What causes the rear axle noise in Pajero V73?

[LaLeilani]

Pajero V73 rear axle noise causes are detailed as follows: Improper tooth side clearance: Noise from improper tooth side clearance. When the preload of the main reducer bearings is normal, a metal impact sound occurs at the rear axle shortly after starting the car or during gear shifting. As the speed stabilizes, the impact sound turns into continuous noise. When the throttle changes abruptly, an irregular noise appears at the rear axle, which is generally caused by excessive tooth side clearance. Bearing wear: While driving, if the noise increases with higher speed and decreases or disappears when coasting, it is usually due to bearing wear or abnormal gear clearance. If the noise occurs when abruptly changing speed or going uphill, it indicates excessive gear meshing clearance.

[SanJune]

I used to drive a Pajero V73, and the rear axle suddenly started making a clunking noise, especially noticeable when turning or on bumpy roads. The main possible causes are aging bearings in the rear differential or severe gear wear. Long-term off-road vibrations, combined with sand and mud intrusion, and insufficient lubrication led to increased friction. My car is 10 years old, and the oil seal leaked, causing the differential oil to dry up, resulting in constant noise from the rear axle. I quickly checked the oil level and cleanliness, and after replacing the oil, the issue was resolved. If left untreated, the half-shaft could be damaged, leading to expensive repairs. In daily driving, avoid hitting bumps aggressively and regularly check the oil seal to prevent leaks, which can extend the lifespan and improve safety. It's recommended to inspect the rear axle every six months—don’t wait until the noise gets louder before taking action.

[AmaraMarie]

Over the years of repairing cars, I've encountered many cases of rear axle noise in Pajero V73 models. Typical causes include dirty or insufficient differential oil, loose bearings, or gear meshing misalignment. If you hear a humming sound during uphill climbs or acceleration, it's likely a bearing failure. A clicking or clunking noise may indicate gear wear. First, drive the vehicle smoothly to observe sound variations - avoid forcing it to prevent seizure. How to check oil level? Open the small bolt at the bottom of the rear axle and extract some oil to check its color. If it appears black with metal particles, replace the oil immediately. In severe cases, the rear axle needs disassembly to inspect bearings or replace gear components - seek professional repair shops as DIY attempts without proper tools may cause damage. Remember to regularly maintain oil seals to prevent dust from entering the oil circuit.

[JuliaLynn]

Ah, it's really disappointing when the rear axle of the Pajero V73 makes noise during off-roading. I suspect it's due to insufficient or contaminated differential oil, with gravel and dust mixing into the oil causing the abnormal sound. Quickly adding new lubricant seems to help. But if neglected for long, the bearings or pinion gears could wear out, making the noise even worse. Don't slack on maintenance—check the oil level every few thousand kilometers and inspect if the suspension bolts are loose. Safety first; if the car sounds too strange, stop and address the issue promptly.