7 hours ago
The Terex PT70 is a popular compact track loader that is widely used in construction and landscaping. While it's known for its durability and versatility, like any piece of heavy machinery, the PT70 can encounter issues from time to time. One such issue that operators may face is a problem with the auxiliary hydraulics system. This article explores the common causes of auxiliary hydraulics issues in the Terex PT70, provides troubleshooting advice, and offers solutions to keep the machine running smoothly.
Understanding the Terex PT70 Auxiliary Hydraulics System
1. Purpose of the Auxiliary Hydraulics
The auxiliary hydraulics system on the Terex PT70 is designed to power additional attachments such as augers, breakers, and trenchers. It plays a crucial role in enhancing the loader's versatility by enabling it to perform a wide range of tasks, from digging to demolition. The auxiliary hydraulics are powered by the machine’s hydraulic system, which includes a pump, hoses, valves, and actuators.
Industry Insight: Compact track loaders like the Terex PT70 are commonly used in projects that require frequent switching between different attachments. The ability to power these attachments efficiently is a key feature that sets them apart from traditional skid-steer loaders.
2. Common Auxiliary Hydraulic Problems
Auxiliary hydraulic problems are not uncommon and can arise due to various reasons. The most frequent issues include:
1. Check the Hydraulic Fluid Level
One of the first things to check when the auxiliary hydraulics are malfunctioning is the hydraulic fluid level. Low hydraulic fluid can result in a lack of pressure or flow, causing attachments to work inefficiently or not at all. It’s important to ensure that the fluid is at the correct level and that there are no signs of contamination.
Pro Tip: Always use the recommended hydraulic fluid type for the Terex PT70 to ensure optimal performance. Using the wrong fluid can lead to pump failure and other system issues.
2. Inspect for Leaks
Hydraulic fluid leaks are a common cause of auxiliary hydraulic issues. Leaks can occur in various parts of the hydraulic system, including hoses, fittings, and pumps. Visually inspect all hydraulic lines and connections to check for signs of leakage.
Real-World Example: An operator of the Terex PT70 shared that their machine was experiencing a weak hydraulic flow to attachments. Upon closer inspection, they discovered a small crack in one of the hydraulic hoses that was causing the fluid to leak. After replacing the damaged hose, the auxiliary hydraulics functioned properly again.
3. Test the Pressure Relief Valve
The pressure relief valve is an essential component that regulates the hydraulic pressure in the system. If the pressure is too high or too low, it can cause issues with the performance of attachments. Testing and adjusting the pressure relief valve can help restore proper function to the auxiliary hydraulics.
Expert Tip: If the machine’s manual or service manual includes a procedure for adjusting the pressure relief valve, follow it carefully. Incorrect adjustments can lead to further damage to the hydraulic system.
4. Clean or Replace Filters
A clogged hydraulic filter can impede fluid flow, causing the auxiliary hydraulics to lose pressure and function improperly. Regular cleaning or replacing of the filters is essential for keeping the system running smoothly.
User Feedback: A PT70 owner reported that they resolved their hydraulic issues by replacing the clogged filter, which had been restricting the flow of fluid. After the filter change, their auxiliary hydraulics performed like new.
Solutions to Common Auxiliary Hydraulic Problems
1. Fixing Leaks in the Hydraulic System
If a leak is identified, it’s crucial to replace the damaged parts as soon as possible. Whether it’s a hose, fitting, or seal, repairing leaks ensures that the hydraulic fluid stays within the system, maintaining pressure and fluid flow.
Real-World Insight: A contractor shared how a Terex PT70 they were using developed a leak in the hydraulic hose during a tough construction job. After replacing the hose, they found that the hydraulic attachments resumed full functionality, improving productivity and reducing downtime.
2. Replacing or Repairing the Hydraulic Pump
In cases where the hydraulic pump is malfunctioning or not delivering the necessary pressure, the pump may need to be replaced or repaired. Hydraulic pumps can wear out over time, especially if the system is subjected to heavy use or poor maintenance.
Maintenance Tip: Ensure that the hydraulic fluid is changed regularly and that the system is free of contaminants, as dirt and debris can cause premature wear on the hydraulic pump.
3. Checking and Replacing the Solenoid Valve
The solenoid valve plays a crucial role in directing hydraulic fluid to different parts of the machine, including the auxiliary hydraulics. If this valve fails or becomes stuck, it can prevent the system from operating properly. Testing the solenoid valve and replacing it if necessary can restore proper hydraulic function.
