The market for truck-mounted cranes is expanding at an accelerating pace. This is primarily because it aligns with the contemporary development trends and finds extensive application in various domains such as certain engineering constructions and garden projects. Similar to other specialized vehicles, the engine of the truck-mounted crane, from time to time, can exhibit “mood swings” or malfunctions. So, precisely what are the prevalent faults that are typically encountered in the engine of the truck-mounted crane?
Engine overheating. This particular type of engine fault has manifested in numerous engines, particularly during the summer season. It is primarily triggered by abnormalities within the cooling system. The causes for an abnormal cooling system encompass thermostat malfunction, radiator failure, fan non-rotation, radiator blockage, and several other factors. When an anomaly is indicated in the cooling system on the dashboard of your truck-mounted crane, it is imperative that you bring the vehicle to a halt and conduct an inspection to determine if there is any leakage of the coolant. If a leak is detected, it is not advisable to immediately add coolant. Instead, coolant can be added only after the engine temperature has returned to its normal range.
Let’s explore this issue in greater depth. The thermostat plays a crucial role in regulating the engine’s operating temperature by controlling the coolant flow. If it malfunctions, it may either prevent the coolant from circulating when it should or allow excessive coolant flow, both of which can lead to overheating. The radiator is responsible for dissipating the heat from the coolant. A damaged or clogged radiator reduces its heat dissipation capacity, causing the engine temperature to rise. The fan helps to enhance the air circulation through the radiator. If it fails to rotate, the cooling efficiency is severely compromised.
Abnormal lubricating oil:
If the dashboard of the truck-mounted crane indicates insufficient lubricating oil, it is typically attributed to three main reasons: Firstly, there might be an issue with the engine piston seal, resulting in an excessive clearance between the piston and the cylinder wall, thereby causing oil consumption through burning. Secondly, severe wear of the engine components can gradually lead to excessive clearances among the components, subsequently resulting in abnormal lubricating oil consumption. Thirdly, the utilization of substandard or non-compliant lubricating oil can lead to abnormal fuel consumption.
When the piston seal is compromised, it allows for the passage of oil into the combustion chamber, where it is burned along with the fuel-air mixture. This not only leads to oil depletion but also can cause deposits and reduced engine performance. Severe component wear results in increased clearances that allow oil to escape and be consumed at an accelerated rate. Using incorrect or poor-quality lubricating oil can fail to provide the necessary lubrication and protection, leading to increased friction and subsequent abnormal oil consumption.
Abnormal color of the truck-mounted crane exhaust emissions:
The normal exhaust color of the truck-mounted crane should be colorless. However, when the engine malfunctions, the color of the exhaust emissions undergoes a change. When the exhaust appears black, it indicates that the fuel is not undergoing complete combustion. At such times, sensors related to the intake air should be inspected. If the fuel fails to meet the combustion standards or if it contains moisture, white exhaust emissions will be observed. In such cases, it becomes necessary to inspect the spark plugs or the quality of the fuel. When the exhaust of the truck-mounted crane turns blue, it is generally due to excessive wear of the piston rings or misalignment of the oil rings. At this juncture, it is essential to promptly investigate and address the problem.
The black exhaust color often suggests an imbalance in the air-fuel mixture or problems with the fuel injection system. Insufficient oxygen or improper fuel atomization can prevent complete combustion, resulting in black smoke. White exhaust could be an indication of coolant leakage into the combustion chamber or issues with the fuel’s vaporization and combustion process. Blue exhaust is a sign of oil seeping into the combustion chamber, usually due to worn piston rings or oil ring problems, which can cause significant engine damage if not addressed promptly.
Strange smell in the engine compartment:
Affected by the high temperature generated by the engine, the surrounding wires are prone to burning or coking, thereby emitting a pungent odor. Excessive application of lubricating grease can also give off an abnormal smell as the engine temperature rises. When your truck-mounted crane emits an abnormal smell during driving, it is essential to stop the vehicle and conduct an inspection promptly. Addressing the issue in a timely manner helps prevent the escalation of the problem and potential more severe consequences.
The high temperatures within the engine compartment can cause the insulation of wires to deteriorate or even catch fire, especially if there are wiring faults or shorts. Excessive lubricating grease can liquefy and vaporize at high temperatures, emitting an unpleasant smell. Ignoring these abnormal smells can lead to electrical failures, engine damage, or even fire hazards.
In conclusion, being vigilant about these common engine faults and taking prompt action upon their detection is crucial for maintaining the optimal performance and reliability of the truck-mounted crane. Regular inspections, proper maintenance, and immediate attention to any anomalies can significantly extend the engine’s lifespan and ensure the safe and efficient operation of the vehicle.
