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The LG9716220005+176/1 Auxiliary Box Shift Fork (JS85T-1707067) is a precision-engineered shifting component designed for the auxiliary transmission section of SINOTRUK Howo heavy-duty trucks. As a trusted supplier of genuine Sinotruk howo parts, we offer this OEM-grade shift fork as a direct replacement for the original factory unit. The LG9716220005+176/1 fork actuates the range-shifting synchronizer in the auxiliary box, enabling smooth, reliable high/low range changes across all operating conditions. Manufactured from high-strength forged alloy steel with induction-hardened fork faces and a precision-machined pivot bore, this component withstands extreme shifting forces, thermal cycling, and vibration, delivering long service life and preventing costly transmission failures.
The LG9716220005+176/1 shift fork is essential for maintaining crisp, accurate gear engagement in your HOWO truck’s transmission. Worn or damaged forks cause difficult shifting, gear slippage, and eventual auxiliary box failure. This genuine OEM fork restores precise shift control and ensures reliable operation.
OEM direct replacement • Forged alloy steel • Hardened fork faces • Precision pivot pin • Smooth, durable shifting
The LG9716220005+176/1 shift fork (also identified as JS85T-1707067) is a critical internal component of the auxiliary (range) section in SINOTRUK Howo transmissions, commonly used in A7 and T7H trucks. It moves the synchronizer sleeve or sliding gear to engage high or low range, enabling the driver to select the appropriate gear ratio for varying loads and terrain. Its OEM-grade construction matches the original fork’s dimensions, fork pad contour, and pivot pin location, ensuring perfect fit and precise shift feel.
The fork is forged from high-strength alloy steel (42CrMo or equivalent) and CNC-machined to exacting tolerances. The fork faces are induction-hardened to resist wear from repeated sliding contact with the synchronizer sleeve, while the pivot bore is honed to a smooth finish for low-friction articulation. A hardened steel pivot pin provides reliable, long-lasting movement. The fork also receives a black oxide or phosphate coating to resist corrosion and transmission fluid attack.
The LG9716220005+176/1 is designed with a specific arm offset and length to interface correctly with the shift rail and actuator. Its robust construction and precise geometry contribute to consistent, reliable range shifting over the transmission’s service life. Typical signs of a worn shift fork include difficulty engaging gears, grinding noises during range changes, and the transmission popping out of gear. Replacing a worn fork with this genuine part restores smooth, precise shifting and prevents further damage.
Whether you’re rebuilding a transmission or repairing a shifting issue, the LG9716220005+176/1 Auxiliary Box Shift Fork delivers the quality, strength, and precision that SINOTRUK Howo professionals rely on.
The LG9716220005+176/1 shift fork is exclusively designed for SINOTRUK Howo A7, T7H, and other heavy-duty models equipped with the JS85T series manual transmissions. It functions in the auxiliary (range) box, controlling the high/low range engagement. This fork is a direct replacement for the original factory part and is compatible with all revisions of the JS85T gearbox that use the same shift rail and synchronizer assembly.
This component is essential in applications involving frequent range changes, such as long-haul transport, construction, mining, and heavy hauling. In these severe-duty environments, the shift fork experiences high mechanical loads, rapid temperature swings, and contamination from gear oil. The LG9716220005+176/1 is engineered to endure these challenges, delivering consistent, reliable range shifting over extended service intervals.
When replacing a shift fork, always inspect the synchronizer sleeve, sliding gear, and shift rail for wear – these components often degrade together. The LG9716220005+176/1 is designed to work with factory-spec mating parts to ensure proper clearance and shift quality. For optimal results, replace the fork together with worn synchronizer components.
For fleets operating multiple HOWO trucks with JS85T transmissions, this fork standardizes auxiliary box repairs, simplifying inventory and ensuring the correct part is on hand for maintenance. Always verify your transmission model, though the LG9716220005+176/1 is the standard auxiliary shift fork for the majority of JS85T applications in A7 and T7H chassis.
Replacing the LG9716220005+176/1 shift fork is a complex operation requiring advanced mechanical skills, special tools, and a clean workbench. It should only be performed by qualified transmission specialists. Begin by removing the transmission from the vehicle and draining the fluid, then disassemble the auxiliary box following the manufacturer’s service manual.
Carefully extract the shift rail, synchronizer assembly, and old fork. Inspect the fork faces, pivot bore, and arm for wear patterns. If the fork shows excessive wear or damage, replace it with the new unit. Clean all internal components thoroughly and inspect the sleeve and sliding gear – replace any worn mating parts to ensure optimal shift quality.
Lubricate the new fork’s pivot bore and fork faces with clean transmission fluid before installation. Install the LG9716220005+176/1 onto the shift rail, ensuring correct orientation and alignment with the synchronizer sleeve. Secure the pivot pin and retaining clips as per specifications, then reassemble the auxiliary box and the rest of the transmission.
Torque all fasteners to factory values and refill with the recommended transmission oil. After installation, test the shift mechanism manually to verify smooth engagement. For maintenance, change transmission oil at recommended intervals (50,000-100,000 km) to protect the fork and other internal parts. If shifting becomes difficult, inspect the fork promptly.
The LG9716220005+176/1 shift fork is produced in an ISO 9001-certified facility using advanced forging, CNC machining, and heat-treatment processes. The alloy steel is sourced from certified mills and undergoes chemical analysis to confirm its composition. Each forging is inspected for grain flow and structural integrity before machining.
Every fork undergoes dimensional verification via coordinate measurement, Rockwell hardness testing on the fork faces, and surface finish inspection. The pivot bore is checked for roundness and clearance. Random samples are subjected to fatigue testing, shifting cycle simulation, and wear resistance tests to validate long-term durability under real-world conditions.
We back the LG9716220005+176/1 with a comprehensive warranty against material and workmanship defects. Our stringent quality control ensures every fork delivers the same fit, performance, and durability as the original factory part, giving you full confidence in your transmission’s shifting reliability.
Choose genuine quality for your transmission repair – choose the LG9716220005+176/1 Auxiliary Box Shift Fork.
The LG9716220005+176/1 shift fork is a vital component that directly determines the shift quality, reliability, and longevity of your HOWO truck’s transmission. A worn or broken fork can cause difficult range changes, gear grinding, and ultimately, auxiliary box failure, leading to expensive towing, rebuilds, and extended downtime. By replacing a worn fork with this genuine OEM part, you restore positive, precise range engagement and protect the entire transmission.
The LG9716220005+176/1 is forged from premium alloy steel, induction-hardened on the fork faces, and finished with a corrosion-resistant coating. Its OEM-spec geometry guarantees perfect fit within the JS85T auxiliary box, ensuring smooth, reliable movement along the shift rail and precise engagement with the synchronizer sleeve. This translates to effortless shifting, reduced driver fatigue, and extended transmission life.
Fleet operators will enjoy reduced transmission maintenance, fewer unscheduled breakdowns, and lower overall repair costs. Owner-operators will have peace of mind knowing their truck’s transmission is protected by a component that meets OEM specifications and is backed by a comprehensive warranty.
Invest in the LG9716220005+176/1 Auxiliary Box Shift Fork and ensure your SINOTRUK Howo delivers the shifting performance and reliability you expect. Its superior materials, precision engineering, and proven durability make it the smart choice for professionals who demand the best.
Order your LG9716220005+176/1 today and keep your HOWO truck shifting smoothly, precisely, and reliably for miles to come.
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