What is the reason for the noise when the Chengong 50 loader is reversing?
2 Answers
Noise is caused by the lack of a synchronizer in the reverse gear of the driven vehicle. Synchronizer: It is a device inside the gearbox that ensures smooth meshing of gears when shifting gears. Some vehicles do not have synchronizers, making it difficult to shift gears. Additionally, to distinguish it from forward gears, most vehicle gearboxes do not have synchronizers for the reverse gear, which is why noise occurs when engaging reverse gear. Gearbox: It is a device that changes the speed ratio and direction of motion. Used in automobiles, tractors, ships, machine tools, and various machines to alter the torque, speed, and direction of motion transmitted from the driving shaft to the driven shaft under different working conditions. Gear-driven gearboxes generally consist of a housing and several gear pairs.
My Chengong 50 loader has been making a clanking noise from the chassis when reversing recently. After several careful inspections, I found that the universal joint on the driveshaft was loose. This loader has been working in a quarry for seven or eight years, and the large swing amplitude of the driveshaft makes it prone to wear. Last week, I took it apart and found that the needle roller bearing had indeed fallen apart, and the grease had been thrown out completely. When reversing, the torque changes significantly, exposing the wear gap in the universal joint. I suggest you first shake the driveshaft to listen for any gap noise and check if the rear axle gear oil is sufficient. If it’s been low on oil for a long time, the reduction gears will also make a rattling noise. Loose steering ball joints can also produce a thudding sound when reversing and turning. For this, have an apprentice sit in the cab and engage reverse gear while you listen underneath the vehicle to pinpoint the exact location.
