Excavator Hydraulic Pump Good Performance

In the high-intensity working conditions, the excavator hydraulic pump will be a high probability of failure, for the excavator hydraulic pump failure checking steps, we can make the following detailed description, in order to provide more comprehensive and practical guidance for the relevant personnel, so as to improve the efficiency of fault detection and resolution.

1. Check the key components

(1) Filter element inspection: carefully look inside the filter element to confirm the presence of abnormal impurities. These impurities may include metal shavings, rubber fragments, etc. If metal shavings are found, the filter element should be analyzed. If metal shavings are found, analyze the source. A small amount of metal debris may be caused by the package foot and hydraulic cylinder aging; if too much debris, it may indicate that the foot part of the package has been seriously damaged, need to be replaced in a timely manner. At the same time, check whether there is abnormal discharge of oil in the hydraulic pump casing to determine whether there is a leakage problem in the pump body.

(2) hydraulic pump sound and vibration check: listen to the sound of the hydraulic pump operation, to determine whether there is abnormal noise or vibration.

If the sound is abnormal, first check whether the regulator frequency sound, and check whether the regulator release valve is working properly.

Abnormal vibration or murmur may originate from the phenomenon of cavitation or internal damage to the hydraulic pump, need to be further investigated.

2. Oil circuit inspection

When checking the oil circuit, in addition to comparative testing of the performance of the two hydraulic pumps, but also to check the oil pipe, fittings, valves and other components whether there is leakage, blockage or damage. Special attention should be paid to check whether the flow and pressure of hydraulic oil meet the system requirements, and whether the hydraulic oil is deteriorated or contaminated.

3. Pressure measurement

If you suspect that the failure is related to the control system, there is no need to disassemble the hydraulic pump for maintenance. At this point, the pressure can be measured at different measuring points in the oil circuit to check whether the pressure meets the system requirements.

4. Meticulous inspection of wear limits

When checking the wear of hydraulic cylinder, valve plate and rotary swashplate, use professional inspection tools for accurate measurement.

For parts with serious wear, they should be replaced or adjusted in time to avoid system failure or safety accidents caused by component failure.

5.Daily maintenance and repair

In daily use, pay attention to the correct operation and maintenance of the excavator. Regularly replace the hydraulic oil and filter element, clean the hydraulic oil tank and pipeline, keep the hydraulic system clean and smooth. At the same time, check the operation status of the hydraulic pump and hydraulic system regularly to find and deal with potential problems in time.

If you encounter a fault that is difficult to solve by yourself, the fastest way is to contact a professional excavator repair point. When the excavator hydraulic pump is seriously damaged, it should be repaired and the related parts should be replaced in time. Hebei Keluo Construction Machinery Co., Ltd. is a trustworthy company that strictly follows European standards and German quality. Whether you need a cylinder head, cylinder block, cylinder liner, piston, camshaft, oil pump, generator, water pump, air compressor, injector or fan oil seal gasket, we can meet your needs. In addition, Keluo has established good cooperation with customers all over the world, not only because we have been deeply cultivating in this industry for more than twenty years and have rich experience in production, but also because of the good quality of our products and after-sales service. If you want to buy related products, we will be your best partner.