Currently, the Chinese government is placing increasing emphasis on environmental protection nationwide, intensifying regulatory enforcement across the board. Certain institutions and departments are now required to implement appropriate waste treatment measures and deploy specialized sanitation vehicles. Open-air discharge and manual burial of waste are no longer permitted. As penalties grow stricter, enterprises are investing ever more heavily in environmental protection initiatives. National environmental projects are advancing toward a future where people enjoy healthier living environments and sanitation operations become increasingly intelligent. Sanitation vehicles are becoming increasingly common on urban roads—water-sprinkling trucks, garbage trucks, and street sweepers frequently traverse city streets and alleys, acting like “beauticians” within the city’s circulatory system, purifying its “blood” and revitalizing its appearance. Sanitation vehicles play an ever-greater role in urban environmental protection, with their workload continuously increasing. Among them, garbage trucks perform the dirtiest and most physically demanding tasks—bearing hardship silently while working diligently. Many garbage trucks seen on roads appear visibly soiled, largely because heavy daily workloads leave little time for routine maintenance or cleaning. However, prolonged operation without proper care leads to accumulation of dust and debris on both exterior surfaces and interior components, accelerating wear on wiring harnesses and hydraulic lines, increasing operational load, and raising the risk of component failure. Regular cleaning and targeted inspections of critical systems can significantly reduce breakdowns and extend vehicle service life. Without maintenance, garbage trucks may become unusable after just two or three years; with proper care, however, they can operate reliably for 5–7 years. Investing a small amount of time in routine vehicle upkeep can save enough money to purchase an entirely new unit—so why wait? **Step 1: Exterior Body Cleaning** The vehicle body typically accumulates dust, mud, and oil residues. Use a hose or high-pressure water jet to rinse the surface thoroughly—from top to bottom. Avoid using laundry detergent or other household cleaning agents, as their high alkaline content can gradually dull the paint finish, causing loss of gloss, matte appearance, or even cracking. Instead, use professional automotive shampoo or mild shampoo, applying it with a soft cloth to remove stubborn oil stains that cannot be rinsed away. Next, rinse the rear section of the vehicle, followed by the underbody. During this step, ensure thorough cleaning of the chassis—including edges, curved sections, and mudguards. Pay special attention to sand and grime lodged in wheels, brake discs, fenders, front grille assemblies, door frames, and side skirts. **Step 2: Cab Interior Cleaning** Prolonged use exposes the cab interior to smoke, dust, driver sweat, and contaminants recirculated through the HVAC system—leading to air pollution, bacterial growth, unpleasant odors, seat upholstery mold, and leather deterioration. These conditions not only compromise health and well-being but also impair driver focus and comfort. Therefore, periodic professional interior care—including vacuuming and deep cleaning—is essential. Additionally, inspect instrument panel wiring regularly; replace aging or damaged wiring promptly and address any faults immediately. **Step 3: Compartment Interior Cleaning** Garbage trucks feature sealed cargo compartments, making complete internal cleaning challenging. Focus instead on high-priority areas. Regularly inspect connection points between the compartment structure and moving components (e.g., sliding plates, hydraulic cylinders); remove any foreign objects lodged there to prevent accelerated wear. Promptly clean excessive waste buildup from pusher plates and hydraulic cylinders to maintain optimal op