Jiefang 8×4 Dump Truck

Jiefang 8×4 Dump Truck - Introduction, Detailed Specifications & Operation Guide

Basic Parameters

• Brand & Model: Jiefang 8×4 Heavy-Duty Dump Truck (J6P / J7 Series, optional configurations)
• Drive Type: 8×4 (2 front steering axles + 2 rear driving axles, 12 wheels in total)
• Wheelbase: 1800+3300+1400mm / 1800+3800+1400mm / 1800+4000+1350mm (optional configurations, adjustable according to cargo box length)
• Overall Dimensions (L×W×H): 9500–10900mm × 2550mm × 3400–3950mm
• Curb Weight: 15.2–16.6 tons (lightweight optimized design, ensuring better load capacity under national standard limits)
• Gross Vehicle Weight (GVW): 31–49 tons (in line with national heavy-duty vehicle standards, customizable according to export requirements)
• Rated Payload: 18–32 tons (suitable for large-scale heavy-load transportation of bulk materials such as ore, gravel and coal)
• Emission Standard: Euro 4 / Euro 5 / Euro 6 (China National IV / V / VI), optional Euro 3 configuration for specific export regions
• Tire Specification: 11.00R20 / 12R22.5 / 295/80R22.5 (12 tires in total), optional low-rolling resistance energy-saving tires and off-road tires for complex working conditions in mining areas

Powertrain System

• Engine: Optional Jiefang CA6DL2 / CA6DM2 / CA6DN1 series diesel engine or Weichai WP10.5H / WP12 series diesel engine; optional LNG clean energy type for environmental protection needs
• Displacement: 10.5L (CA6DL2 / WP10.5H) / 11.0L (CA6DM2) / 12.5L (CA6DN1) / 11.596L (WP12)
• Max Power: 380–550 HP (280–405 kW), optional 420HP / 460HP / 500HP according to working condition requirements; Jiefang CA6DM2 engine has strong explosive power and stable performance, suitable for heavy-load climbing
• Peak Torque: 1800–2600 N·m (Jiefang series); 2110–2500 N·m (Weichai series), with maximum torque speed of 1000–1700 rpm, ensuring excellent climbing performance and low-speed torque, easily adapting to steep slope working conditions in mountainous areas and mining areas
• Features: Inline 6-cylinder, turbocharged & intercooled, direct injection, WEVB exhaust valve brake (improving braking effect by 40%-50%), electronic control high-pressure common rail technology, strong low-speed torque, fast heat dissipation, excellent fuel economy and long maintenance cycle (up to 60,000 kilometers), suitable for heavy-load climbing and long-distance transportation
• Transmission: 12-speed / 16-speed AMT automatic gearbox (Jiefang ZF 12TX2420TD / 16TX2621TD optional) or FAST 12-speed / 16-speed manual gearbox (optional), perfectly matched with the engine to ensure power transmission efficiency
• Gears: 12 / 16 forward gears + 2 reverse gears

Cargo Box & Hydraulic Lifting System

• Cargo Box: Rear-tipping type, made of high-strength wear-resistant steel (Q355B), anti-deformation and anti-corrosion, with optimized design for heavy-load transportation
• Standard Size: 6.5m–8.2m (length) × 2.35m (width) × 1.5m–1.8m (height), optional 7.6m length for specific demand in mining and construction areas
• Plate Thickness: Floor 8–10mm, side plate 6–8mm; frame size 850×300(8+5)mm or 900×300(10+6)mm, reinforced structure (reinforced beam at the bottom and side) to prevent deformation and cracking, suitable for heavy-load transportation of ore, gravel, coal and other materials
• Design: U-shaped or rectangular integral stamping, wear-resistant, not easy to stick materials, large loading volume (25–35 cubic meters), suitable for transporting sand, gravel, soil, ore, coal and other bulk materials, especially suitable for large-scale mining, quarrying and long-distance heavy-load transportation scenarios
• Hydraulic System: Front-mounted multi-stage telescopic high-pressure oil cylinder, imported (Bosch) or domestic well-known brand hydraulic components, with stable performance and high reliability
• Maximum Lifting Angle: 48–50°
• Lifting Time: ≤18s, Lowering Time: ≤15s
• Features: Stable lifting and lowering, no jitter, strong pressure-bearing capacity, not easy to leak oil, equipped with high-performance power take-off (PTO) as standard, suitable for frequent dumping operations, improving transportation efficiency; the hydraulic system is equipped with pressure protection device and overload protection device to ensure operation safety, effectively avoiding accidents caused by overload lifting

Cabin & Safety Configuration

• Cabin: Integral all-steel collision-proof structure, ECE-R29 collision safety certification, 4-point full hydraulic suspension; high-top cab frame with flat floor design, improving interior space comfort and accessibility; the cab adopts 1MM thick high-strength steel plate, forming a safe life protection cabin for drivers
• Interior: Spacious and comfortable, equipped with multi-adjustable airbag shock-absorbing driver seat with foldable lumbar support, wide sleeper bed (suitable for long-distance driving), 4-spoke multifunctional steering wheel (with multi-function adjustment buttons), electric windows, automatic constant temperature air conditioning, high-fidelity audio and multiple storage compartments (including three-section split storage grid on the top), effectively reducing driving fatigue during long hauls
• Additional Configuration: Optional electric cab lifting, oil-bath air filter (suitable for dusty working conditions in mining areas), intelligent terminal, 4-directional camera for better driving vision (for export models), intelligent fault diagnosis system (real-time monitoring of vehicle status), manual sunroof and optional parking air conditioning, 3-layer foot pedal design (reducing dirt entering the cab); imported hanging brake and clutch pedals, reducing pedal force by 80N (20%) for easier braking
• Fuel Tank: 400–600L aluminum fuel tank, corrosion-resistant and lightweight; optional 600+400L large-capacity configuration to meet long-distance transportation needs without frequent refueling
• Safety Configuration: Comprehensive safety protection, ensuring driving safety under heavy load and 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 engineering vehicles:

