The antifreeze is an indispensable component of the truck-mounted crane. The winter maintenance of the truck-mounted crane encompasses the replacement of the coolant. It is likely that many truck-mounted crane owners are familiar with the process of coolant replacement; however, the majority might not pay meticulous attention to the specific details. In reality, there are definite guidelines and rules governing the replacement of the antifreeze.
Pay Attention to Internal Cleaning Before Replacement
Before introducing new antifreeze, it is imperative to guarantee that the old antifreeze has been completely drained, and the internal of the cooling system has undergone a thorough cleaning. Failure to do so could result in the newly replaced antifreeze undergoing a significant color change within a short span of time.
Let’s elaborate on this point. Residual old antifreeze or contaminants within the cooling system can react with the new antifreeze, leading to chemical changes that affect its performance and appearance. A clean cooling system ensures that the new antifreeze functions optimally and maintains its properties for an extended period.
Prohibit Adding Water
Many vehicle owners have a tendency to substitute water for antifreeze, which is strictly prohibited. When tap water is added to the antifreeze, it not only elevates the freezing point but also gradually accumulates sediment due to impurities present in the tap water. This, in turn, ultimately impacts the efficiency of the cooling system.
Tap water contains minerals and impurities that can form deposits and scale within the cooling passages, restricting the flow of coolant and reducing the heat transfer capacity. This can lead to overheating of the engine and potential damage.
Prohibit Mixing Different Types of Antifreeze
Mixing different types of antifreeze is also strictly forbidden. Each type of antifreeze comprises distinct components and has varying freezing points. The selection should be based on the temperature conditions of the vehicle’s driving environment. Generally, the freezing point of the chosen antifreeze should be 10-15°C lower than the local minimum temperature to ensure that the antifreeze retains its anti-freezing functionality.
Different formulations of antifreeze may not be compatible, and mixing them can result in precipitation, gel formation, or changes in the chemical composition. This can compromise the protective properties and cooling efficiency of the mixture.
Prohibit Directly Adding Concentrated Antifreeze
The ethylene glycol concentration in the antifreeze is not directly proportional to its effectiveness. Adding high-purity concentrated antifreeze directly not only fails to meet the requirements of the engine cooling system for the antifreeze but can also trigger unexpected phenomena. Such occurrences may include the deterioration of the antifreeze, an increase in low-temperature viscosity, and a rise in engine temperature. Hence, when using concentrated antifreeze, it must be prepared in accordance with the specified requirements, and direct usage is strictly prohibited.
Concentrated antifreeze needs to be diluted to the appropriate concentration to provide the correct balance of heat transfer and freeze protection. Using it undiluted can lead to imbalances in the cooling system and potential engine damage.
Use the Same Brand and Model of Antifreeze
Since the production formulas of different brands and models of antifreeze can vary significantly, any mixture is likely to induce reactions among the various chemical components. This could lead to the loss of the original chemical characteristics of the antifreeze.
Consistency in brand and model ensures compatibility and stability of the antifreeze within the cooling system, minimizing the risk of chemical interactions and performance degradation.
Prohibit Direct Contact with the Skin
The ethylene glycol present in the antifreeze is an organic solvent and possesses a certain degree of corrosiveness. Extra caution must be exercised to avoid direct skin contact. During usage, ensure that it does not spill onto rubber products or paint surfaces. In the event of accidental spillage, immediate rinsing with clean water is essential to prevent damage to the components or the skin.
Ethylene glycol can cause skin irritation and absorption through the skin, posing health risks. Additionally, its contact with rubber and paint can cause deterioration and discoloration.
Test the Freezing Point of the Antifreeze Before Winter
Every year before winter, it is necessary to test the freezing point of the antifreeze within the engine cooling system. This helps prevent ineffective antifreeze from adversely affecting the normal operation of the engine.
Regular testing ensures that the antifreeze is capable of withstanding the anticipated low temperatures, providing adequate protection against freezing and ensuring the engine’s smooth start and operation in cold weather.
Replace the Antifreeze Regularly
To guarantee the seamless operation of the engine cooling system, it is essential to replace the antifreeze at regular intervals. The typical replacement cycle is approximately two years or 40,000 kilometers.
Over time, the properties and effectiveness of the antifreeze can diminish due to heat, chemical reactions, and contamination. Regular replacement ensures consistent protection and performance.
Regularly Check the Liquid Level of the Antifreeze
The liquid level of the antifreeze reservoir in the engine compartment should be inspected punctually every quarter. The normal liquid level should fall between the MAX and MIN marking lines. When it drops below the MIN marking line, it is necessary to replenish with the same brand and model of antifreeze in a timely manner.
Maintaining an appropriate liquid level is crucial for the proper functioning of the cooling system. Insufficient antifreeze can lead to inadequate cooling and potential overheating of the engine.
The aforementioned nine key points related to the replacement and usage of antifreeze for the winter maintenance of truck-mounted cranes are of significant importance. Owners should keep these points firmly in mind to ensure the efficient and reliable operation of their vehicles during the winter months.
By adhering to these guidelines and paying attention to the details of antifreeze maintenance, truck-mounted crane owners can safeguard their engines from the harsh effects of cold weather and extend the lifespan of their vehicles’ cooling systems.
