Common Faults of Wheel Loader Gearbox

Apr 7th,2025 29 Views

Wheel loaders play an important role in engineering operations, and their gearboxes are key components. Once a failure occurs, it will seriously affect the normal operation of the equipment. Understanding the "common faults of wheel loader gearboxes" is crucial for timely troubleshooting and repairing problems.

Gearbox oil leakage

"Wheel loader gearbox oil seal damage failure" is relatively common. Aging, deformation or improper installation of the oil seal will cause the oil in the gearbox to leak out. A careful inspection of the oil seal will reveal obvious oil stains. In addition, "wheel loader gearbox housing rupture and oil leakage" should not be ignored. Long-term impact loads may cause cracks in the gearbox housing, causing oil leakage. Once oil leakage is found, it should be repaired in time, otherwise it will cause more serious component wear due to lack of oil.

Difficult shifting

"Wheel loader gearbox shift valve failure causes difficult shifting" often occurs. If the shift valve is stuck or worn, the hydraulic oil will not be able to control the shift mechanism normally, and the gear shift will not be smooth and there will be obvious jamming when shifting. In addition, "wheel loader gearbox clutch plate wear affects shifting" is also relatively common. After long-term use, the clutch plate has uneven surface wear and reduced torque transmission capacity, resulting in untimely power interruption during gear shifting and difficulty in shifting.

Gearbox overheating

"Overheating caused by low oil level in the gearbox of a wheel loader" is a common cause. Insufficient oil level prevents effective heat dissipation and lubrication, intensifies friction among components in the gearbox, and causes rapid temperature rise. At the same time, "overheating caused by blockage of the radiator of the gearbox of a wheel loader" should not be ignored. The radiator is blocked by dust and debris, the heat dissipation effect is poor, and the heat cannot be dissipated in time, causing the gearbox oil temperature to be too high. Long-term overheating will cause the gearbox oil to deteriorate and further aggravate component wear.

Abnormal noise

"Abnormal noise caused by gear wear in the gearbox of a wheel loader" is more common. When the gear runs under high load for a long time, the tooth surface will be worn, pitted, or even broken, and a sharp noise will be emitted during operation. In addition, "noise caused by damage to the bearing of the gearbox of a wheel loader" is also not uncommon. Wear or damage to the bearing will change the concentricity of the rotating parts, resulting in abnormal buzzing or rattling. Once you hear abnormal noise from the gearbox, you need to stop the machine and check it as soon as possible to determine the root cause of the fault and repair it in time.

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