Common Faults and Solutions for Wheel Loader Drive Axles

The drive axle is an important component of a wheel loader, bearing vertical, longitudinal, and lateral forces, as well as braking torque and reaction forces, which act between the road surface and the frame or body. The drive axle generally consists of the main reducer, differential, wheel drive device, and drive axle housing. Due to improper operation or maintenance of the loader, the drive axle is prone to failures. Common Faults and Solutions for Wheel Loader Drive Axles 1. Abnormal noise There are many reasons for abnormal noise in the drive axle, which may be gear problems, bearing problems, or differential failures. The various causes are analyzed in detail below. Possible cause 1: Improper meshing clearance of the main drive gear. If the meshing clearance is too large or too small, it will cause abnormal noise. Solution: Remove the main drive mechanism and readjust the gear meshing clearance. Possible cause 2: Improper bearing clearance. When the bearing clearance is too small or too large, it will produce chaotic noise. Solution: Remove the main drive mechanism and readjust the bearing clearance. Possible cause 3: Differential abnormality. If the planetary gear and cross shaft are stuck, abnormal noise will be produced, usually occurring during rotation; when the planetary gears mesh poorly, the sound is more complex, and the higher the machine speed, the greater the noise. Solution: Remove the main drive mechanism and replace the cross shaft or planetary gears. 2. Drive axle overheating After the machine has been running or has run for a period of time, if the axle housing feels very hot to the touch, it indicates that the drive axle is overheating. The main causes are too small bearing clearance and gear meshing clearance, or lack of lubricating oil. Solution: First check whether there is a lack of lubricating oil. If there is no oil shortage, remove the main drive and check and adjust the bearing clearance or gear meshing clearance. 3. Oil leakage When the machine is running or stopped, gear oil seeps out from the connection between the main drive and the axle housing and from inside the hub reducer, which means oil leakage has occurred. Oil leakage at the connection between the main drive and the axle housing is caused by loose bolts or damage to the asbestos paper gasket; oil leakage inside the hub reducer is mainly caused by damage to the double-lip skeleton oil seal or the "O" ring. Solution: Replace the double-lip skeleton oil seal or asbestos paper gasket.