Expert Insight: A technician noted that solenoid valve issues are often overlooked when diagnosing hydraulic problems. In one case, a faulty solenoid valve was the root cause of intermittent auxiliary hydraulic failure in a PT70.
Preventing Auxiliary Hydraulics Problems in the Future
1. Regular Maintenance Checks
Performing regular maintenance on the auxiliary hydraulics system can prevent many common problems from arising. This includes checking the hydraulic fluid levels, inspecting hoses and fittings, cleaning or replacing filters, and testing the pressure relief valve. Regularly servicing the hydraulic system ensures that everything is functioning properly and reduces the risk of unexpected failures.
Maintenance Schedule: According to industry experts, performing a hydraulic system check every 500 hours of operation can significantly extend the lifespan of the system. Keep an eye on the hydraulic fluid levels and make sure to flush and replace the fluid as needed.
2. Use Proper Attachments and Follow Operating Guidelines
Overloading the auxiliary hydraulics system or using the wrong attachments can strain the hydraulic components. Always ensure that the attachments used with the PT70 are compatible with the hydraulic system and follow the manufacturer’s recommended guidelines for operation.
User Insight: An operator shared that using an incompatible attachment caused an overload on the hydraulic system, which led to weak flow and eventual system failure. After switching to a compatible attachment, the hydraulics functioned normally.
Conclusion: Keeping Your Terex PT70 Auxiliary Hydraulics in Top Shape
The Terex PT70 is a highly capable machine, but like all heavy equipment, it requires regular maintenance and attention to detail to perform at its best. Auxiliary hydraulics problems, such as low flow, leaks, or pressure issues, are common but can be resolved through proper troubleshooting and repair.
By regularly checking the hydraulic fluid, inspecting for leaks, and maintaining the hydraulic system’s components, operators can ensure that their Terex PT70 continues to deliver reliable performance for years to come. If the problem persists, consulting a professional or referring to the service manual may be necessary to address more complex issues.
With the right care, the PT70’s auxiliary hydraulics can provide years of efficient and powerful performance, enhancing the machine’s versatility and making it an indispensable tool for various construction and landscaping tasks.
Understanding the Terex PT70 Auxiliary Hydraulics System
1. Purpose of the Auxiliary Hydraulics
The auxiliary hydraulics system on the Terex PT70 is designed to power additional attachments such as augers, breakers, and trenchers. It plays a crucial role in enhancing the loader's versatility by enabling it to perform a wide range of tasks, from digging to demolition. The auxiliary hydraulics are powered by the machine’s hydraulic system, which includes a pump, hoses, valves, and actuators.
Industry Insight: Compact track loaders like the Terex PT70 are commonly used in projects that require frequent switching between different attachments. The ability to power these attachments efficiently is a key feature that sets them apart from traditional skid-steer loaders.
2. Common Auxiliary Hydraulic Problems
Auxiliary hydraulic problems are not uncommon and can arise due to various reasons. The most frequent issues include:
- Weak or No Flow of Hydraulic Fluid: If the hydraulic fluid isn’t flowing properly, the attachments won't function as expected.
- Leaks: Hydraulic fluid leaks from hoses, fittings, or the hydraulic pump can significantly affect the system’s performance.
- Pressure Issues: If the pressure isn’t properly regulated, it can result in weak operation or the failure of attachments.
- Clogged Filters: A clogged filter can prevent proper fluid circulation, leading to poor performance.
1. Check the Hydraulic Fluid Level
One of the first things to check when the auxiliary hydraulics are malfunctioning is the hydraulic fluid level. Low hydraulic fluid can result in a lack of pressure or flow, causing attachments to work inefficiently or not at all. It’s important to ensure that the fluid is at the correct level and that there are no signs of contamination.
Pro Tip: Always use the recommended hydraulic fluid type for the Terex PT70 to ensure optimal performance. Using the wrong fluid can lead to pump failure and other system issues.
2. Inspect for Leaks
Hydraulic fluid leaks are a common cause of auxiliary hydraulic issues. Leaks can occur in various parts of the hydraulic system, including hoses, fittings, and pumps. Visually inspect all hydraulic lines and connections to check for signs of leakage.
Real-World Example: An operator of the Terex PT70 shared that their machine was experiencing a weak hydraulic flow to attachments. Upon closer inspection, they discovered a small crack in one of the hydraulic hoses that was causing the fluid to leak. After replacing the damaged hose, the auxiliary hydraulics functioned properly again.
