Bulldozers and excavators are core equipment in infrastructure construction, and their operational stability directly determines the progress, quality, and safety of the project. To prevent equipment from operating with defects and frequent breakdowns, major construction companies have fully implemented routine equipment operation and maintenance systems. Through meticulous, standardized, and routine maintenance management, they effectively ensure the stable operation of construction equipment, extend its service life, and reduce construction costs.

Construction machinery operates under heavy loads, high intensity, high dust, and complex terrain conditions, making it highly susceptible to problems such as hydraulic system wear, component aging, oil circuit blockage, and power system losses. If maintenance is not timely, it will not only reduce operational efficiency and increase energy consumption but also cause equipment failures, leading to construction stoppages and even safety accidents. Based on the equipment's operating characteristics and wear patterns, construction companies have developed tiered and categorized operation and maintenance plans, dividing maintenance into four major modules: daily inspections, periodic maintenance, quarterly overhauls, and annual major repairs.

Routine inspections are conducted daily by on-site equipment operators, focusing on key components such as equipment appearance, hydraulic lines, braking systems, power systems, and control systems. This includes timely cleaning of dust and debris from equipment surfaces, checking oil and coolant levels, and identifying and addressing potential simple malfunctions early. During regular maintenance, professional maintenance personnel periodically replace easily worn parts such as filters, lubricants, and seals, and adjust and tighten the transmission and travel systems to ensure smooth equipment operation.

Quarterly and annual maintenance focuses on core equipment components. Professional testing equipment is used to check hydraulic system pressure, engine operating conditions, and electrical system status. Severely worn parts are repaired or replaced, and equipment operating accuracy is calibrated and adjusted. Simultaneously, an equipment maintenance log is established, detailing the operating time, maintenance records, and fault handling for each piece of equipment, achieving dynamic management throughout the equipment's lifecycle. This standardized operation and maintenance model effectively reduces equipment downtime, significantly improves equipment uptime and operational stability, and provides solid equipment support for the continuous and steady progress of various infrastructure projects.