

The Range-gear auxiliary is a precision-engineered assembly designed for the HOWO Max 4X2 AMT transmission, enabling smooth and reliable range shifting for optimal performance in both low and high-speed operations. This comprehensive kit includes the Range gear auxiliary box assembly (AMT), Hexagon head bolt, Idler shaft pressing block, Hoisting plate, Lock plate, and Needle roller P5×13.8 GB309. As genuine howo Parts, the Range-gear auxiliary meets the highest OEM standards, delivering the durability and precision that professional drivers demand. Every component in this Range-gear auxiliary is manufactured to exact tolerances, ensuring seamless integration with the AMT system for quiet, efficient, and reliable gear changes.
The Range-gear auxiliary kit integrates the main housing, fastening bolts, pressing blocks, lifting points, locking plates, and precision needle rollers. These components work together to provide a robust and maintenance-friendly range shift mechanism, reducing wear on synchronizers and extending transmission life. This Range-gear auxiliary is an essential upgrade or replacement for any AMT-equipped HOWO Max 4X2, ensuring consistent range engagement and improved drivability.
With the Range-gear auxiliary, you can restore the shifting performance of your vehicle, reducing driver fatigue and enhancing fuel efficiency. Trust in HOWO’s engineering and the quality of this Range-gear auxiliary to keep your truck operating at its peak.
The Range gear auxiliary box assembly is the main housing that contains the range shift mechanism for the AMT transmission. This precision-cast aluminum housing provides a rigid mounting for the shift rails, forks, and synchronizers, ensuring accurate and repeatable range changes. Its lightweight construction reduces overall transmission weight, contributing to improved fuel economy. The Range gear auxiliary box is designed for direct replacement, featuring all necessary mounting points and oil passages to maintain proper lubrication. This Range-gear auxiliary component is critical for reliable range shifting and is built to withstand the high forces and temperatures encountered during heavy-duty operation.
Manufactured from high-strength aluminum alloy with a corrosion-resistant finish, the Range gear auxiliary box assembly offers excellent durability and thermal management. Its machined bores and sealing surfaces ensure a perfect fit for the shift components, reducing wear and ensuring quiet operation. This Range-gear auxiliary component is a direct replacement for the original equipment, guaranteeing a perfect fit and reliable performance.
Replacing a worn or damaged auxiliary box with this genuine Range-gear auxiliary component restores the shifting precision of the AMT, eliminating play and ensuring smooth, consistent range changes.
The Hexagon head bolt is a high-strength fastener used to secure the auxiliary box to the transmission case and to attach various brackets and covers. This bolt is manufactured from high-grade steel with a corrosion-resistant coating, providing excellent tensile strength and durability. Its standard hex head allows for easy tightening with common tools, ensuring a secure and reliable connection in the Range-gear auxiliary assembly.
The Hexagon head bolt is designed to withstand the high clamping forces and vibration encountered in the drivetrain, ensuring that the Range-gear auxiliary remains securely attached. Replacing a worn or stripped bolt with this genuine component guarantees proper torque retention and prevents oil leaks from the auxiliary box joint.
This Hexagon head bolt is an essential part of the Range-gear auxiliary kit, providing the fastening needed to maintain the integrity of the range shift mechanism.
The Idler shaft pressing block is a precision-machined steel component that applies pressure to the idler shaft, ensuring correct alignment and preventing axial movement. This block is critical for maintaining the proper mesh of the idler gears within the Range-gear auxiliary, reducing noise and wear. Its hardened surface provides long-term durability, and its precise dimensions guarantee a perfect fit in the housing.
Manufactured from high-quality steel with a ground finish, the Idler shaft pressing block offers excellent wear resistance and dimensional stability. Its design ensures that the idler shaft is held firmly in place, preventing rattling and ensuring smooth gear engagement in the Range-gear auxiliary. Replacing a worn or damaged block with this genuine component restores the rigidity of the idler shaft support, extending the life of the range shift mechanism.
The Idler shaft pressing block is an essential part of the Range-gear auxiliary, ensuring that the idler gear train remains stable and quiet during operation.
The Hoisting plate is a sturdy steel bracket that provides a secure lifting point for the Range-gear auxiliary assembly during installation or removal. This plate is designed to distribute the weight of the auxiliary box evenly, allowing for safe and efficient handling with a hoist or engine crane. Its robust construction ensures that it can support the full weight of the assembly without deformation.
Manufactured from high-strength steel with a corrosion-resistant finish, the Hoisting plate features precisely located bolt holes that match the mounting points on the auxiliary box. This ensures a secure attachment and prevents the plate from shifting during lifting operations. The Hoisting plate is an essential tool for any workshop performing service on the Range-gear auxiliary, making the job safer and more efficient.
This Hoisting plate is included as a genuine part of the Range-gear auxiliary kit, ensuring that the correct lifting hardware is available for safe maintenance procedures.
The Lock plate is a safety device that prevents the shift rail from moving out of position due to vibration or accidental contact. This plate is designed to engage with the shift rail and housing, providing a positive mechanical lock that ensures the Range-gear auxiliary remains in the selected range. Its robust construction and precise fit guarantee reliable locking action, reducing the risk of unintentional range changes.
Manufactured from hardened steel with a corrosion-resistant coating, the Lock plate offers excellent durability and wear resistance. Its design allows for easy installation and removal, facilitating maintenance of the Range-gear auxiliary. Replacing a worn or damaged lock plate with this genuine component restores the safety and reliability of the range shift mechanism.
