Chenglong Liuzhou 6x4 Cleaning and Suction Sewer Truck with 21 Cubic Meter Tank Capacity

1. Product Overview

The Liuzhou 6x4 Combination Unit is a heavy-duty combination sewer truck designed for municipal pipeline maintenance, industrial waste management, and emergency environmental cleanup. Built on a Chenglong Liuzhou H5 high-top double bunk chassis, this model integrates a powerful Yuchai 350HP main engine with a 21 cubic meter tank capacity, enabling efficient high-pressure cleaning and vacuum suction operations. The vehicle features a dual-power system with a refurbished Weichai 460HP secondary engine driving a Shandong 2BE258 water circulation pump, ensuring superior performance in demanding environments. As a reliable vacuum suction unit, it is ideal for urban sanitation departments and industrial cleaning contractors requiring versatile sewer maintenance equipment.

2. Key Specifications

• Chassis Model: Chenglong Liuzhou H5 (Liuzhou rear eight wheels configuration)

• Cab Type: High-top double bunk sleeper cab with air conditioning

• Wheelbase: 4500mm + 1350mm (total 5850mm)

• Main Engine: Yuchai 350HP (Euro VI emission standard, 6-cylinder diesel)

• Secondary Engine: Refurbished Weichai 460HP electronic injection (driving vacuum pump)

• Transmission: Fast ten-speed manual gearbox (10JS120)

• Frame: 300mm (8+4) reinforced frame with local three-layer reinforcement

• Front Axle: 5.5T capacity

• Rear Axle: Maintenance-free 2 x 440 rear axles with 5.143 ratio and widened brakes

• Tires: 11.00R20 steel cord radial tires (10 units)

• Total Tank Capacity: 21 cubic meters (approximately 5,550 US gallons)

• Fresh Water Tank: 5 cubic meters (1,320 gallons) for high-pressure cleaning

• Sludge Tank: 16 cubic meters (4,230 gallons) for vacuum suction

• Tank Wall Thickness: 8mm (main body and heads) for durability

• High-Pressure Pump: Pinfl 350 flow rate with large filter cup

• Vacuum Pump: Shandong 2BE258 water circulation pump (belt-driven by Weichai 460HP)

• Hose Reel: Hydraulically controlled reinforced reel with 100 meters of 25mm high-pressure hose

3. Dimensions, Material & Design Philosophy

• Design Philosophy: This integrated tank vehicle features a hydraulic lifting system for efficient unloading and a dual-compartment tank design allowing simultaneous cleaning and suction operations. The high-top double bunk cab enhances operator comfort for long-duration projects, while the heavy-duty chassis ensures stability during operation. As a specialized waste suction truck, it prioritizes operational efficiency and durability.

• Construction Materials: The tank is constructed from high-strength steel with 8mm wall thickness and 8mm head thickness to withstand pressure during vacuum operations. The sludge compartment is lined with stainless steel plates for corrosion resistance against acidic waste. The frame features a 300mm reinforced structure with 8+4 steel plates and local three-layer reinforcement for maximum load-bearing capacity.

• Tank Details and Operational Features: The tank is equipped with internal access ladders in both compartments for maintenance. A 700mm hydraulic rear opening with small cover provides access for discharge. Additional fittings include a 6-inch stainless steel ball valve for waste discharge, one 4-inch self-flow port on the left, one 4-inch stainless steel angled suction port and one 4-inch self-flow port on the right, and one 4-inch feed inlet. A concealed 6-inch stainless steel emergency discharge valve is located near the right rear wheel for flexible operation.

4. Structural & Component Advantages

• Engine and Transmission Advantages: The Yuchai 350HP main engine provides reliable power for road transport and cleaning tasks, paired with the Fast ten-speed gearbox for optimal torque management across varying conditions. The refurbished Weichai 460HP electronic injection secondary engine delivers exceptional power to the Shandong 2BE258 water circulation pump, ensuring powerful vacuum suction capability for heavy sludge removal. This dual-engine system enables independent operation of cleaning and suction functions, enhancing on-site efficiency.

• Chassis and Axle Advantages: The 4500mm+1350mm wheelbase configuration provides excellent stability during operation, making it suitable for rough terrain. The maintenance-free 2 x 440 rear axles with 5.143 ratio and widened brakes reduce maintenance requirements while enhancing stopping power. The 300mm reinforced frame with local three-layer reinforcement ensures durability under heavy loads, typical for heavy-duty vacuum trucks.

• Pump and Vacuum System Advantages: The Pinfl 350 high-pressure pump features a large filter cup for extended pump life and consistent water pressure for pipeline cleaning. The hydraulically controlled reinforced hose reel with 100 meters of 25mm hose provides extended reach for deep pipeline networks. The 2BE258 water circulation pump driven by the secondary engine delivers high vacuum efficiency for rapid sludge collection.

• Driver Comfort and Safety Advantages: The Chenglong Liuzhou H5 cab provides exceptional comfort with air conditioning, adjustable seats, and a double bunk for rest during long shifts. Safety features include directional arrow lights, warning lights, reversing camera, and comprehensive instrumentation. The vehicle includes specialized cleaning accessories including a 60cm direct injection nozzle and an imperial-style cleaning head for versatile operation in different pipeline diameters.

5. Product Features & Chengli Group Advantages

• Operational Efficiency Features: The hydraulic tank lifting system enables rapid unloading of collected waste, reducing downtime between operations. The dual-compartment design with 5 cubic meters water and 16 cubic meters sludge allows extended operation without frequent refilling. The 6-inch stainless steel ball valves and multiple 4-inch ports provide flexible discharge and suction options for various site requirements. This sewer cleaning combination unit is engineered for maximum productivity in municipal applications.

• Advanced Configuration Options: This model includes a refurbished Weichai 460HP secondary engine with electronic injection for reliable vacuum pump operation. The stainless steel lining in the sludge tank provides excellent corrosion resistance against acidic and alkaline waste materials. The concealed 6-inch emergency discharge valve offers additional operational flexibility for challenging sites. Additional options include remote control operation and enhanced filtration systems.

• Chengli Group Manufacturing Advantages: As a flagship product of Chengli Special Automobile Co., Ltd. — a leading manufacturer in China's specialized vehicle industry — this cleaning and suction truck benefits from rigorous manufacturing standards and comprehensive after-sales service networks. Chengli's expertise ensures precise execution of complex integrations such as the dual-power system and hydraulic lifting mechanism. Clients receive a reliable combination unit with optimized lifecycle costs and genuine manufacturer support for both the main chassis and specialized equipment. With decades of experience in municipal vehicle manufacturing, Chengli delivers proven reliability for global customers.