Summer is just around the corner, and the temperature is steadily climbing. This poses a significant challenge for vehicles. So, when it comes to using truck-mounted cranes in hot weather, what specific issues demand our attention?
1、Excessive Mixture Gas: It’s essential to be vigilant about the issue of excessive mixture gas. With the increase in temperature, both diesel and gasoline become more fluid and prone to flow. Simultaneously, the orifice expands, leading to an increased flow of oil. Additionally, the oil itself is more likely to evaporate, resulting in an overly concentrated mixture gas. Solution: It is advisable to appropriately adjust the size of the orifice. Tweak the connection position between the acceleration device and the throttle rocker arm. Moreover, it’s necessary to reduce the height of the oil surface in the float chamber moderately to curtail the fuel supply. By making these precise adjustments, the mixture gas can be better regulated, ensuring optimal engine performance and fuel efficiency.
2、Excessive Evaporation of Oil and Water: This is another critical aspect to keep an eye on. As the temperature rises, the evaporation of both oil and water intensifies. This is particularly pronounced in the case of batteries, where the internal moisture evaporates rapidly, causing the liquid level to drop significantly. In severe cases, the electrode plates might even be exposed above the liquid surface, leading to premature damage and failure of the battery. Solution: Regular and meticulous checks of the battery are imperative. Ensure that the fuel tank cap is securely fastened to prevent evaporation and contamination. Be vigilant for any oil leaks in the oil pipe. Pay close and frequent attention to the water level in the radiator, the oil level in the crankcase, the brake fluid level in the brake pump, and the electrolyte density and liquid level in the battery. Maintaining these levels within the appropriate ranges is crucial for the smooth and safe operation of the vehicle and its components.
3、The Braking System: Special attention must be given to the braking system. In high-temperature conditions, the braking system is prone to evaporation and vaporization. This can lead to the formation of air resistance within the brake pipeline, significantly compromising the braking efficiency. Moreover, the brake shoes are more susceptible to overheating and burning, potentially resulting in complete brake failure. Solution: Regular inspections and adjustments of the braking system are indispensable. During extended downhill drives, it’s advisable to make intermittent stops to allow the brakes to cool. This helps ensure their sustained performance and reliability. If the brake hub is observed to be overly hot, it’s crucial to stop the vehicle and allow it to cool naturally. However, pouring cold water directly onto the hot brake hub should be strictly avoided as it can cause the hub to crack due to rapid temperature changes.
4、Tire Blowouts: As the temperature ascends, the ground temperature follows suit, presenting a considerable challenge for tires. In such circumstances, meticulous attention to tire pressure becomes paramount. Before setting off on a journey, it is prudent to lower the tire pressure moderately. Additionally, avoid prolonged periods of continuous driving. If the tire temperature is detected to be excessively high, it is essential to find a shady area to park and allow the tires to cool. During hot weather, the viscosity of engine oil decreases, and its antioxidant properties deteriorate, resulting in suboptimal lubrication. This can potentially lead to severe issues such as bearing bush and axle damage. Solution: Replace the lubricating oil in the crankcase and gearbox with the type specifically formulated for summer use. Regularly assess the quality and quantity of the lubricating oil. It is of utmost importance to note that lubricating oils from different brands should never be mixed, as this can have adverse effects on the performance and longevity of the engine and its components.
Not only truck-mounted cranes but also other specialized vehicles, such as mixer trucks and wrecker trucks, need to exercise caution during hot weather. Each vehicle type has its unique characteristics and requirements, but the common denominator is the need for heightened vigilance and proactive maintenance to ensure safe and efficient operation in challenging temperature conditions.
For instance, mixer trucks need to ensure that the concrete mixture does not harden prematurely due to excessive heat, and their cooling systems for the engine and the mixing drum must be in top condition. Wrecker trucks, on the other hand, need to have their towing and lifting mechanisms inspected regularly to prevent overheating and potential malfunctions.
In conclusion, hot weather brings forth a set of specific challenges for vehicle operation, especially for specialized vehicles like truck-mounted cranes. By being proactive in monitoring and maintaining critical components such as the fuel mixture, fluid levels, braking systems, and tires, and by adhering to appropriate preventive measures and maintenance schedules, the risks associated with high temperatures can be mitigated. This not only prolongs the lifespan of the vehicles but, more importantly, ensures the safety of operations and personnel on the road.
