Used Truck

Overview

To ensure customers receive a used howo truck performing like a brand-new vehicle, each truck undergoes a rigorous and standardized six-step refurbishment and inspection process.

This comprehensive restoration process not only restores the truck's performance but also extends its lifespan, improves fuel efficiency, enhances safety, and ensures reliability under full load conditions. Below is the complete step-by-step restoration process used by our professional refurbishment plant.

Step 1: Used howo truck Engine Inspection and Repair

The engine is the core component of every used howo dump truck and used howo tractor truck. To ensure the engine delivers its full power and long-term durability, our maintenance team conducts a comprehensive inspection, including more than 20 individual tests. The main inspection steps include:

Turbocharger Inspection

Technicians inspect the turbocharger to check for:

Improved pressure stability

Rotor wear and shaft stability

Air leakage in high-pressure areas

Proper lubrication flow

Turbocharger malfunctions can severely reduce engine power, increase fuel consumption, and lead to excessive smoke emissions. Once any major defects are found, the turbocharger will be repaired or replaced.

Fuel Pump Adjustment

The fuel injection pump directly affects combustion efficiency and engine performance. Precise adjustments are required to:

Fuel injection timing

Pump pressure

Delivery volume

Synchronize with the injection system

Properly calibrating the pump parameters ensures efficient fuel utilization, improves power output, and reduces black smoke emissions.

Injector Calibration

Injectors are cleaned and calibrated to achieve:

Uniform fuel atomization

Ensuring balanced fuel distribution

Improved combustion performance

Reducing engine knock and misfires

If the spray pattern does not match factory specifications, new injectors can be installed.

Oil and Filter Change

Every used howo heavy-duty dump trucks is equipped with:

New engine oil,New oil filter,New fuel filter,New air filter

This ensures the engine receives proper lubrication and extends its lifespan from the moment it leaves the refurbishment center.

Step 2: Drivetrain and Axles – Restoring Power Transmission Stability

Used howo tractor truck rely on a robust and well-balanced drivetrain to efficiently transmit torque across all three axles. This second phase focuses on ensuring smooth power delivery and safe load-bearing capacity.

Transmission Testing

The transmission is opened and inspected to check for:

Gear wear

Synchronizer ring condition

Bearing clearance

Oil contamination

The transmission is tested under load to ensure smooth shifting, stable torque output, and minimal mechanical noise.

Differential Repair

The differential plays a crucial role in distributing power to both wheels. Repair procedures include:

Bevel gear clearance adjustment

Bearing lubrication

Ring gear and pinion alignment adjustment

Replacing worn plate differentials

If necessary, mining-grade differentials will receive additional reinforcement.

Drivetrain Balancing Adjustment

A balanced drivetrain ensures:

Reduced vibration

Reduce wear on transmission components

Improve fuel efficiency

Extended axle life

Technicians precisely adjust axle tilt angles, universal joints, and connecting components to ensure optimal smoothness of rotation.

Step 3: Used howo dump truck Hydraulic System Inspection – Ensuring Lifting Safety

The hydraulic lifting system determines the smoothness and safety of a used howo371 dump trucks when lifting and unloading heavy loads. Any malfunction in this system can lead to accidents, rollover problems, or damage to the truck bed.

Cylinder Leakage Test

Hydraulic cylinders will undergo:

Pressure leakage test

Sealing ring inspection

Surface smoothness measurement

Complete lifting cycle test

If internal leaks are found, the seals and piston rod will be replaced.

Piston Inspection

Technicians inspect the piston movement to confirm:

Smooth sliding

Correct positioning

No internal wear or damage

Stable pressure maintenance

A well-performing piston ensures stable cargo transport under maximum load conditions.

Hydraulic Pump Calibration

The hydraulic pump output is adjusted to:

Restore factory pressure levels

Increase lifting speed

Reduce system noise

Prevent overload

A precisely calibrated pump ensures reliable daily operation and minimizes hydraulic heat generation.

Step 4: Used howo semi-truck tractor Chassis and Suspension System – Enhancing Structural Strength

The chassis is the core component of a used howo tractor truck, while the suspension system determines the vehicle's driving stability and load-bearing capacity.

Frame Alignment

The straightness of the frame is measured using laser tools:

Identifying bends or deformations

Restoring factory-set geometry

Ensuring safe driving and standardized operating procedures

Any structural defects are repaired using precision hydraulic alignment tools.

Resistance Welding

High-pressure areas are reinforced through:

Resistance welding

Steel plate reinforcement

Rust-resistant coating application

This step is crucial for dump trucks frequently used in mining or field operations.

Leaf Spring Replacement

Inspection of leaf spring suspension includes:

Cracks

"Rust"

Fatigue deformation

Replacing worn spring blades ensures:

Smooth driving

Strong load-bearing capacity

Reduced impact stress on the chassis

Step 5: Electrical System Inspection – Ensuring Operational Reliability

A reliable electrical system ensures the used dump truck for sale operates safely day and night.

Dashboard Operation Restored

Technicians inspect:

Cluster indicators

Speed gauge

Oil pressure gauge

Water temperature gauge

Warning light system

Any faulty components are replaced.

Wiring Harness Repair Service

Electrical wiring is checked for:

Insulation damage

Loose connections

Corrosion

Short circuits

Critical wiring is replaced with heat-resistant and robust automotive cables.

Lighting and Safety Equipment

All exterior lights have been tested:

Headlights

Brake lights

Turn indicators

Reverse lights

Emergency warning lights

Safety equipment such as horns, sirens, and reflectors have been restored to optimal condition.

Step 6:Used howo truck Final Road Testing – Full-Load Simulation Test

The purpose of this final stage is to ensure the vehicle operates like a brand new vehicle after all repairs and adjustments are completed.

Brake Performance Testing

Brake system evaluation includes:

Air pressure testing

Brake pad inspection

Brake balance analysis

Emergency braking distance measurement

This ensures the used howo truck for sale meets international braking safety standards. Handling, Controlling, and Guiding

Technicians conduct tests on:

Steering sensitivity

Suspension elasticity

Body roll during cornering

Shifting behavior

The goal is to ensure a smooth and controllable driving experience.

Load Simulation Testing

Heavy loads are placed in the dump chute to simulate real-world working conditions.

Tests include:

Uphill driving

Downhill braking

Full hydraulic lifting

Long-distance driving stability

Only used howo truck price that pass the full load test are approved for delivery to customers.

Conclusion: A certified, fully refurbished, and operational truck is ready for work.

Through this professional 6-step refurbishment and inspection process, every used howo truck for sale becomes a reliable piece of equipment capable of handling complex construction, mining, and heavy transport tasks.

Customers will benefit from:

Performance in brand-new condition

Safe and stable lifting operations

Enhanced chassis durability

Reduced maintenance costs

Extended service life

This ensures maximum return on investment and long-term operational stability.