What Causes the Rear Half-Shaft Noise in Pajero?
2 Answers
The structure of the Pajero's half-shaft indicates that the main source of the noise is the CV joint (constant velocity joint). Reasons related to the CV joint: The universal joints inside the CV joint are connected to the reducer gear and the inner ring of the hub bearing via splines on the universal joint. The machining is relatively precise, and if the gap becomes too large, it can cause noise. In severe cases, the spline teeth may even deform. There are two main solutions: 1. Apply grease inside the half-shaft CV joint, which can temporarily resolve the noise issue. 2. Replace the faulty CV joint. For some models, the CV joint cannot be replaced separately, requiring the entire half-shaft to be replaced. Special cases: In some special cases, such as the half-shaft noise in the Sportage, it can be considered a common issue. The manufacturer later provided a solution involving the installation of special spacers on the half-shaft, which also resolves the problem. Therefore, during repairs, it's necessary to consider the actual situation and handle special cases accordingly.
If there is abnormal noise from the rear half-shaft of the Pajero, it could be caused by several faults. The most common issue is wear or damage to the rear wheel bearings, which produces a continuous friction sound while driving, especially noticeable at high speeds. Another possible cause is a problem with the half-shaft universal joint, such as a clicking noise during turns, often due to insufficient lubrication or excessive wear inside the joint. Additionally, abnormal differential gear issues can also transmit noise to the rear half-shaft through the drivetrain. Regular inspection and maintenance of the bearings are crucial—for example, checking them every 50,000 kilometers and ensuring sufficient grease lubrication. Ignoring the noise can turn a minor issue into a major repair, potentially damaging other components and costing more time and money. I recommend immediately visiting a professional repair shop to diagnose the source of the noise using a stethoscope—don’t wait until the sound worsens. This vehicle has strong off-road capabilities, but the half-shaft system must remain in good condition for worry-free adventures.
