|
Type :
|
Acgenerator
|
|
Specification :
|
12V 55A
|
|
Pulley :
|
6PK
|
|
Brand :
|
NUOJIN
|
|
Number :
|
VG1560090011
|
|
Quality :
|
Renovate
|
|
Delivery time :
|
30 days
|
The installation process of the 28V generator for Howo vehicles follows the same general logic as that of standard automotive generators. The core focus is on circuit safety for the 28V high-voltage system and key details like belt tension. Below are detailed steps tailored to the installation characteristics of commercial vehicles:
Tools and Accessories: Prepare wrenches, sockets, and a special belt tensioner tool compatible with the Howo model. If there is rust on the terminals, additionally prepare sandpaper. Confirm that the new 28V generator is compatible with the corresponding Howo model by verifying parameters such as power and mounting hole positions. Check that the generator has no external damage and all accessories are complete.
Vehicle Safety Protection: Park the Howo vehicle on a flat surface, fully engage the handbrake, and turn off the engine. Use a wrench to disconnect the negative battery cable without fail. The 28V high-voltage system carries a higher short-circuit risk than the 12V system, and power disconnection prevents damage to the generator regulator and vehicle electrical modules during installation. If the generator’s mounting position is blocked by accessories like guards, remove these parts first and secure the vehicle with professional stands—never rely solely on a jack for support.
Clean the Installation Area: Use a cloth to wipe away oil stains, dust, and debris from the mounting position. Ensure the installation surface is clean to avoid loose generator installation and subsequent malfunctions.
Place the new 28V generator stably in the mounting position, align it with the fixing bolt holes on the generator body, and manually screw in the bolts for initial positioning—do not fully tighten them to reserve adjustment space for subsequent belt tensioning. Handle the generator with care during transportation and placement to prevent collisions with the housing that could damage internal precision components such as coils.
If there is rust or oxide on the generator terminals or vehicle connection points, first polish them clean with sandpaper to ensure good conductivity. Refer to the wiring marks on the old generator to locate the B+ terminal and other signal interfaces of the new generator, then connect the power cables and signal wires accordingly. Never reverse the positive and negative poles, as this may burn out electrical components. Control the force when tightening terminal nuts, ensure plugs are fully inserted and locked in place, and organize the wiring harness to avoid entanglement or contact with high-temperature components like the engine exhaust pipe.
Use a special belt tensioner tool to pry the tensioner, compress its internal spring, and maintain this state while accurately fitting the drive belt onto the generator pulley. Ensure the belt is fully aligned with the grooves of the engine-side pulley. Slowly release the tensioner to allow the belt to naturally fit into the grooves. Then check the tension—an appropriate sinkage of 1-2 centimeters when pressed is ideal. An overly loose belt may slip and cause power generation failures, while an overly tight belt will accelerate generator bearing wear.
After confirming the belt tension is normal, fully tighten the generator’s fixing bolts one by one with a socket in accordance with the torque calibration standards of the Howo model to prevent loosening due to vibration during operation. Subsequently, reinstall the previously removed guards and other accessories in the reverse order of removal, and tighten all fixing screws to avoid accessory detachment during vehicle operation.
Reconnect and tighten the negative battery cable. After starting the engine, observe whether the charging fault light on the instrument panel turns off. Use a multimeter to test the generator’s output voltage and confirm it falls within the standard range for the 28V system. Meanwhile, pay attention to any abnormal noises around the generator. If sounds such as belt slipping or metal friction occur, shut down the engine immediately to check for proper belt tension or deviations in the generator’s mounting position. The installation is only complete when all indicators are normal.
The installation of the 28V generator for Howo vehicles must take into account electrical safety, mechanical assembly standards and subsequent commissioning verification. Below are the core precautions sorted out throughout the entire installation process, which can effectively avoid equipment damage and potential safety hazards:
First, park the vehicle on a flat surface and fully engage the parking brake. Use a wrench to disconnect the negative battery cable without fail. The 28V electrical system of Howo vehicles has a higher voltage than the conventional 12V system. Live-line operations are highly likely to cause short circuits, which in turn will burn out the generator regulator and the vehicle's own electrical modules. The power must remain disconnected during the entire wiring process.
