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Hydraulic breakers are essential tools in construction, mining, and demolition projects worldwide. They are designed to deliver powerful impacts, breaking tough materials like concrete, asphalt, and rock into manageable pieces. However, like any piece of machinery, hydraulic breakers can experience issues that disrupt operations, causing delays and increasing maintenance costs.
One of the most common problems operators face is failed hammering, when the hydraulic breaker does not perform as expected. Additionally, issues related to automatic lubrication systems and general lubrication can significantly impact the efficiency and longevity of hydraulic breakers.
This blog will explore practical troubleshooting tips for common hydraulic breaker problems, including failed hammering, lubrication system failures, and ways to ensure your equipment continues to operate smoothly.
1. Troubleshooting Failed Hammering
Failed hammering is a frustrating issue that can halt work on a job site. When the hydraulic breaker fails to deliver impact energy, the machine may still run, but it won’t break material effectively, slowing down the entire operation. Here’s how to troubleshoot and resolve the problem:
Possible Causes:
- Low Hydraulic Pressure: If the hydraulic pressure is too low, the breaker will not deliver sufficient force to break material. This can happen if the excavator’s hydraulic system is not providing enough flow or pressure to the breaker.
- Nitrogen Pressure Issues: Hydraulic breakers rely on nitrogen gas to provide the necessary impact force. If the nitrogen pressure is too low, the breaker’s hammering action will be weak or non-existent.
- Clogged Hydraulic Filter: A clogged hydraulic filter can restrict oil flow, causing reduced performance in the breaker.
Worn-Out Bushings or Seals: Over time, bushings and seals wear out, which can affect the breaker’s efficiency.
Solutions:
- Check Hydraulic Pressure: Ensure the hydraulic system is providing the correct pressure (usually specified in the breaker’s manual). If the pressure is low, check the oil levels and ensure that the excavator’s hydraulic pump is functioning properly.
- Recharge Nitrogen: If the nitrogen pressure is low, the breaker will need to be recharged. This is typically done by a technician who can refill the accumulator to the recommended level.
- Clean or Replace Hydraulic Filters: Regularly inspect the hydraulic filters and clean or replace them as needed to ensure proper oil flow.
- Replace Worn Bushings and Seals: Inspect the breaker’s bushings and seals regularly. Worn parts should be replaced immediately to avoid further damage to the system.
2. Automatic Lubrication System Failures
Many modern hydraulic breakers come with an automatic lubrication system, designed to ensure consistent lubrication of key components like the tool, bushings, and piston. However, like any mechanical system, the lubrication system can fail or become less effective over time.
Common Lubrication Issues:
- Lack of Lubrication: If the automatic lubrication system fails, the breaker may not receive adequate lubrication, leading to excessive wear on moving parts.
- Over-Lubrication: If the system delivers too much grease, it can cause blockages or excess grease buildup that interferes with the breaker’s operation.
- Grease Contamination: Contaminated grease or improper grease type can cause damage to seals and moving parts.
Solutions:
- Check Lubrication System Settings: Ensure the automatic lubrication system is set to the correct grease flow rate, as specified by the manufacturer. Adjustments may be necessary if the system has been set incorrectly or is malfunctioning.
- Inspect Grease Lines: Inspect the grease lines for blockages or leaks. Over time, grease lines can become clogged with dirt or debris, preventing proper grease delivery.
- Regular Grease Refills: Make sure the grease reservoir is filled regularly and is using the correct type of grease. Always follow the manufacturer’s recommendations regarding grease type and quantity.
- Check for Contaminants: If grease appears contaminated, drain the system, clean the components, and replace with fresh, clean grease. It’s also a good idea to regularly change the grease to prevent buildup.
3. Manual Lubrication and Maintenance
While automatic lubrication systems are convenient, there may be times when manual lubrication is needed, especially when the automatic system is not functioning properly or during routine maintenance. Proper lubrication is crucial for the longevity and performance of the hydraulic breaker.
Common Manual Lubrication Problems:
- Insufficient Lubrication: Applying too little grease can result in increased friction between moving parts, causing rapid wear and overheating.
- Excessive Lubrication: Over-lubricating can cause grease to leak out, damaging seals and potentially blocking hydraulic components.
- Incorrect Lubricant Type: Using the wrong type of grease can lead to seal failure and increased wear on the breaker.
Solutions:
- Apply the Right Amount of Lubricant: Use the correct amount of lubricant, as specified by the manufacturer. Generally, it’s better to apply slightly less than too much.
- Use High-Quality Grease: Always use the recommended grease type. Hydraulic breakers usually require a high-viscosity grease that can withstand high pressure and temperature.
- Lubricate Frequently: Perform manual lubrication at regular intervals, especially after long working hours or exposure to harsh conditions. This ensures moving parts are properly protected and reduces friction.
4. Other Common Hydraulic Breaker Problems
1. Overheating
Symptoms: The hydraulic breaker becomes excessively hot during operation, which can lead to reduced performance or machine shutdown.
Solution: Ensure the hydraulic oil is of the proper type and temperature. Check the cooling system to ensure its functioning correctly. Overheating can also be a sign that the breaker is being used for prolonged periods or at too high an impact force.
2. Hydraulic Breaker Vibration Issues
Symptoms: Excessive vibration during operation, which may indicate problems with the breaker or machine.
Solution: Inspect the breaker for loose parts, worn bushings, or damaged seals. Excessive vibration could also be a sign that the excavator is not properly aligned with the breaker.
3.Hydraulic Breaker Inconsistent Impact
Symptoms: The breaker’s impact energy seems inconsistent, causing uneven results when breaking material.
Solution: Check the hydraulic flow rate, oil levels, and accumulator pressure. Inconsistent impact can be due to fluctuations in hydraulic pressure or low nitrogen levels in the accumulator.
Summary:
Hydraulic breakers are powerful tools that can significantly improve productivity on job sites. However, when they encounter issues like failed hammering, lubrication failures, or overheating, they can bring operations to a standstill. By understanding common problems and troubleshooting effectively, operators can minimize downtime and keep the equipment running smoothly.
Remember to always follow manufacturer guidelines, perform regular maintenance, and use high-quality lubricants to extend the life of your hydraulic breaker and ensure efficient performance in tough conditions.
With the right knowledge and proactive maintenance, hydraulic breakers can continue to deliver the power and reliability needed for successful excavation, demolition, and construction projects.
FAQs
1. How often should I check the lubrication system of my hydraulic breaker?
It’s recommended to check the lubrication system daily during active work. Ensure the grease lines are clear, the grease flow is adequate, and there are no leaks.
2. What can cause a hydraulic breaker to fail hammering?
Failed hammering can occur due to low hydraulic pressure, insufficient nitrogen pressure, clogged hydraulic filters, or worn-out seals and bushings. Always inspect these components when troubleshooting.
Beilite Machinery Co., Ltd.
40008-40008
info@beilite.com
