Engine oil accumulation combined with multiple machines is a common practice. When engine oil needs to be changed, not all of it is replaced. Instead, fresh oil is simply added to the crankcase, leading to the belief that this method both ensures proper lubrication for the diesel engine and saves costs. However, in reality, after prolonged use, oil degrades, impurities increase, and its lubricating properties diminish. Even if new oil is frequently added, it cannot restore the oil quality to an acceptable level, which can cause accelerated wear on critical components such as cylinder liners and pistons, significantly shortening their lifespan. Additionally, the buildup of impurities can stick to the walls of the oil passages. In severe cases, this may lead to blockages, causing serious issues like seized bearings or burned-out components.
Improper adjustment of valve clearance is another common mistake. Many operators do not use specialized tools to measure the clearance but instead rely on the feel of the rocker arm when shaking it. This can result in improper valve operation, increased fuel consumption, and reduced engine power. In extreme cases, it may even cause collisions between the piston and the valve, leading to major failures such as broken connecting rods, damaged crankshafts, or bent pistons.
Ignoring carbon buildup in the exhaust pipe is another issue. Many operators neglect to clean the exhaust system regularly, allowing carbon deposits to accumulate over time. This narrows the cross-section of the exhaust pipe, restricting the flow of exhaust gases and causing problems like increased fuel consumption, loss of power, and overheating. To prevent these issues, it's recommended to clean the exhaust pipe at least once every three months to ensure smooth operation of the diesel engine.
After a new machine is put into service, some operators immediately subject it to heavy loads, thinking it will help "break in" the machine faster. However, it's essential to follow the manufacturer’s recommended break-in procedures, gradually increasing speed and load. This allows the friction surfaces of the parts to become smoother and more evenly worn, improving performance and longevity. Unfortunately, some operators skip this process entirely, directly putting the machine under heavy use, which can drastically reduce its service life.
Many operators also fail to properly inspect the machinery before and after operation. This oversight can lead to loose or detached parts during operation, posing a risk to both equipment and personnel. Therefore, it's crucial to conduct thorough inspections before and after each use, checking bolts, nuts, washers, and split pins in all areas. Any loosened components should be tightened immediately, and missing or damaged parts must be repaired right away. Addressing small issues promptly helps prevent larger, more costly problems down the line.
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