Select a 28V generator compatible with the specific Howo model, prioritizing original factory or certified genuine parts. Focus on verifying parameters such as the generator's power, mounting holes and pulley specifications. This avoids installation difficulties or even malfunctions like abnormal power generation during operation due to mismatched dimensions or performance. Meanwhile, inspect the generator for no collision damage on the exterior, no unusual internal noise, and ensure all accessories are complete and intact.
Prepare matching wrenches, sockets and a special belt tensioner tool. If the wiring terminals are rusted, additional sandpaper is required. Use the sandpaper to polish off rust and oxide layers on the terminals and vehicle connection points to ensure good electrical conductivity. Clean oil stains, dust and debris from the installation area with cleaning tools to prevent impurities from affecting installation accuracy.
After placing the generator in the installation position and aligning it with the fixing bolt holes, manually screw in the bolts for initial positioning. Do not fully tighten them immediately, as this reserves adjustment space for subsequent belt tension adjustments. Handle the generator gently when moving and placing it to avoid damaging precision components such as internal coils and rectifiers by colliding with the casing.
References：
You may be asking about the source of the content regarding the installation methods and precautions for the 28V alternator suitable for SINOTRUK HOWO vehicles. This content does not come from a single exclusive official document of HOWO. Instead, it is compiled by integrating various reference materials such as the general installation specifications for automotive alternators and the maintenance experience related to HOWO vehicles. The specific reference bases are as follows:
The general installation procedures for automotive alternators summarized by professional automotive platforms such as Autohome and PCauto serve as one of the core reference bases. Key steps, including disconnecting the negative battery cable before installation to prevent short circuits, adjusting the belt tension after initially securing the alternator, and connecting wires according to the original circuit routes, are also applicable to the 28V alternator of HOWO vehicles. In addition, the installation guidelines for automotive alternators released by mechanical and electrical enterprises like Shenzhen Xinxitian Electromechanical Co., Ltd., which cover content such as verifying the compatibility of alternator parameters and testing the output voltage after installation, have also provided support for establishing the basic installation logic.
In the communication scenarios of the auto repair industry and the practical operation experience of offline maintenance workshops, targeted detailed adaptation adjustments are made to the general installation steps based on the characteristics of commercial vehicles like HOWO. For instance, specific requirements for securing the wiring to adapt to the high - load electrical systems of commercial vehicles are refined. These practical precautions have been integrated into the relevant content. However, most of this experience is passed down orally within the industry or recorded internally by workshops, and few public exclusive documents have been formulated for it.
HOWO mainly focuses on diesel commercial vehicles. The common specifications regarding component fixing torque and insulation inspection of electrical connections, as included in the content related to diesel generator installation released on platforms such as
11467.com, have also provided references for the precautions for installing the 28V alternator of HOWO. These specifications are particularly consistent with the requirements for the installation firmness of commercial vehicle alternators under vibrating operating conditions.
Related Articles
Discover what vehicles use auto starter systems and how Auto Starter car technology improves safety, convenience, and performance. Learn about manufacturer production, factory supply, and modern applications for cars, trucks, and commercial vehicles.....
Looking for a complete Auto Starter guide? This article explains how auto starters work, types, symptoms, maintenance tips, and how manufacturers and factories supply high-quality starters for global production and bulk orders.....
Learn everything about starter parts, how they work, signs of failure, maintenance tips, and how a professional manufacturer with factory production ensures stable, high-quality starter components for global vehicle owners.....
Explore the real-world Auto Starter disadvantages in industrial and automotive production. Learn how auto starter systems affect reliability, cost, maintenance, and factory manufacturing efficiency.....
Discover what a starter solenoid does in a vehicle, how it works with the starter motor, signs of failure, and why quality starter solenoid production from a professional manufacturer and factory matters for reliable performance.....
Explore common Boat Starter types and learn which marine engines they fit best. As a professional Boat Starter manufacturer with factory production and bulk supply capability, we provide reliable starting solutions for outboard, inboard, and diesel marine engin....
