What Causes the Half Shaft Oil Seal of the Prado to Leak?
1 Answers
The reason for the half shaft oil seal leakage in the Prado is excessive oil filling in the drive axle reducer, causing the oil level to exceed the normal height. Specific causes of half shaft oil seal leakage: Deterioration and aging of the oil seal leading to reduced sealing effectiveness. Improper installation of the oil seal, resulting in gaps. Blockage of the drive axle reducer vent hole; during driving, the oil temperature rises, pressure increases, and oil is forced out, damaging the oil seal. Poor quality or incorrect dimensions of the half shaft oil seal, or loose installation between the oil seal and the half shaft sleeve. Loose wheel hub bearings or drive axle reducer bearings causing the half shaft to shake up and down. Wear of the half shaft journal leading to poor sealing. Hazards of half shaft oil seal leakage: Oil leakage from the half shaft oil seal reduces the amount of lubricating oil in the drive axle, affecting normal lubrication and accelerating wear of components, leading to premature failure. Oil leakage from the half shaft oil seal allows lubricating oil to flow into the wheel-side reducer, raising the oil level in the wheel-side reducer, which can damage the oil seal and flow into the brake drum, resulting in poor braking performance and posing a safety risk.
