Hey there! I'm a supplier of used HOWO dump trucks, and today I'm gonna dive deep into the hydraulic system of these beasts. If you're in the market for a reliable workhorse, understanding the hydraulic system is crucial. So, let's get started!
What is a Hydraulic System?
First things first, what exactly is a hydraulic system? Well, in simple terms, it's a system that uses fluid pressure to transfer power. In a used HOWO dump truck, the hydraulic system is responsible for lifting the dump body to unload its cargo. It's like the muscle of the truck, allowing it to handle heavy loads with ease.
The basic components of a hydraulic system in a HOWO dump truck include a hydraulic pump, hydraulic cylinders, a control valve, and hydraulic fluid. The hydraulic pump is the heart of the system, as it creates the pressure needed to move the fluid. The hydraulic cylinders are the actuators that convert the fluid pressure into mechanical force, which is used to lift the dump body. The control valve regulates the flow of the hydraulic fluid, allowing the operator to control the lifting and lowering of the dump body. And of course, the hydraulic fluid is the medium that transfers the power throughout the system.
How Does the Hydraulic System Work in a Used HOWO Dump Truck?
Now that we know the basic components, let's take a closer look at how the hydraulic system works in a used HOWO dump truck. When the operator activates the control valve, the hydraulic pump starts to draw in hydraulic fluid from the reservoir. The pump then pressurizes the fluid and sends it through the hydraulic lines to the hydraulic cylinders.
As the pressurized fluid enters the hydraulic cylinders, it pushes the pistons inside the cylinders. This causes the pistons to extend, which in turn lifts the dump body. The operator can control the speed and direction of the lifting by adjusting the control valve. When the dump body reaches the desired height, the operator can stop the flow of the hydraulic fluid by closing the control valve.
To lower the dump body, the operator simply reverses the process. The control valve is adjusted to allow the hydraulic fluid to flow back to the reservoir, which causes the pistons in the hydraulic cylinders to retract. This lowers the dump body back to its original position.
Why is the Hydraulic System Important in a Used HOWO Dump Truck?
The hydraulic system is crucial in a used HOWO dump truck for several reasons. First and foremost, it allows the truck to handle heavy loads with ease. Without a reliable hydraulic system, the truck would not be able to lift and unload its cargo efficiently.
Secondly, the hydraulic system provides precise control over the lifting and lowering of the dump body. This allows the operator to unload the cargo in a controlled manner, which is important for safety and efficiency.
Finally, the hydraulic system is relatively simple and reliable. It has fewer moving parts compared to other types of lifting systems, which means there is less chance of mechanical failure. This makes the used HOWO dump truck a reliable and cost-effective choice for many businesses.
Types of Hydraulic Systems in Used HOWO Dump Trucks
There are several types of hydraulic systems that can be found in used HOWO dump trucks. The most common type is the single-acting hydraulic system. In a single-acting hydraulic system, the hydraulic fluid is only used to lift the dump body. The lowering of the dump body is done by gravity. This type of system is simple and cost-effective, but it has limited control over the lowering speed.
Another type of hydraulic system is the double-acting hydraulic system. In a double-acting hydraulic system, the hydraulic fluid is used to both lift and lower the dump body. This type of system provides more precise control over the lifting and lowering of the dump body, but it is more complex and expensive than the single-acting system.
Some used HOWO dump trucks may also be equipped with a telescopic hydraulic system. In a telescopic hydraulic system, the hydraulic cylinders are designed to extend and retract in a telescopic manner. This allows the dump body to be lifted to a greater height compared to a non-telescopic system. However, telescopic hydraulic systems are more complex and expensive than non-telescopic systems.
Maintenance and Troubleshooting of the Hydraulic System in a Used HOWO Dump Truck
Like any other mechanical system, the hydraulic system in a used HOWO dump truck requires regular maintenance to ensure its proper functioning. Here are some tips for maintaining the hydraulic system:
- Check the hydraulic fluid level regularly: The hydraulic fluid level should be checked at least once a week. If the fluid level is low, add the recommended type of hydraulic fluid to the reservoir.
- Inspect the hydraulic lines and connections: The hydraulic lines and connections should be inspected regularly for leaks. If a leak is detected, it should be repaired immediately to prevent further damage to the system.
- Change the hydraulic filter: The hydraulic filter should be changed at the recommended intervals to prevent contaminants from entering the system.
- Lubricate the moving parts: The moving parts of the hydraulic system, such as the pistons and cylinders, should be lubricated regularly to prevent wear and tear.
If you encounter any problems with the hydraulic system in your used HOWO dump truck, here are some common troubleshooting tips:


- Check the hydraulic fluid level: If the dump body is not lifting or lowering properly, the first thing you should check is the hydraulic fluid level. If the fluid level is low, add the recommended type of hydraulic fluid to the reservoir.
- Inspect the hydraulic lines and connections: If the hydraulic fluid level is normal, the next thing you should check is the hydraulic lines and connections for leaks. If a leak is detected, it should be repaired immediately.
- Check the control valve: If the hydraulic lines and connections are okay, the problem may be with the control valve. Check the control valve for any signs of damage or malfunction. If necessary, replace the control valve.
- Check the hydraulic pump: If the control valve is okay, the problem may be with the hydraulic pump. Check the hydraulic pump for any signs of damage or malfunction. If necessary, replace the hydraulic pump.
Conclusion
In conclusion, the hydraulic system is a crucial component of a used HOWO dump truck. It allows the truck to handle heavy loads with ease, provides precise control over the lifting and lowering of the dump body, and is relatively simple and reliable. By understanding how the hydraulic system works and following the proper maintenance procedures, you can ensure that your used HOWO dump truck will continue to perform at its best for many years to come.
If you're interested in purchasing a used HOWO dump truck, we have a wide selection of trucks available. You can check out our 6×4 Rear Dump Trailer, 8×4 Heavy Duty Truck, and Heavy Duty Truck HOWO T6G Dump Truck on our website. If you have any questions or would like to discuss your specific needs, feel free to contact us. We're here to help you find the perfect used HOWO dump truck for your business.
References
- "Hydraulic Systems: Basics and Applications." Hydraulics & Pneumatics, https://www.hydraulicspneumatics.com/.
- "How Does a Hydraulic System Work?" Engineering.com, https://www.engineering.com/.
- "Maintenance and Troubleshooting of Hydraulic Systems." Machinery Lubrication, https://www.machinerylubrication.com/.






