I. Vibration Bearings (Most Vulnerable) Overloading will subject them to excessive loads, shortening their lifespan by 30%–50%.
Inspection Method: Use a manual stethoscope or electronic stethoscope to check for "humming" or "clicking" noises during operation. Replace immediately if any looseness or noise is found.
II. Steel Wheel Welds (Core of Structural Safety) Long-term overloading can lead to metal fatigue, causing microscopic cracks in the welds, which may result in sudden fracture.
Key Inspection Points: The connection between the roller and the hub, and the area of the reinforcing ribs. Cracks can be checked visually or with an ultrasonic flaw detector.
III. Hydraulic System (Power Guarantee) Under high temperature and pressure, hydraulic oil is prone to oxidation, and seals age, increasing the risk of leakage.
Inspection Items: Check if the hydraulic oil has darkened in color, has a burnt smell, or contains metal shavings; check for oil leaks at pipe joints; check if the pressure is stable.
IV. Engine and Cooling System Check if the engine oil has turned black or emulsified, if the coolant is sufficient, and if the radiator is blocked.
Ensure the water temperature returns to normal (<85°C) to avoid thermal shock damage to the turbocharger.
V. Shock Absorption and Buffer Devices: Check for cracks in the rubber shock absorbers or weak compression and rebound; check for oil leaks in the hydraulic buffer cylinder and ensure it functions properly to effectively absorb impact reaction forces.