The Lock plate is an essential part of the Range-gear auxiliary, ensuring that the selected range is maintained under all operating conditions.
The Needle roller P5×13.8 is a precision cylindrical roller bearing element used in the Range-gear auxiliary to reduce friction and support rotating components. This needle roller features a diameter of 5mm and a length of 13.8mm, conforming to GB309 standards for high-quality rolling bearings. Its small diameter and high load-carrying capacity make it ideal for applications where space is limited, such as inside the auxiliary box.
Manufactured from high-carbon chromium bearing steel with a precision-ground surface, the Needle roller P5×13.8 offers exceptional hardness and wear resistance. Its precise dimensions ensure a perfect fit with the mating components, reducing friction and extending the life of the Range-gear auxiliary. Replacing a worn or scored needle roller with this genuine component restores the rotational accuracy and efficiency of the range shift mechanism.
This Needle roller P5×13.8 is an essential part of the Range-gear auxiliary, providing low-friction support for shafts and gears within the assembly.
| Material Encoding | Name |
|---|---|
| AZ2203101114 | Range gear auxiliary box assembly (AMT) |
| Q150B1025 | Hexagon head bolt |
| WG2229100059 | Idler shaft pressing block |
| WG2229100061 | Hoisting plate |
| WG2229100074 | Lock plate |
| WG9003345138 | Needle roller P5×13.8 GB309 |
The Range-gear auxiliary includes the main housing, fasteners, pressing blocks, lifting plate, lock plate, and needle rollers – everything needed for a full overhaul of the range shift mechanism. This comprehensive kit eliminates the need to source individual parts, ensuring compatibility and saving valuable workshop time.
Every component of the Range-gear auxiliary is manufactured to the exact specifications of the original equipment, using high-quality materials and advanced heat treatment. This ensures exceptional wear resistance, quiet operation, and long-term reliability under the most demanding heavy-duty conditions.
All components of the Range-gear auxiliary are precision-machined to tight tolerances, guaranteeing a perfect fit with the AMT transmission. The included hoisting plate and lock plate facilitate safe handling and secure locking, simplifying the installation process and reducing the risk of errors.
As genuine howo Parts, the Range-gear auxiliary is designed and tested by the same engineers who built your AMT transmission. You receive the assurance of quality, compatibility, and performance that only OEM components can provide, backed by HOWO’s global service network.
The Range-gear auxiliary is a vital component for the AMT transmission of your HOWO Max 4X2, enabling smooth and reliable range changes that optimize engine performance and fuel efficiency. A worn or damaged auxiliary box can lead to difficult shifting, gear clash, and even transmission failure. Rebuilding with this complete Range-gear auxiliary kit restores the shift precision of your vehicle, ensuring consistent and predictable range engagement.
The Range gear auxiliary box assembly provides a robust housing, while the Hexagon head bolts ensure secure fastening. The Idler shaft pressing blocks maintain correct shaft alignment, and the Hoisting plate simplifies installation. The Lock plate prevents unintended range shifts, and the Needle rollers reduce friction and wear. Together, they form a reliable, high-performance Range-gear auxiliary.
Installation of the Range-gear auxiliary should be performed by a qualified technician with experience in AMT transmissions. The hoisting plate provides a safe lifting point, and the lock plate must be correctly engaged to ensure proper shift rail retention. This kit is designed to make the rebuild process straightforward, with all components clearly matched to the original equipment.
Regular inspection of the Range-gear auxiliary is recommended as part of your vehicle’s preventive maintenance. Listen for unusual grinding or rattling during range shifts, and check for oil leaks around the auxiliary box. If you detect any issues, replacing the worn parts with this genuine Range-gear auxiliary kit will restore the reliability of your AMT transmission and prevent more extensive damage to internal components.
For fleet operators, standardizing on the Range-gear auxiliary simplifies parts inventory and ensures consistent range-shift performance across all vehicles. The robust construction of these genuine components minimizes the frequency of major repairs, lowering total cost of ownership and increasing vehicle uptime.
Owner-operators will appreciate the peace of mind that comes from using genuine HOWO parts. Knowing that your Range-gear auxiliary is built to OEM standards allows you to focus on the road, confident that your transmission is protected.
The Range-gear auxiliary is also compatible with the latest diagnostic tools, allowing for easy verification of shift rail position and lock plate engagement during routine checks. This compatibility simplifies troubleshooting and ensures that your AMT transmission remains in optimal condition.
In summary, the Range-gear auxiliary is the definitive solution for rebuilding the range shift mechanism of your HOWO Max 4X2’s AMT transmission. Its comprehensive design, OEM-quality construction, and ease of installation make it the smart choice for any professional driver or fleet manager.
Choose the Range-gear auxiliary for your next transmission service and experience the difference that genuine howo Parts make. This investment in reliability will pay dividends in transmission longevity, shift quality, and reduced downtime.
Order the Range-gear auxiliary today and ensure that your HOWO Max 4X2 continues to deliver the dependable shifting performance that you expect. With this complete kit, you can restore your AMT range shift system to factory-new condition and drive with confidence.
Don’t compromise on shift reliability – upgrade with the genuine Range-gear auxiliary and keep your HOWO Max 4X2 operating at its best.
The Range-gear auxiliary – engineered for HOWO Max 4X2, delivering precise and reliable range shifting for AMT transmissions.