Sitrak G7S Tractor

Sitrak G7S Tractor - Introduction, Detailed Specifications & Operation Guide

Basic Parameters

• Brand & Model: Sinotruk Sitrak G7S Heavy-Duty Tractor (optional configurations for different transportation scenarios)
• Drive Type: 4×2 / 6×4 (optional), mainly 6×4 drive configuration (6 wheels in total, 2 front steering axles and 2 rear driving axles), suitable for heavy-load long-distance transportation
• Wheelbase: 3200mm / 3600mm / 3800mm / 4200mm (optional configurations, adjustable according to traction needs and trailer matching)
• Overall Dimensions (L×W×H): 6800–7800mm × 2550mm × 3900–4100mm (varies with cab type and configuration)
• Curb Weight: 8.8–9.5 tons (lightweight optimized design, adopting high-strength materials to balance weight and load-bearing capacity, meeting national standard limits)
• Gross Combination Weight (GCW): 49–60 tons (in line with national heavy-duty vehicle standards, customizable according to export regional requirements)
• Emission Standard: Euro 4 / Euro 5 / Euro 6 (China National IV / V / VI), optional configurations meeting local emission standards for specific export regions
• Tire Specification: 12R22.5 / 295/80R22.5 (6 tires in total), optional low-rolling resistance energy-saving tires and all-weather tires, adapting to different road conditions of long-distance transportation

Powertrain System

• Engine: Optional Sinotruk MAN MC series (MC11H / MC13H) or Weichai WP14T series diesel engine; optional clean energy configurations according to market needs
• Displacement: 10.5L (MC11H) / 12.4L (MC13H) / 13.5L (WP14T)
• Max Power: 440–610 HP (324–449 kW), optional 460HP / 510HP / 610HP according to transportation scenarios; the WP14T engine, as the exclusive T-power of Sinotruk, is the world's first diesel engine with a thermal efficiency exceeding 51%, with a maximum power of 610 HP and strong explosive power
• Peak Torque: 2100–2750 N·m, with maximum torque speed of 900–1400 rpm (wider economic speed range), ensuring excellent climbing performance and low-speed torque, easily adapting to long uphill sections and heavy-load starting
• Features: Inline 6-cylinder, turbocharged & intercooled, direct injection, electronic control high-pressure common rail technology, strong low-speed torque, fast heat dissipation, and excellent fuel economy (the fuel consumption in common working conditions is 2L/100km lower than that of competitors); the B10 service life is as high as 1.8 million kilometers, with a long maintenance cycle, suitable for long-distance high-intensity continuous operation
• Transmission: The Sitrak G7S Tractor comes standard with a China National Heavy Duty Truck Group's seventh-generation S-AMT16 automatic transmission, and a manual transmission can also be selected according to user needs; it is perfectly matched with the engine to form a dedicated high-efficiency powertrain with stable performance and high reliability.

Traction System & Fuel Supply

• Traction Device: Equipped with a high-strength traction saddle (optional 50# / 90#), made of high-quality alloy steel, with strong traction capacity and wear resistance; the traction pin is quenched and tempered, with high hardness and impact resistance, suitable for long-term heavy-load traction work
• Traction Capacity: 160–200 kN, meeting the traction needs of different types of trailers (container trailers, bulk cargo trailers, cold chain trailers, etc.)
• Design: Equipped with a quick-release device, which is convenient for connecting and disconnecting the trailer, improving operation efficiency; the traction saddle is adjustable, adapting to different trailer connection positions, ensuring stable traction and reducing chassis wear during long-distance driving
• Fuel Supply System: Equipped with a 1100L large-capacity aluminum fuel tank as standard, corrosion-resistant and lightweight, realizing a long endurance of 3300 kilometers, avoiding frequent refueling during long-distance transportation[1][3]; optional 600L+400L dual fuel tank configuration, meeting the needs of ultra-long-distance transportation without refueling
• Fuel Filter: Equipped with a high-efficiency multi-stage fuel filter, which can effectively filter impurities and water in the fuel, protect the engine fuel injection system, and adapt to different fuel quality in various regions
• Additional Configuration: Optional fuel tank heating function, suitable for low-temperature areas, preventing fuel from freezing and ensuring normal operation in cold weather

Cabin & Safety Configuration

• Cabin: Integral all-steel collision-proof structure, ECE-R29 collision safety certification, 4-point full hydraulic suspension; overall adoption of cage structure, which significantly improves impact resistance and deformation resistance, and the safety reaches the world-class level; high-top double sleeper cab with flat floor design, improving interior space comfort and accessibility
• Interior: Spacious and comfortable, comprehensive application of advanced sound insulation, heat insulation materials and multiple shock absorption and noise reduction processes, with idle noise as low as 52dB, effectively isolating noise and vibration during driving; equipped with multi-adjustable airbag shock-absorbing driver seat with ventilation and heating functions, 850mm wide sleeper bed, energy-absorbing multi-functional steering wheel (convenient for blind operation), 12.3-inch intelligent central control screen, floating color LCD instrument panel, automatic constant temperature air conditioning, high-fidelity audio and multi-layer storage space, effectively reducing driving fatigue during long hauls
• Additional Configuration: Optional electric cab lifting, intelligent terminal, 4-directional camera (with blind spot monitoring and early warning function), intelligent fault diagnosis system (real-time monitoring of vehicle status), manual sunroof and parking air conditioning; the central control panel is reasonably arranged, with fuel tank heating, DPF regeneration and light conversion switches within easy reach, improving operation convenience
• Safety Configuration: Comprehensive safety protection, ensuring driving safety under heavy load and long-distance complex road conditions, in line with European safety standards

