Introduction: After leaving the factory, loaders are generally required to undergo a run-in period of approximately 60 hours (sometimes called a "break-in period"). This is based on the articulated loader's initial technical characteristics. Do you know the usage and maintenance methods for loaders during the run-in period? Let's learn together!
The run-in period is crucial for ensuring proper operation of loaders, reducing failure rates, and extending their service life. However, some users, due to a lack of common sense about loader operation, tight deadlines, or a desire for quick returns, ignore the special technical requirements of the run-in period for new machines. Some users even believe that since the manufacturer provides a warranty, repairs are the responsibility of the manufacturer if the machine breaks down. As a result, they overload the machine for extended periods during the run-in period, leading to frequent early failures. This not only affects the machine's normal operation and shortens its service life, but also hinders project progress due to machine damage. Therefore, the applicability and maintenance of loaders during the run-in period should be given due attention. I. Characteristics of the Running-in Period
1. Rapid Wear
Due to factors such as the processing, assembly, and adjustment of new machine parts, their friction surfaces are rough, the contact area of mating surfaces is small, and the surface pressure is uneven. During operation, the uneven surfaces of the parts rub against each other, and the metal debris removed acts as abrasive, further accelerating the wear of the mating surfaces. Therefore, during the running-in period, parts (especially mating surfaces) are prone to wear and wear at a rapid rate. Overloading during this period can lead to damage to the parts and premature failure.
2. Poor Lubrication
Because the clearances of newly assembled parts are small and assembly processes make it difficult to ensure uniform clearances, lubricating oil (grease) struggles to form a uniform film on the friction surfaces to prevent wear. This reduces lubrication efficiency and causes premature wear of machine parts. In severe cases, this can cause scratches or seizures on the precisely fitted friction surfaces, leading to failure. 3. Loosening
Newly machined and assembled parts often have geometric and dimensional deviations. During initial use, previously tightened parts can easily loosen due to alternating loads such as shock and vibration, as well as heat, deformation, and rapid wear.
4. Leakage
Loosening, vibration, and heat can cause leakage on sealing surfaces and pipe joints. Some casting and machining defects are difficult to detect during assembly and commissioning, but the vibration and impact of operation can expose these defects, manifesting as oil (or water) leaks. Therefore, leakage is more likely to occur during the run-in period.
5. Frequent Operating Errors
Insufficient understanding of the machine's structure and performance (especially for new operators) can easily lead to malfunctions and even accidents due to operating errors.
II. Usability and Maintenance During the Run-in Period
1. Because construction machinery is a specialized vehicle, operators must receive manufacturer training and guidance, have a thorough understanding of the machine's structure and performance, and acquire sufficient operating and maintenance experience before operating it. The manufacturer's "Product Operation and Maintenance Manual" is essential documentation for operators of equipment. Before operating the machine, be sure to read it and perform maintenance as required.
2. Pay attention to the workload during the run-in period. Half of the workload during the run-in period should not exceed 60% of the rated workload. An appropriate workload should be arranged to prevent overheating caused by prolonged continuous operation.
3. Regularly monitor all instrument indicators. Stop the machine immediately and correct any abnormalities. Operation should be suspended until the cause is identified and the fault is resolved.

4. Regularly check the level and quality of lubricating oil, hydraulic oil, coolant, brake fluid, and fuel (water), and ensure the seals of the entire machine are properly sealed. If excessive oil or water is detected during inspection, the cause should be analyzed. Lubrication points should also be strengthened. 

It is recommended that grease be added to all lubrication points during the run-in period (unless otherwise required). 

5. Keep the machine clean and promptly adjust and tighten loose parts to prevent further wear or loss.

6. After the run-in period, the machine should undergo mandatory maintenance, including inspection and adjustment, and oil changes.
In summary, the requirements for front end loader maintenance during the run-in period can be summarized as: enhanced training, reduced loads, careful inspections, and enhanced lubrication. By paying attention to and following the required maintenance and care during the run-in period, premature failures can be reduced, the machine's service life extended, operational efficiency improved, and the machine will generate more revenue for you.