3. Test the Pressure Relief Valve
The pressure relief valve is an essential component that regulates the hydraulic pressure in the system. If the pressure is too high or too low, it can cause issues with the performance of attachments. Testing and adjusting the pressure relief valve can help restore proper function to the auxiliary hydraulics.
Expert Tip: If the machine’s manual or service manual includes a procedure for adjusting the pressure relief valve, follow it carefully. Incorrect adjustments can lead to further damage to the hydraulic system.
4. Clean or Replace Filters
A clogged hydraulic filter can impede fluid flow, causing the auxiliary hydraulics to lose pressure and function improperly. Regular cleaning or replacing of the filters is essential for keeping the system running smoothly.
User Feedback: A PT70 owner reported that they resolved their hydraulic issues by replacing the clogged filter, which had been restricting the flow of fluid. After the filter change, their auxiliary hydraulics performed like new.
Solutions to Common Auxiliary Hydraulic Problems
1. Fixing Leaks in the Hydraulic System
If a leak is identified, it’s crucial to replace the damaged parts as soon as possible. Whether it’s a hose, fitting, or seal, repairing leaks ensures that the hydraulic fluid stays within the system, maintaining pressure and fluid flow.
Real-World Insight: A contractor shared how a Terex PT70 they were using developed a leak in the hydraulic hose during a tough construction job. After replacing the hose, they found that the hydraulic attachments resumed full functionality, improving productivity and reducing downtime.
2. Replacing or Repairing the Hydraulic Pump
In cases where the hydraulic pump is malfunctioning or not delivering the necessary pressure, the pump may need to be replaced or repaired. Hydraulic pumps can wear out over time, especially if the system is subjected to heavy use or poor maintenance.
Maintenance Tip: Ensure that the hydraulic fluid is changed regularly and that the system is free of contaminants, as dirt and debris can cause premature wear on the hydraulic pump.
3. Checking and Replacing the Solenoid Valve
The solenoid valve plays a crucial role in directing hydraulic fluid to different parts of the machine, including the auxiliary hydraulics. If this valve fails or becomes stuck, it can prevent the system from operating properly. Testing the solenoid valve and replacing it if necessary can restore proper hydraulic function.
Expert Insight: A technician noted that solenoid valve issues are often overlooked when diagnosing hydraulic problems. In one case, a faulty solenoid valve was the root cause of intermittent auxiliary hydraulic failure in a PT70.
Preventing Auxiliary Hydraulics Problems in the Future
1. Regular Maintenance Checks
Performing regular maintenance on the auxiliary hydraulics system can prevent many common problems from arising. This includes checking the hydraulic fluid levels, inspecting hoses and fittings, cleaning or replacing filters, and testing the pressure relief valve. Regularly servicing the hydraulic system ensures that everything is functioning properly and reduces the risk of unexpected failures.
Maintenance Schedule: According to industry experts, performing a hydraulic system check every 500 hours of operation can significantly extend the lifespan of the system. Keep an eye on the hydraulic fluid levels and make sure to flush and replace the fluid as needed.
2. Use Proper Attachments and Follow Operating Guidelines
Overloading the auxiliary hydraulics system or using the wrong attachments can strain the hydraulic components. Always ensure that the attachments used with the PT70 are compatible with the hydraulic system and follow the manufacturer’s recommended guidelines for operation.
User Insight: An operator shared that using an incompatible attachment caused an overload on the hydraulic system, which led to weak flow and eventual system failure. After switching to a compatible attachment, the hydraulics functioned normally.
Conclusion: Keeping Your Terex PT70 Auxiliary Hydraulics in Top Shape
The Terex PT70 is a highly capable machine, but like all heavy equipment, it requires regular maintenance and attention to detail to perform at its best. Auxiliary hydraulics problems, such as low flow, leaks, or pressure issues, are common but can be resolved through proper troubleshooting and repair.
By regularly checking the hydraulic fluid, inspecting for leaks, and maintaining the hydraulic system’s components, operators can ensure that their Terex PT70 continues to deliver reliable performance for years to come. If the problem persists, consulting a professional or referring to the service manual may be necessary to address more complex issues.
With the right care, the PT70’s auxiliary hydraulics can provide years of efficient and powerful performance, enhancing the machine’s versatility and making it an indispensable tool for various construction and landscaping tasks.