1. Exterior & Chassis: Check the tire pressure and wear condition of 12 tires, ensure wheel nuts are fastened; inspect the cargo box for cracks, deformation or residual materials (especially coal, ore and other corrosive materials); check the hydraulic cylinder and pipeline for oil leakage; confirm all chassis bolts are tight and the ground clearance is normal; remove obstacles on the driving path to avoid tire damage, especially in mining and mountainous areas.
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 hydraulic oil level and pipeline tightness (critical for heavy-load lifting); 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 and suspension system for normal operation; confirm the parking brake is in effective braking state (more critical for 8×4 heavy-load models); open and fix the rear tailgate of the cargo box if necessary; adjust the rearview mirror to ensure good driving vision, especially when driving in narrow construction sites.

Vehicle Starting & Daily Driving

• 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 AMT version, ensure the gear is in neutral before starting; start the engine in a well-ventilated area, and guide the exhaust to the outdoor if starting indoors (to avoid exhaust pollution in closed spaces such as mines).
• 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.
• Release the parking brake, fully depress the clutch (for manual transmission), shift to the first gear, slowly release the clutch and step on the accelerator gently to start smoothly, avoiding violent acceleration and harsh gear shifting, especially when fully loaded (18–32 tons) to prevent drive shaft or tire slipping. For the AMT version, simply step on the accelerator to start after releasing the parking brake; honk the horn before starting to warn surrounding personnel (critical in construction sites and mines).
• Maintain a stable speed during driving:When driving the Jiefang 8×4 Dump Truck on highways, the maximum speed must not exceed 80 km/h. On construction sites and mining roads with poor road conditions, the speed should be controlled between 30 and 40 km/h. When driving on long downhill sections (especially mountain roads), a low gear should be used in conjunction with engine braking (such as WEVB exhaust valve braking) to avoid frequent use of the service brakes, which could lead to brake failure. When the vehicle is traveling at high speed, it is strictly forbidden to change the direction of travel or shift gears.
• When driving on muddy, snowy or slippery roads (common in mining and construction areas), turn on the differential lock to improve wheel grip and passability; avoid sharp turns at high speed to prevent rollover (more important for 8×4 heavy-load models). For steep slopes, use low gears to ensure sufficient power and avoid slipping; avoid driving horizontally on steep slopes to prevent the vehicle from tipping.

Standard Dumping Operation

1. Positioning & Parking: Drive the truck to a flat, solid and open area (ensure the ground can bear the heavy load of the vehicle), keep the vehicle body horizontal, shift to neutral gear, and firmly pull the parking brake; for ramp parking, use wheel blocks to prevent slipping; do not park in areas with open flames or high temperatures to avoid tire explosion, and keep away from overhead power lines.
2. PTO Engagement: Keep the engine running, fully depress the clutch (for manual transmission), and engage the power take-off (PTO) to make the hydraulic system enter the working state; confirm the PTO is engaged normally before proceeding to the next step; do not engage PTO when the vehicle is moving, to avoid damaging the hydraulic system.
3. Lifting & Dumping: Slowly release the clutch (for manual transmission), push the hydraulic control lever upward to lift the cargo box evenly to the standard dumping angle (48–50°). During the whole process, ensure there are no personnel, obstacles or overhead obstacles (minimum clearance ≥6m) around the cargo box to avoid accidents; avoid violent dumping to prevent material splashing and vehicle instability (critical for heavy-load models); do not stand under the lifted cargo box, and set up warning signs if necessary.
4. Reset Operation: After the materials are completely unloaded, pull the hydraulic control lever down to lower the cargo box slowly until it is fully seated; fully depress the clutch (for manual transmission) to disengage the PTO, reset the control lever to the neutral position, and close the rear tailgate of the cargo box if necessary; ensure the cargo box is fully reset before driving, to avoid damage to the cargo box and chassis during driving.

Post-Operation Maintenance

1. Clean the residual materials (especially corrosive materials such as coal and ore) inside the cargo box and the dust on the chassis to prevent corrosion and material accumulation, which may affect the service life of the vehicle; clean the air filter regularly to ensure engine intake smoothness, especially in dusty mining areas.
2. Check the levels of all oils and liquids again, replenish fuel, engine oil, coolant and hydraulic oil in time; check for oil leakage, air leakage and loose bolts (focus on chassis and hydraulic 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, retract all hydraulic cylinders and cover the exposed parts of the cylinder piston rods; take the key, turn off the main power switch and close the doors and windows; for vehicles used in mining areas, clean the chassis and cargo box thoroughly to remove dust and corrosive residues.
4. Carry out regular maintenance according to the vehicle manual: replace engine oil, filter elements (air filter, oil filter, fuel filter) and hydraulic oil regularly, check the wear condition of tires, brake pads and transmission parts (especially brake pads for long downhill), and conduct comprehensive inspection and maintenance of the powertrain and hydraulic 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.