Let me tell you about common faults and troubleshooting methods related to the drive axle of a loader, so that you can better understand loaders. The drive axle of a loader has a large output torque and a complex structure, making it prone to faults. Here are the causes, phenomena, and solutions for common faults.
1. Abnormal Noise. The causes of noise in the drive axle are complex. Substandard parts, improper main drive assembly adjustment, and excessive wear can all cause noise during operation.
(1) Noise caused by improper gear meshing clearance. If the meshing clearance is too large, the teeth collide, producing an arrhythmic "clunking" sound; if the meshing clearance is too small, the teeth squeeze against each other, producing a continuous "coughing" sound, accompanied by heat; when the meshing clearance is uneven, the sound is a rhythmic "hard" sound, and in severe cases, the drive axle may wobble. The solution is to remove the main drive mechanism and readjust the gear meshing clearance.
(2) Noise caused by improper bearing clearance. If the bearing clearance is too small, the noise will be a continuous "ying..." sound; if the bearing clearance is too large, it will produce a chaotic "ha la, ha la" sound. The solution is to remove the main drive mechanism and readjust the bearing clearance.
(3) Differential noise: If the planetary gears and cross shaft are stuck, a "ga pa, ga pa" sound will be produced, which often occurs when turning; the noise from poor meshing of the planetary gears is more complex. When the machine is traveling straight, it will make an "en..." sound, and the higher the machine speed, the louder the sound will be. When turning, a "clunk, clunk" sound will also occur. The solution is to remove the main drive mechanism and replace the cross shaft or planetary gears.
2. Overheating. If the axle housing feels very hot to the touch after the forklift has been running or operating for a period of time, it indicates that the drive axle is overheating. The main causes are insufficient bearing clearance and gear meshing clearance, as well as insufficient lubrication. The solution is to first check if there is insufficient lubrication. If there is no shortage of lubrication, the main drive should be removed to check and adjust the bearing clearance or gear meshing clearance. 3. Oil Leakage. Oil leakage occurs when the forklift is in operation or parked, with gear oil seeping from the joint between the main drive and the axle housing, as well as inside the wheel-side reducer. Leakage at the joint between the main drive and the axle housing is caused by loose bolts or a damaged asbestos gasket. Leakage inside the wheel-side reducer is mainly due to a damaged double-lip oil seal or O-ring. The solution is to replace the double-lip oil seal or the asbestos gasket.
