Title: An In-depth Guide to HOWO Under Chassis Parts: Key Components, Maintenance, and Upgrades

Introduction

The HOWO under chassis parts, produced by the China National Heavy Duty Truck Group (CNHTC), is renowned for its ruggedness and high performance, making it a top choice for industries like construction, mining, and logistics. One critical element that determines a HOWO truck’s reliability and longevity is its under chassis. The under chassis of a HOWO truck comprises various parts that work in unison to provide stability, durability, and control during challenging driving conditions. In this article, we’ll dive into the primary under chassis parts, their roles, the significance of regular maintenance, and potential upgrades to boost performance.

Section 1: What Is the Under Chassis of a HOWO Truck?

The under chassis of a HOWO truck refers to the structural framework and system of parts that support the vehicle’s body, cabin, and engine. This framework includes suspension, axles, steering systems, and braking mechanisms, all working together to ensure the truck can handle heavy loads, rough terrains, and long-distance journeys with ease. Since these parts endure constant pressure, proper maintenance and understanding of these components are essential.

Section 2: Key HOWO Under Chassis Parts and Their Functions

1. Suspension System

The suspension system is a primary under chassis component that connects the truck to its wheels while allowing for motion between the two. For HOWO trucks, the suspension often includes:

Leaf Springs: These distribute the vehicle’s weight and provide shock absorption, essential for balancing heavy loads.

Shock Absorbers: They absorb and dampen shock from uneven terrain, ensuring a smooth ride and reducing stress on other chassis parts.

Stabilizer Bars: Prevents excessive body roll during turns, offering stability and maintaining control.

2. Axles

Axles are key components for load-bearing and transmitting driving power to the wheels. HOWO trucks usually have a front axle and rear axles, with each axle featuring a differential that allows wheels on the same axle to rotate at different speeds. This is crucial when the truck is maneuvering tight turns, as it helps prevent wheel drag.

3. Braking System

Safety is paramount, and the braking system plays a crucial role in HOWO truck performance. Essential components include:

Brake Pads and Discs: These are the parts that directly interact to create friction, slowing the truck down when the brakes are applied.

Brake Drums: In drum brakes, the drum rotates with the wheel and the brake shoes press against it, creating the necessary friction.

Air Compressor and Brake Valves: HOWO trucks often use air brake systems where compressed air applies the brakes, providing consistent braking power for heavy loads.

4. Steering System

A robust steering system in HOWO trucks enables smooth navigation and quick response. Key components are:

Steering Gear: Converts the driver’s rotational input into the movement of the wheels.

Steering Column: Transfers the steering wheel movement to the gear.

Power Steering Pump: Reduces the effort needed to steer, enhancing the truck’s maneuverability.

5. Frame and Cross Members

The frame is the backbone of the under chassis. It provides structural integrity and support for other under chassis parts, allowing them to function effectively. Cross members are integrated to increase rigidity and prevent twisting under heavy loads.

6. Driveline Components

HOWO trucks often employ components like the drive shaft and universal joints, which transmit power from the engine to the wheels. These parts must be in top condition to ensure efficient power transfer, especially under load-bearing conditions.

Section 3: Importance of Maintenance for HOWO Under Chassis Parts

Given the rigorous conditions HOWO trucks operate in, regular maintenance of under chassis parts is essential. Here’s why it matters:

Enhanced Safety: Properly maintained under chassis parts, especially the braking and steering systems, significantly enhance vehicle safety by ensuring responsive handling and reliable stopping power.

Increased Longevity: Routine maintenance prevents excessive wear and tear, reducing the frequency of part replacements and keeping repair costs manageable.

Optimized Performance: Keeping components like the suspension and axles in optimal condition helps maintain a smooth ride, reducing driver fatigue and enabling efficient transportation of goods.

Recommended Maintenance Intervals

For HOWO trucks, it’s advisable to have a full under chassis inspection every 20,000 to 40,000 kilometers or more frequently under heavy-duty usage. Specific parts like brake pads, suspension components, and axles might require closer attention, especially if the truck is regularly used in off-road or demanding environments.

Section 4: Common Issues with HOWO Under Chassis Parts and How to Address Them

1. Worn-Out Suspension Components

Signs of worn suspension include increased vibration and reduced ride quality. Replacing worn-out leaf springs and shock absorbers can restore balance and shock absorption.

2. Steering Issues

Steering components may loosen or wear out over time, leading to difficulty in maneuvering or “play” in the steering wheel. This is often due to worn-out steering gear or tie rods and can be fixed by replacing these parts.

3. Brake Wear

Brake components like pads and discs wear down over time, reducing braking efficiency. Routine checks on brake wear are essential for safety, especially for a truck that carries heavy loads. Replacing brake pads regularly and ensuring adequate brake fluid levels can enhance braking response.

Section 5: Upgrading HOWO Under Chassis Parts for Better Performance

1. Heavy-Duty Suspension

For drivers who frequently traverse rough terrain or carry substantial loads, upgrading to heavy-duty suspension components such as reinforced shock absorbers and higher-rated leaf springs can enhance load-bearing capability and ride stability.

2. Advanced Braking Systems

Upgrading to high-performance brake pads and discs can provide better stopping power, particularly valuable for trucks that often operate in urban or mountainous areas with frequent stopping and starting.

3. Reinforced Axles and Differentials

HOWO trucks that haul exceptionally heavy loads may benefit from reinforced axles and differentials, designed to handle higher torque and stress, ensuring longevity and preventing failures during heavy-duty operations.

4. Power Steering Enhancements

Installing a more robust power steering pump or upgrading the steering system with modern components can enhance steering responsiveness, making it easier to navigate in tight spaces or on challenging terrain.

Section 6: Choosing Quality HOWO Under Chassis Parts and Suppliers

When replacing or upgrading HOWO under chassis parts, it’s crucial to source components from reputable suppliers who specialize in HOWO trucks. Look for:

Original Equipment Manufacturer (OEM) parts for guaranteed fit and performance.

Certified aftermarket suppliers who provide parts that meet or exceed HOWO’s quality standards.

Avoid parts from unknown or unverified suppliers, as they may not withstand the rigors of heavy-duty use, leading to more frequent breakdowns or replacements.

Conclusion

The under chassis parts of a HOWO truck are fundamental to its performance, safety, and durability. From the suspension system to axles, brakes, and steering, each component plays a vital role in ensuring the truck can handle challenging conditions and heavy loads. Regular maintenance, timely replacements, and selective upgrades can enhance both the reliability and longevity of HOWO under chassis parts, allowing these trucks to deliver peak performance in even the most demanding environments. By understanding each component’s role and implementing a proactive approach to maintenance, truck operators can ensure their HOWO trucks remain dependable workhorses for years to come.