600-821-9542 AC Generator

600-821-9542 is a 24V 75A AC generator accessory suitable for construction machinery such as Komatsu excavators and graders. It is driven by the engine belt to rotate the pulley, converting the mechanical energy output by the engine into DC electricity. On the one hand, it charges the battery of the whole vehicle, maintains the battery power, and on the other hand, it continuously provides stable power supply for various electrical equipment such as instrument panels, controllers, sensors, lights, etc., ensuring the normal operation of the engine electronic control system and monitoring system. It is the core of the power supply for the entire construction machinery. Once it fails during equipment operation, problems such as battery depletion, abnormal operation of electrical components, and even inability to start the equipment may occur.

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Part Name	AC Generator
Part Number	600-821-9542
Weight	12.5kg
Material	Aluminum alloy shell, copper coil, silicon steel core, steel pulley, insulated plastic component
Compatible model	Komatsu PC400-7 excavator, engine model SA6D125E -3

Main Features
24V/75A output specification, stable power supply output, can meet the high-power electricity demand of the whole machine.
Aluminum alloy casting shell, excellent heat dissipation performance, anti vibration, suitable for harsh working conditions of construction machinery.
The double groove pulley structure ensures reliable transmission and reduces slippage, resulting in high transmission efficiency.
Built in rectification and voltage regulation module, which can automatically stabilize voltage and protect the battery and all electrical components of the vehicle.
Strictly benchmark the original factory assembly dimensions, ensure consistent installation hole positions, and replace directly without modification.
Applicable scenarios: Komatsu PC400-7 mine, earthwork excavation construction site; Maintenance and replacement of SA6D125E – 3 engine equipment; Accessories for construction machinery repair shops and equipment manufacturers, used for supplying power to the entire vehicle and charging batteries.

Our address

No. 0753, 7th Floor, Ruima Mingmen Business Building, Liying Street, Rencheng District, Jining City, Shandong Province

Phone Number

19819057311

E-mail

19819057311@163.com

FAQ

Q1: What equipment is the 600-821-9542 AC generator compatible with?
A: Mainly suitable for Komatsu PC400-7 excavator, matched with SA6D125E -3 engine. Do not mix other models. Check the part number and engine model before installation.

Q2: What is the output voltage and current of this generator?
A: Rated 24V, output current 75A, designed specifically for 24V electrical systems in construction machinery, not suitable for 12V equipment.

Q3: What is the reason for the battery still running low after the installation of the new generator?
A: ① Check the tension of the belt, as slipping of the double groove pulley can cause insufficient power generation; ② Check if the harness connectors are oxidized or loose; ③ Check the aging and damage of the battery itself; ④ Check the contact condition of the grounding line.

Q4: Do I need to modify the bracket or hole position for installation?
A: No need, the product is produced according to the original factory size, with identical hole positions, and can be directly replaced with old parts without polishing or modifying the bracket.

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600-821-9542 AC Generator

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