First, HW12 file, 10 file platform series Technical features: 1. The main box has two intermediate shaft structures, large center distance design and sub-box planetary mechanism, which makes the bearing capacity larger and the service life longer. 2, using a forced lubrication mechanism to enhance the life of gears and bearings 3. The shell is a barrel structure with high strength and high reliability. 4, the main and auxiliary box shifting interlocking mechanism, the synchronizer has a high life 5, the main box often meshes with the gear to take the force, no need to load, shift when taking force 6, can be installed with a hydraulic retarder, driving safer Maintenance: 1. Tractor : 3 years/unlimited mileage; open cover for two years: the main box has quality failure, directly replace the whole box; 2. Dump truck : 18 months / 90,000 kilometers; a. Except for self-unloading for mining within six months, all vehicles shall implement the non-opening service policy; b. Use the same fault twice or more within one year to replace the gearbox immediately; c. Replace the gearbox immediately after using the gearbox for more than 70% damage for one year; d. For vehicles that are unable to drive due to gearbox failure for more than 24 hours, resulting in customer miswork, give a value of 1,000 yuan per one day delay Applicable to: traction series, heavy duty self-unloading series. Second, the small 10 file platform series Technical features: 1. The intermediate structure of the main box and the auxiliary box has large carrying capacity and long service life. 2, tubular structure shell, high strength, high reliability 3. Large speed ratio range, strong power and high efficiency 4, the main box often meshes with the gear to take the force, no need to load, shift when taking force Maintenance: 1, truck: 3 years / unlimited mileage 2. Dump truck: 18 months / 90,000 kilometers a. Except for self-unloading for mining within six months, all vehicles shall implement the non-opening service policy; b. Use the same fault twice or more within one year to replace the gearbox immediately; c. Replace the gearbox immediately after using the gearbox for more than 70% damage for one year; Applicable to: self-unloading series, cargo series, special vehicle series MRV-03P Series Pressure Valves Mrv-03P Series Pressure Valves,Stacking Type Check Valve,Stack Material Check Valve,Modular Stack Valves Shanghai Jinhai Hydraulic Co.,Ltd , https://www.shanghaijinhai.com
HW12 file platform series parameter table 
HW10 file platform series parameter list 
Double intermediate shaft structure advantage main box 
The perfect combination of the planetary structure sub-box 
Small 10-speed platform parameter table
The quality of the gearbox directly affects the reliability and economy of the vehicle. Next we will look at the HW gearboxes that match the Dongfeng Xinjiang models.