1： The noise of hydraulic motor is increased; The reasons were studied:
1. Considering that the working pressure or total flow of the hydraulic pump station exceeds the rated total flow. Measures: find work pressure The reason for the existence of change;
2. Parts and components inside the hydraulic motor are damaged (such as equipment spindle, motor stator, bearing, etc.). The measures are as follows: dismantle the hydraulic motor first, inspect, repair and replace the parts. If the noise of the parts inspection motor is still very high after refitting, and the problem cannot be completely solved, it should be considered to replace a new hydraulic motor equipment;
3. Because of the serious pollution of hydraulic oil, the friction of moving parts is expanded. The solution is to inspect the hydraulic system, filter the hydraulic oil for several times, or it is really not possible to replace the new hydraulic oil with zero pollution and no impurities;
4. I saw that the moving parts inside were loose Eccentricity, etc. The solution is: inspect the inner parts, block the loose parts or replace the new parts;
5. Hydraulic impact or cavitation occurs in the system. One solution is to regularly check and clean the exhaust gas in the pump.
2： Cleaning method and steps of hydraulic motor: before the motor is formally put into use, the hydraulic motor shall be cleaned and tidy. The goal of cleaning is to remove the remaining pollutants in the motor Metal chips Chemical fibre composites Iron filings, etc. in the first two hours, even if the motor is not completely damaged, a series of common faults will occur.
Therefore, the engine oil circuit should be cleaned as follows:
1. Clean the oil tank with easy to dry cleaning liquid, and clean the residue with filtered air.
2. Clean all pipelines of the motor. In some cases, all pipelines of the motor must be pre immersed.
3. Install the oil filter into the pipeline to maintain the supply and delivery pipe and working pressure pipe of the valve.
4. A flushing plate is installed on the collector to replace the precision valve, such as the electro-hydraulic servo valve.
5. Check whether the size and connection of all pipelines are reasonable.
