. For example:
Core requirements applicable to all starter installations: disconnecting power before installation to prevent short circuits, tightening bolts to the specified torque, and avoiding violent operation of precision components.
Test specifications such as limiting each startup time to no more than 5 seconds and requiring an interval between consecutive startups—these details align with the starter usage and maintenance guidelines shared on Autohome.
All the above universal norms serve as the foundation for ensuring the installation safety and stable operation of heavy-duty starters.
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