 Pre-Operation Inspection
Before starting the vehicle, conduct a comprehensive inspection to eliminate potential safety hazards and ensure normal operation, in line with the safety operation specifications of heavy-duty tractors:

1. Exterior & Chassis: Check the tire pressure and wear condition of all tires, ensure wheel nuts are fastened; inspect the traction saddle, traction pin and connecting bolts for looseness, deformation or wear; check the drive shaft, axle and chassis bolts for tightness and damage; confirm the ground clearance is normal, and remove obstacles on the driving path to avoid tire or chassis damage during driving.
2. Fluid Inspection: Check the levels of engine oil, coolant, fuel and brake fluid to ensure they meet the standard; drain the accumulated water in the fuel filter in time; inspect the oil pipeline and brake pipeline for tightness, and check for oil leakage or air leakage; ensure the oil temperature and water temperature are within the normal range before operation, especially in cold areas.
3. Cab & Electrical System: Test the vehicle lights, horn, wiper and instrument panel display to ensure all electrical equipment works normally; check the airbag seat, suspension system and steering system for normal operation; confirm the parking brake is in effective braking state; adjust the rearview mirror and central control screen, and check the 4-directional camera and blind spot monitoring function to ensure good driving vision; check the traction saddle locking device to ensure it is locked reliably.

 Vehicle Starting & Daily Driving

1. Insert the key, turn to the "ON" position, wait for the vehicle self-inspection to complete (no fault alarm), then turn to the "START" position to start the engine. For the S-AMT16 automatic gearbox version, ensure the gear is in neutral before starting; start the engine in a well-ventilated area to avoid exhaust pollution.
2. After starting, let the engine idle for 3–5 minutes to warm up, observe the instrument data (engine speed, oil pressure, water temperature) to ensure all indicators are normal. In low-temperature areas, preheat the engine to 30–40℃ before starting; do not start the engine with full load when the water temperature and oil temperature do not meet the requirements, to avoid damaging the powertrain.
3. Release the parking brake, confirm the gear is in neutral (for automatic gearbox, switch to D gear), step on the accelerator gently to start smoothly, avoiding violent acceleration and harsh gear shifting, especially when pulling a heavy-load trailer to prevent drive shaft or tire slipping; honk the horn before starting to warn surrounding personnel.
4. Maintain a stable speed during driving: the maximum speed on highways shall not exceed 90km/h, and the speed on ordinary roads shall be controlled within 60km/h. For long downhill sections, use low gears and engine brake to avoid frequent braking, which may cause brake failure; do not change direction or shift gears when the vehicle is moving at high speed, and keep a safe distance from the vehicle in front.
5. When driving on muddy, snowy or slippery roads, turn on the differential lock to improve wheel grip and passability; avoid sharp turns at high speed to prevent rollover. For steep slopes, use low gears to ensure sufficient power and avoid slipping; when climbing, maintain a stable speed and do not shift gears frequently.
6. During long-distance driving, pay attention to the fuel level and instrument prompts, and refuel in advance when the fuel is low; use the cruise control function appropriately to reduce driving fatigue and improve fuel economy; check the trailer connection status regularly during driving to ensure safe traction.

 Trailer Connection & Disconnection Operation

1. Trailer Connection: Drive the tractor to the front of the trailer, keep the tractor and trailer in a straight line, and slowly approach the trailer until the traction pin is aligned with the traction saddle; lower the tractor's suspension appropriately to make the traction pin insert into the traction saddle; lock the traction saddle locking device, and check to confirm it is locked reliably; connect the trailer's air circuit and circuit connectors, and test the trailer's lights and brakes to ensure they work normally; check the trailer's tire pressure and connection bolts, and confirm there is no looseness.
2. Trailer Disconnection: Drive the tractor and trailer to a flat, solid and open area, shift to neutral gear, and firmly pull the parking brake of the tractor and trailer; disconnect the trailer's air circuit and circuit connectors, and place the connectors in a clean and dry place to avoid pollution; lift the tractor's suspension to separate the traction saddle from the trailer's traction pin; slowly drive the tractor forward to separate it from the trailer, and park the tractor and trailer in a safe area respectively; place wheel blocks under the trailer's wheels to prevent slipping.

 Post-Operation Maintenance

1. Clean the dust on the cab, chassis and traction saddle to prevent dust accumulation from affecting the service life of the vehicle; clean the air filter regularly to ensure engine intake smoothness, especially in dusty areas; clean the 4-directional camera lens to ensure clear vision.
2. Check the levels of all oils and liquids again, replenish fuel, engine oil, coolant and brake fluid in time; check for oil leakage, air leakage and loose bolts (focus on chassis, powertrain and traction system), and tighten or repair them immediately if any problems are found; when inflating the tires, do not stand in front of the tires to avoid injury from explosion.
3. Park the vehicle in a dry, ventilated and flat area, turn off the engine, pull the parking brake tightly, and put the gear in neutral. If the vehicle is parked for a long time, cover the cab and traction saddle to avoid dust and corrosion; take the key, turn off the main power switch and close the doors and windows; disconnect the power supply of the trailer if it is not connected.
4. Carry out regular maintenance according to the vehicle manual: replace engine oil, filter elements (air filter, oil filter, fuel filter) and gear oil regularly, check the wear condition of tires, brake pads and transmission parts, and conduct comprehensive inspection and maintenance of the powertrain, traction system and brake system to ensure the long-term stable and efficient operation of the vehicle; when maintaining the vehicle, support the lifted parts firmly to avoid accidents.