1. The principle of simplicity:
The manufacturer of mini crawler excavators tells you that you should start with simple and easy-to-handle failures, analyze and confirm them one by one from simple to complex. Mini crawler excavators manufacturers tell you that most modern excavators are machine-electric-hydraulic integrated products with high technical content. When we deal with faults, we generally check the electrical system first, then the hydraulic system, and finally the mechanical transmission system. The manufacturer of mini crawler excavators tells you to check the hydraulic system step by step in the order of auxiliary oil circuit, control oil circuit, main oil circuit and key components. Never dismantle or unload it indiscriminately as soon as it encounters a fault, so as not to expand the scope of the fault or cause new faults.

2. The principle of probability:
The manufacturer of mini crawler excavators tells you that it refers to the principle of selecting the best based on the possibility of various failure hypotheses.
The manufacturer of mini crawler excavators tells you that according to the time and space conditions of the machine used, the model structure and related failure factors, combined with maintenance experience, give priority to the most likely failure hypothesis. The mastery of this principle directly reflects the quality and technical level of maintenance personnel.
3. Benefit principle:
The manufacturer of mini crawler excavators tells you to give priority to the failure hypotheses that can be confirmed as soon as possible, and the failure hypotheses that have the least damage to the entire machine or system, and require the least tools, means, and costs.
4. The principle of thinking carefully and slowly:
Fault diagnosis and maintenance personnel are required to think diligently, give full play to their subjective initiative, and safety first. Mini crawler excavators manufacturers tell you not to adjust or disassemble parts that should not be easily adjusted or disassembled, especially those that are unfamiliar and difficult to confirm or adjust. Parts that are not easy to restore afterwards, such as the pressure valve and throttle valve of the hydraulic system.
At present, mini crawler excavators have the highest utilization rate among agricultural machinery, which can be applied to most of the work needs of agricultural production. Because of the frequent use, individual failures are inevitable, so when you encounter problems, you should try to follow them correctly. To prevent damage to mini crawler excavators.
Mini crawler excavators have a wide range of applications, high cost performance, low fuel consumption, easy operation, and novices can quickly get started. It is the first choice for agricultural machinery for reclaiming loose ground and planting fruit trees.