Excavator oil pressure alarm light, oil pressure is too low how to do?
Posted: Nov 13th, '24, 22:24
When the engine oil pressure is low, the fault light buzzes and alarms. The driver should stop the machine immediately, check the oil level and viscosity simply through the oil gauge, and check whether the oil filter is normal. When these two items are normal, there may be a problem with the oil filter bypass valve!
The oil filter bypass valve is set up to maintain the normal oil pressure of the main oil passage, which is an important part of the lubrication system. If the bypass valve is damaged, the excavator may have low oil pressure, poor lubrication effect, and seriously may cause the engine to have no dry wear of lubricating oil.
Bypass valve action
The bypass valve is connected to the oil filter in parallel, and its function is that when the filter element is blocked by too much impurities, it can temporarily allow the oil to bypass the oil filter and reach the parts of the engine that need lubrication to avoid causing greater losses;
When the oil filter is seriously blocked by foreign matter, the lubricating oil cannot pass through the filter, in order to prevent the oil supply interruption of the lubrication system, the bypass valve on the oil filter automatically opens, and the oil flows directly into the main oil channel through the bypass valve, so that the lubrication system of the engine will not run out of oil.
Fault phenomenon
1, excavatoroil pressure is insufficient, oil pressure fault light
2. The excavatoroil filter is blocked, the fault is still the same after cleaning or replacing the oil filter, and the oil pressure is still low
3, excavatoroil temperature is too high
4, engine bearing shell abraded, crankshaft and camshaft abraded
Fault handling
1. Check the oil filter to see if the oil filter is blocked.
2, remove and check the bypass valve, disassemble and check whether the seal is not good, resulting in oil leakage.
3. Check whether the pressure regulating spring of the bypass valve is softened or broken, replace the spring or adjust the pressure.
Sum up
excavatoroil pressure is low, bypass valve is only one of the reasons, many people do not know the oil bypass valve working principle and function, ignore this point in the troubleshooting and maintenance process will take a lot of detcorners. It is recommended that you do not have to worry about failure, as long as you understand the working principle, system analysis, and careful investigation can eliminate the fault and avoid detdetments
Choose BONOVO for high-quality, customizable brush cutters for skid steers with fast delivery. Contact us today to discover how our superior products can enhance your land management tasks!
for more info just visit our website at www.bonovogroup.com
contact # : +86 158 6218 2088
email : sales@bonovogroup.com!
The oil filter bypass valve is set up to maintain the normal oil pressure of the main oil passage, which is an important part of the lubrication system. If the bypass valve is damaged, the excavator may have low oil pressure, poor lubrication effect, and seriously may cause the engine to have no dry wear of lubricating oil.
Bypass valve action
The bypass valve is connected to the oil filter in parallel, and its function is that when the filter element is blocked by too much impurities, it can temporarily allow the oil to bypass the oil filter and reach the parts of the engine that need lubrication to avoid causing greater losses;
When the oil filter is seriously blocked by foreign matter, the lubricating oil cannot pass through the filter, in order to prevent the oil supply interruption of the lubrication system, the bypass valve on the oil filter automatically opens, and the oil flows directly into the main oil channel through the bypass valve, so that the lubrication system of the engine will not run out of oil.
Fault phenomenon
1, excavatoroil pressure is insufficient, oil pressure fault light
2. The excavatoroil filter is blocked, the fault is still the same after cleaning or replacing the oil filter, and the oil pressure is still low
3, excavatoroil temperature is too high
4, engine bearing shell abraded, crankshaft and camshaft abraded
Fault handling
1. Check the oil filter to see if the oil filter is blocked.
2, remove and check the bypass valve, disassemble and check whether the seal is not good, resulting in oil leakage.
3. Check whether the pressure regulating spring of the bypass valve is softened or broken, replace the spring or adjust the pressure.
Sum up
excavatoroil pressure is low, bypass valve is only one of the reasons, many people do not know the oil bypass valve working principle and function, ignore this point in the troubleshooting and maintenance process will take a lot of detcorners. It is recommended that you do not have to worry about failure, as long as you understand the working principle, system analysis, and careful investigation can eliminate the fault and avoid detdetments
Choose BONOVO for high-quality, customizable brush cutters for skid steers with fast delivery. Contact us today to discover how our superior products can enhance your land management tasks!
for more info just visit our website at www.bonovogroup.com
contact # : +86 158 6218 2088
email : sales@bonovogroup.com!