Hey there! As a supplier of lowboy semi trailers, I've seen my fair share of hydraulic problems over the years. Lowboy semi trailers are super useful for hauling heavy equipment and machinery, but their hydraulic systems can sometimes act up. In this blog, I'll talk about some common hydraulic problems you might encounter with these trailers.
1. Hydraulic Fluid Leaks
One of the most common issues is hydraulic fluid leaks. These leaks can happen for a bunch of reasons. First off, the hoses might be old or damaged. Over time, the constant movement and pressure can wear down the hoses, causing small cracks or holes. You might notice a puddle of hydraulic fluid under the trailer or see some wet spots on the hoses themselves.
Another cause could be loose connections. The fittings that connect the hoses to the hydraulic components might not be tightened properly. This can lead to fluid seeping out. And seals can also be a culprit. The seals in the hydraulic cylinders and valves are supposed to keep the fluid in place. But if they get worn out or damaged, fluid can leak.
A fluid leak is a big deal because it reduces the amount of fluid in the system. Without enough fluid, the hydraulic system won't work as efficiently. It can also contaminate the environment and make a mess. To fix this, you need to find the source of the leak. Check the hoses for any visible damage. If a hose is bad, replace it. Tighten any loose connections, and if a seal is the problem, swap it out.
2. Low Hydraulic Pressure
Low hydraulic pressure is another headache. There are a few things that can cause this. One is a clogged filter. The hydraulic filter is there to remove dirt and debris from the fluid. But if it gets clogged, it restricts the flow of fluid, which in turn lowers the pressure.
The hydraulic pump could also be the issue. The pump is responsible for creating the pressure in the system. If it's not working properly, maybe because of worn-out parts or a lack of proper lubrication, the pressure will drop.
Low fluid levels can also lead to low pressure. As I mentioned earlier, fluid leaks can reduce the amount of fluid in the system. And if there's not enough fluid, the pump can't create the necessary pressure.
When you have low pressure, the trailer's hydraulic functions like raising and lowering the deck might be slow or not work at all. To solve this, start by checking the filter. If it's clogged, replace it. Inspect the pump for any signs of damage or wear. And of course, make sure the fluid level is where it should be. Add more fluid if needed.
3. Contaminated Hydraulic Fluid
Contaminated fluid is a problem that can cause a whole bunch of other issues. There are different ways the fluid can get contaminated. Dirt and dust can find their way into the system through open ports or damaged seals. Water can also get in, especially if the trailer is used in wet conditions or if there's a leak in the system that allows water to seep in.
Contaminated fluid can damage the hydraulic components. The dirt and debris can cause abrasion, wearing down the moving parts in the cylinders, valves, and pump. Water can cause corrosion, which weakens the metal parts.
To deal with this, you need to change the fluid regularly. Use a high - quality hydraulic fluid that's recommended for your trailer. You can also install a water separator if water contamination is a common problem. And keep the system clean by making sure the ports are covered when the trailer is not in use.
4. Erratic Hydraulic Movements
Sometimes, the hydraulic system might act erratically. The trailer's deck might raise or lower unevenly, or it might make sudden jerks during operation. This can be really dangerous, especially when you're trying to load or unload heavy equipment.
Air in the hydraulic system is a common cause of erratic movements. When air gets into the lines, it compresses differently than the hydraulic fluid. This can cause the system to behave unpredictably. Another reason could be a malfunctioning valve. The valves are responsible for controlling the flow of fluid in the system. If a valve is stuck or not working properly, it can lead to uneven movements.
To fix this, you need to bleed the air out of the system. This involves opening the bleed valves at the highest points in the hydraulic lines to let the air escape. If a valve is the problem, you might need to clean or replace it.
5. Overheating of the Hydraulic System
Overheating is a serious problem that can damage the hydraulic components. There are a few reasons why the system might overheat. One is excessive use. If you're constantly using the hydraulic system for long periods without giving it a break, it can generate a lot of heat.
A lack of proper cooling can also be an issue. The hydraulic system usually has a cooler to dissipate heat. If the cooler is blocked by dirt or debris, it won't work effectively, and the system will overheat.
Another cause could be the wrong type of hydraulic fluid. Using a fluid with the wrong viscosity can cause the system to work harder, generating more heat.
Overheating can cause the fluid to break down, which reduces its lubricating properties. It can also damage the seals and other components. To prevent overheating, make sure you give the system breaks during long - term use. Clean the cooler regularly to ensure proper airflow. And use the correct type of hydraulic fluid.
As a lowboy semi trailer supplier, I know how important it is to keep these hydraulic systems in good shape. If you're in the market for a new lowboy semi trailer, we've got some great options. Check out our 3Axle 40 ft flatbed trailer, 80tons lowbed semi trailer, and 3Axle 40 ton gooseneck trailer.
If you're facing any of these hydraulic problems or have questions about our trailers, don't hesitate to reach out. We're here to help you keep your trailer running smoothly and can assist you with any purchasing needs.
References
- "Hydraulic Systems Handbook" - A comprehensive guide on hydraulic systems and their maintenance.
- Industry reports on lowboy semi trailer hydraulic system failures and solutions.
