Sitrak 6×4 Tractor

Sitrak 6×4 Tractor - Introduction, Detailed Specifications & Operation Guide

Basic Parameters

• Brand & Model: Sinotruk Sitrak 6×4 Heavy-Duty Tractor (optional configurations for different power levels, cab types and transportation scenarios)
• Drive Type: 6×4 (fixed drive configuration), 2 front steering axles and 2 rear driving axles (4 driving wheels), suitable for heavy-load (40–60 tons) long-distance, mountain road and complex road transportation
• Wheelbase: 3200mm / 3600mm / 3800mm / 4200mm / 4500mm (optional configurations, adjustable according to traction needs and trailer matching, adapting to different trailer lengths and transportation scenarios)
• Overall Dimensions (L×W×H): 6750–7900mm × 2550mm × 3850–4150mm (varies with cab type, high-top or standard cab, and additional configurations)
• Curb Weight: 8.8–9.6 tons (lightweight optimized design, adopting high-strength steel and aluminum alloy materials, reducing weight while ensuring load-bearing capacity and structural strength, meeting national and international load limit standards)
• Gross Combination Weight (GCW): 50–65 tons (in line with global heavy-duty vehicle operation standards, customizable according to export regional load requirements and local transportation regulations)
• Emission Standard: Euro 4 / Euro 5 / Euro 6 (China National IV / V / VI), optional configurations meeting local emission standards for specific export regions, adapting to global environmental protection policies
• Tire Specification: 12R22.5 / 295/80R22.5 (6 tires in total), optional low-rolling resistance energy-saving tires, all-weather off-road tires and anti-skid tires, adapting to different road conditions such as highways, mountain roads, muddy roads and snow roads

Powertrain System

• Engine: Optional Sinotruk MAN MC series (MC11 / MC13) high-efficiency diesel engine; optional Weichai WP series engine for specific markets and heavy-load scenarios
• Displacement: 10.5L (MC11) / 12.4L (MC13) / 15L (Weichai WP15), meeting different power demand scenarios
• Max Power: 440–660 HP (324–485 kW), optional 460HP / 500HP / 540HP / 610HP / 660HP, the high-power version is suitable for heavy-load mountain road transportation, with strong climbing ability and rapid power response
• Peak Torque: 2100–2700 N·m, with maximum torque speed of 900–1400 rpm (wider economic speed range), ensuring excellent low-speed torque and climbing performance, easily adapting to heavy-load starting, long uphill sections and complex road conditions
• Features: Inline 6-cylinder, turbocharged & intercooled, direct injection, electronic control high-pressure common rail technology, with strong low-speed torque, fast heat dissipation and excellent fuel economy; the fuel consumption per 100 kilometers is 29–35L (varies with power version and transportation scenario), which is 5–8% lower than that of similar models; the B10 service life is as high as 1.5–1.8 million kilometers, with a long maintenance cycle (engine maintenance cycle up to 120,000 kilometers), suitable for long-distance high-intensity continuous operation
• Transmission: Standard 12-speed / 16-speed AMT automatic gearbox (Sinotruk self-developed or ZF imported), optional 12-speed manual gearbox according to user operating habits; perfectly matched with the engine to form an efficient and stable power chain

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: 180–220 kN, meeting the traction needs of different types of trailers (container trailers, bulk cargo trailers, cold chain trailers, hazardous chemical 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 and complex road driving; equipped with a reliable locking device, preventing the trailer from disconnecting during operation
• Fuel Supply System: Equipped with a 1000L / 1100L large-capacity aluminum fuel tank as standard, corrosion-resistant and lightweight, realizing a long endurance of 3000–3500 kilometers, avoiding frequent refueling during long-distance transportation; 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 (especially suitable for overseas markets with uneven fuel quality)
• Additional Configuration: Optional fuel tank heating function, suitable for low-temperature areas (such as high-altitude and cold regions), preventing fuel from freezing and ensuring normal operation in cold weather; equipped with a fuel level sensor, real-time monitoring fuel level and reminding refueling in time

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; optional high-top double sleeper cab and standard cab, with flat floor design, improving interior space comfort and accessibility, suitable for long-distance drivers to rest
• Interior: Spacious and comfortable, adopting advanced sound insulation, heat insulation materials and multiple shock absorption and noise reduction processes, NVH noise reduction as low as 52–53dB, effectively isolating noise and vibration during driving; equipped with multi-adjustable airbag shock-absorbing driver seat with ventilation and heating functions, 820–850mm wide sleeper bed, multi-functional LCD instrument panel, 10.25–12.3-inch intelligent central control screen, automatic constant temperature air conditioning, high-fidelity audio and multi-layer storage space, creating a "mobile home" for drivers and effectively reducing driving fatigue during long hauls
• Additional Configuration: Optional electric cab lifting, intelligent terminal, 360 panoramic camera (with blind spot monitoring 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 various function switches within easy reach, improving operation convenience; equipped with keyless entry and one-button start function (optional), enhancing driving comfort and convenience
• Safety Configuration: Comprehensive safety protection, focusing on solving the safety problems of heavy-load, long-distance and complex road driving, 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 6×4 tractors, especially suitable for heavy-load and complex road transportation:

1. Exterior & Chassis: Check the tire pressure and wear condition of all 6 tires, ensure wheel nuts are fastened (pay special attention to rear driving wheels); 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; check the integrity of the differential lock and its pipeline, and ensure it can work normally on slippery roads.
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; check the hydraulic oil level of the cab suspension system.
3. Cab & Electrical System: Test the vehicle lights, horn, wiper, automatic headlight and automatic rain wiper 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 360 panoramic camera and blind spot monitoring function to ensure good driving vision (especially important for complex road and heavy-load driving); check the traction saddle locking device to ensure it is locked reliably; test the one-button start function if equipped.

 Vehicle Starting & Daily Driving

1. Enter the cab, turn the key to the "ON" position (or press the one-button start switch), wait for the vehicle self-inspection to complete (no fault alarm), then start the engine. For the AMT 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, which is more important in areas with poor vision such as mountain roads.
4. Maintain a stable speed during driving: the maximum speed on highways shall not exceed 90km/h, and the speed on ordinary roads and mountain roads shall be controlled within 60km/h. For long downhill sections, use low gears and engine brake (or optional hydraulic retarder) 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; use the cruise control function appropriately on flat roads to reduce driving fatigue.
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 (especially important for 6×4 heavy-load tractors). 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; use the hill-start assist function when starting on slopes to prevent slipping.
6. During long-distance driving, pay attention to the fuel level and instrument prompts, and refuel in advance when the fuel is low; pay attention to the prompts of the intelligent fault diagnosis system, and deal with abnormal conditions in time; check the trailer connection status regularly during driving to ensure safe traction; for heavy-load driving, avoid overloading to prevent damage to the powertrain and axles.

 Trailer Connection & Disconnection Operation

• 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; use the 360 panoramic camera to check the surrounding environment to avoid blind spots, especially in narrow areas.
• 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, which is more important on slopes.

 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 360 panoramic camera lens and sensor to ensure clear vision and normal function; clean the residual dirt on the trailer connection part.
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; check the wear condition of the brake pads and tires (heavy-load and complex road driving requires more frequent inspection).
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; turn off the main power switch and close the doors and windows; disconnect the power supply of the trailer if it is not connected; retract the cab suspension to the appropriate position.
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 according to the maintenance cycle (engine 120,000 kilometers, transmission and drive axle 240,000 kilometers); 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 6×4 tractor; when maintaining the vehicle, support the lifted parts firmly to avoid accidents.