Author: Site Editor Publish Time: 2025-04-03 Origin: Site
When you buy a second-hand heavy excavator, if you want it to keep running efficiently, maintenance is particularly important. Because the second-hand machine has been used for a period of time, some parts may wear or age. Regular maintenance can not only extend the life of the equipment, but also make the work efficiency more stable. Let's talk about the maintenance skills of second-hand heavy excavators. It is simple and easy to understand and easy to use.
1. Daily cleaning is very important
First of all, keeping the equipment clean is a basic skill after each work. When the excavator is working outdoors, it is inevitable that it will be stained with mud and dust, especially the engine and hydraulic system. Too much dust may affect the heat dissipation effect and thus affect the performance of the machine. You can use an air gun or a water gun to clean it, but be careful not to let water enter the electrical components and keep it dry. If the excavator is not cleaned for a long time, the accumulated mud and sand may also cause increased wear of parts and increase maintenance costs.
2. Check the hydraulic system regularly
The hydraulic system is the "power source" of the excavator and is responsible for driving the operation of various components. For second-hand equipment, the quality of the hydraulic oil and the state of the hydraulic pipe need special attention. First of all, regularly check the level and quality of the hydraulic oil to see if there is any discoloration, odor or impurities mixed in. If the oil quality is not good, it is time to replace the hydraulic oil. In addition, check whether there is oil leakage in the hydraulic pipeline and joints. If cracks or aging are found, replace them as soon as possible to avoid downtime caused by hydraulic failure.
3. Pay attention to engine maintenance
The engine is the "heart" of the excavator, especially for second-hand excavators. The engine may have been running for a long time. First of all, check the oil level before each start. Insufficient oil may lead to insufficient lubrication, which will damage the engine. Replace the oil and oil filter on time to keep the engine in good lubrication and reduce wear. In addition, the air filter should also be cleaned or replaced regularly to prevent impurities in the air from entering the engine cylinder and affecting combustion efficiency.
4. Check the track and chassis regularly
Excavators often operate on rugged ground, and the chassis and track parts are prone to wear. Especially for second-hand equipment, the track may have been worn to a certain extent. Check the track tension to avoid being too loose or too tight. Too tight will aggravate the wear of the track and chassis, and too loose will easily cause the track to fall off. The various bolts of the chassis should also be checked regularly to ensure that they are not loose and can be replaced if necessary.
5. Cooling system maintenance cannot be ignored
The cooling system of a second-hand excavator is also very important because the engine is working under high load and is prone to heat. The coolant level should be kept within the appropriate range and the coolant should be replaced every once in a while, especially when working in summer or high temperature environments. In addition, the cooling fins of the water tank should be kept clean to ensure good heat dissipation. If the cooling system is well maintained, the engine will be safer when working and will not easily stop due to overheating.
6. Do a good job of lubrication
The excavator has many movable joints, such as the arm, forearm, bucket and other parts, which need lubrication. Regularly applying butter can make these joints run smoother and reduce wear. Especially for second-hand equipment, the lubrication of some parts may not be as good as that of new machines, so it is necessary to lubricate frequently during use to extend the service life of parts.
Summary
The key to maintaining a second-hand heavy excavator is "frequent inspection, early detection, and timely treatment". Whether it is the engine, hydraulic system, chassis or cooling system, each part needs careful maintenance. As long as these basic maintenance work is done properly, the second-hand excavator can still work efficiently, with fewer breakdowns, helping you save a lot of maintenance costs.
