Kallur Howo ZZ3257

# SINOTRUK HOWO ZZ3257 371HP 6×4 Dump Truck Specifications


## 1. Basic Chassis Information
- Chassis Model: ZZ3257N3847W
- Drive Form: 6×4 (3 axles, rear 2 axles driving)
- Driving Position: Left-hand drive (RHD optional)
- Gross Vehicle Weight (GVW): 25,000 kg
- Curb Weight: 12,220 kg
- Rated Loading Capacity: 12,780 kg
- Max Travel Speed: 75 km/h
- Approach Angle / Departure Angle: 19° / 27°
- Wheelbase: 3,800 + 1,350 mm

## 2. Cabin Configuration
- Cabin Type: HOWO HW76 Extended Cab
- Layout: 2 seats + single sleeper bed
- Suspension: 4-point full floating suspension with shock absorbers
- Standard Equipment: Air conditioner, adjustable hydraulic damping driver seat, heater & ventilator, external sun visor, adjustable steering wheel, safety belts, air horn, 3-speed double-arm wipers, laminated windshield, radio, central lock
- Tiltable: Hydraulically tiltable forward at 55°

## 3. Engine System
- Engine Brand: SINOTRUK
- Model: WD615.47
- Type: In-line 6-cylinder, water-cooled, 4-stroke direct injection diesel, turbocharged & intercooled
- Displacement: 9.726 L
- Rated Power: 371 HP / 247 kW @ 2,200 rpm
- Max Torque: 1,500 N·m @ 1,100–1,600 rpm
- Emission Standard: Euro II
- Fuel Tank Capacity: 300 L (aluminum alloy tank with lockable cap)

## 4. Transmission & Clutch
- Gearbox Model: HW19710 Manual Transmission
- Gears: 10 forward gears + 2 reverse gears, with PTO output
- Gear Ratios:
Forward: 14.28, 10.62, 7.87, 5.88, 4.38, 3.27, 2.43, 1.80, 1.34, 1.00
Reverse: 13.91 (R1), 3.18 (R2)
- Clutch: Φ430 mm diaphragm single dry plate clutch, hydraulic operation with air booster

## 5. Axles & Suspension
- Front Steering Axle: HF9, Rated Load 9,000 kg
- Rear Driving Axles: HC16 double reduction hub axle, single-stage central reduction + wheel hub reduction
- Rear Axle Rated Load: 2×16,000 kg
- Final Drive Ratio: 5.92
- Differential Lock: Inter-wheel & inter-axle differential lock standard
- Front Suspension: Multi-leaf spring with shock absorber
- Rear Suspension: Heavy-duty balanced leaf spring suspension

## 6. Steering & Brake System
- Steering Gear: ZF8098 hydraulic power steering
- Service Brake: Dual-circuit full air drum brake
- Parking Brake: Spring energy brake acting on rear wheels
- Auxiliary Brake: Engine exhaust brake

## 7. Tires & Wheels
- Tire Spec: 12.00R20 radial heavy-duty tire
- Tire Quantity: 10 main tires + 1 spare tire
- Steel Wheel Rim: 8.5-20

## 8. Dump Cargo Body (Standard)
- Inner Dimension (L×W×H): 5,600 × 2,300 × 1,400 mm
- Volume: 18 CBM
- Plate Thickness: Floor 8 mm, Side & Rear Gate 6 mm
- Lifting Type: Under-body hydraulic front tipping cylinder
- Hydraulic Pump: Gear pump driven by gearbox PTO

## 9. Overall Dimensions
- Overall Length: 8,545 mm
- Overall Width: 2,490 mm
- Overall Height: 3,200 mm

## 10. Main Advantages
1. Mature WD615.47 371HP engine, strong torque for mining & construction
2. HC16 heavy load rear axle with double differential lock, excellent off-road performance
3. 10-speed heavy-duty gearbox with PTO, stable tipping operation
4. Floating comfort cabin with air conditioning for long-hour operation
5. High-strength wear-resistant tipper body, suitable for sand, stone, ore transportation
6. Dual-circuit air brake system with exhaust brake for safe downhill driving