Daily inspection is the basic guarantee for safe and efficient operation and prolonged service life of small excavators, which can find and repair all kinds of faults and defects in time, and avoid further development into key faults and even serious damage to excavators. Regular construction teams basically have their own equipment management methods, and inspect the designated parts of small excavators according to certain standards and periods. It is required that excavator operators should master basic theoretical knowledge, understand the performance of excavators, and be able to diagnose and eliminate simple faults. For the general self-employed, it is of great significance to do a good job in the daily inspection of excavators to improve the production efficiency of excavators and reduce the use and maintenance costs.

The daily inspection objects of small excavators include the whole machine, engine, main hydraulic components, walking system, left and right side rooms, working devices, oil residue, electric lights and wipers. By visual inspection and touch. Wx.5 1pj.cc excavator recruitment job-hunting specialized driver market.

Maintenance method steps:

1. Check the appearance of the whole machine first, and then check whether there are cracks and oil leakage around the chassis of the machine; Then check whether there is oil infiltration in the fastening bolts around the deceleration mechanism of the main reducer and the four wheels. If it is loose, tighten it according to the specified torque and sequence. If damaged, replace it in time. If it is a tire excavator, check whether the tires are in good condition and whether the air pressure meets the requirements.

2, check the bucket and bucket teeth, blunt bucket teeth should be replaced immediately, according to the relevant data, bucket cutting resistance will increase by 60%~80% when the bucket teeth are worn, which will greatly reduce the bucket loading efficiency.

Carefully check whether there are tiny cracks in the boom and stick, whether the oil cylinder leaks oil and whether it is filled with butter. The battery is the power supply of the excavator electrical system. Check whether the remaining amount of electrolyte in the battery is above the lowest horizontal line to ensure the normal power supply of the battery.

3. The air filter element is the primary checkpoint for air to enter the engine, and the filtered clean air enters the cylinder to participate in fuel combustion. Check the air filter element and clean the dust with compressed air. Use excavators in areas with high air dust content, and check the air filter element more frequently.

4. Check the oil inlet and oil outlet of the hydraulic pump to ensure no leakage and looseness. The fuel filter and oil filter in the pump room should be replaced according to the time specified by the manufacturer. If they work in bad working conditions for a long time, they can be replaced in advance. The number of hydraulic oil gauge is hidden on the lock edge of the chamber door, so don't forget to check the remaining hydraulic oil when checking the pump chamber. Make sure that the oil level is between the "L" and "H" scales on the cursor. If it is lower than the "L" scale, it should be filled up. When the oil level is abnormal, find out the reason as soon as possible and check again after troubleshooting. Due to the particularity of the excavator's working site, the machine should be placed on the horizontal section for inspection as far as possible to obtain more accurate oil gauge line. In addition, the normal operation of the engine also needs sufficient fuel and cooling water, and the inspection of the fuel tank and water tank is also a spot inspection.

Apply proper pressure in the middle of a single belt, and check whether the belt subsidence is within the specified range, otherwise, adjust the belt tension. When replacing new belts, they should be replaced in groups. After the engine is started, mainly check whether the various speeds displayed on the instrument are running normally, and it is required that there is no abnormal sound and smoke. Otherwise, immediately stop the machine for inspection.

5. Check the oil quantity of the rotating deceleration mechanism. The oil level should be at the position specified by the dipstick. If the oil is not enough, fill it up. At the same time, attention should also be paid to the contact of all tubing joints, requiring no leakage, looseness and damage. Special reminder: when replenishing or replacing engine oil (fuel, lubricating oil, hydraulic oil, coolant, etc.). ), the oil recommended by the original factory should be used according to the requirements of the excavator operation manual, and it should be kept clean to prevent dust and foreign objects from mixing into the oil.

To do a good job in the daily inspection of hydraulic excavators, operators are required to read the operating instructions of excavators carefully, and have a thorough and detailed understanding of the specifications and performance of excavators, the principle of hydraulic systems, the structure and characteristics of hydraulic components, etc. Constantly improve their professional theoretical knowledge and enrich their practical experience in installation, use, maintenance and repair.

After the necessary routine inspection of each machine-team, the maintenance after every 50 hours, 150 hours, 500 hours, 1000 hours and 2000 hours (the time required for each excavator model is slightly different) should be carried out in time to keep the excavator working in good condition and prolong the service time.