1. The hydraulic oil pump cannot absorb oil or have no pressure.
Causes
1. The rotation direction of the prime mover and the oil pump is inconsistent.
Cleaning method: correct the rotation direction of the prime mover.
2. The oil pump transmission key falls off.
Elimination: De novo transmission key.
3. The oil inlet and the oil outlet are reversed.
Cleaning method: select the correct connection according to the clarification.
4. The oil level in the oil tank is too low and the suction pipe is exposed.
Elimination: Make up for the oil.
5. The speed of the prime mover is too low and the suction power is lacking.
Cleaning method: increase the speed to above the minimum speed required by the oil pump.
6. The viscosity of the oil is too high.
Cleaning method: use the recommended viscosity of the operating oil.
7. The oil temperature is too low, so that the viscosity of the oil is too high.
Solution: Heat to the recommended normal operating oil temperature.
8. The oil suction pipeline or filter screen is blocked, and the oil absorption is poor.
Cleaning method: Clean the pipe or filtration equipment, remove the blockage, replace or filter the oil in the tank.
9. The oil suction filter has high filtration precision, and the oil absorption is not smooth.
Cleaning method: Select the filter correctly according to the instructions.
10. Leakage of suction tube.
Cleaning method: Check the oil suction pipeline and seal it tightly.
Second, the lack of flow and the flow value cannot be reached.
1. Not enough speed.
Elimination: Increase speed.
2. There is leakage in the hydraulic system.
Cleaning method: Check the system and correct the leakage point.
3. Because the oil pump of the red bean blogger room runs and vibrates for a long time, the pump cover screw is loosened.
Eliminate: Tighten the screws properly.
4. Leakage of oil suction pipeline.
Cleaning method: Check the oil suction pipeline and seal it tightly.
5. Lack of oil absorption.
(1) The oil level in the fuel tank is too low.
Elimination: Make up for the oil.
(2) The suction tube is blocked or has a small diameter.
Cleaning method: The diameter of the cleaning pipeline should be not less than that of the oil pump inlet.
(3) The suction filter is blocked or the flow rate is small.
Cleaning method: The inlet filter should be a filter with a flow rate greater than twice that of the oil pump.
(4) The viscosity of the engine oil is too high.
Cleaning method: use the recommended viscosity of the operating oil.
Third, the pressure cannot rise.
1. The oil pump is not oiled or the flow rate is lacking.
Elimination method: as described above.
2. The pressure regulated by the relief valve is too low or fails.
Cleaning method: adjust the pressure of the relief valve from the beginning or repair the relief valve.
3. There is a leak in the system.
Cleaning method: Check the system or correct the leakage point.
4. The oil pump works for a long time and the pump cover screw is loose.
Eliminate: Tighten the screws properly.
5. Leakage of suction tube.
How to eliminate: Look at all joints and seal them tightly.
Lack of oil absorption.
Cleaning method: Same as the above cleaning method.
Fourth, the noise is too loud.
1. Leakage of suction tube.
Cleaning method: Check the oil suction pipeline and seal it tightly.
2. Lack of oil absorption.
Elimination method: as described above.
3. The pump shaft is not concentrious with the prime mover.
Cleaning method: De novo device, to achieve the accuracy required by the clarification book.
4. There are bubbles in the oil.
Elimination method: Replenish the oil or adopt the structural method, and place the red bean blog mouth under the oil immersion surface.
5. The pump speed is too high.
6. The pump pressure is too high.
Cleaning method: reduce the pump pressure below the additional pressure.
7. Shaft seal leakage.
Eliminate: Replace the oil seal.
5. Excessive fever.
1. The oil temperature is too high.
Cleaning method: improve the heat dissipation conditions of the oil tank or add a cooler to control the oil temperature within the recommended normal operating oil temperature scale.
2. The viscosity of the oil is too low, and the diarrhea is too large.
Cleaning method: use the recommended viscosity of the operating oil.
3. The operating pressure is too high.
Elimination: Reduce the pressure below the additional pressure.
4. The oil return port is directly connected to the oil pump inlet.
Cleaning method: The oil return port is connected below the liquid level of the oil tank.
Sixth, the sensation is too big.
1. The pump shaft is not concentric with the motor shaft.
Cleaning method: De novo device, to achieve the accuracy required by the clarification book.
2. The device screw is loose.
Eliminate: Tighten the screws.
3. The speed or pressure is too high.
Solution: Adjust to the size promised.
4. Leakage of suction tube.
Cleaning method: Check all joints of the pipeline, seal and tighten.
5. Lack of oil absorption.
Sweeping method: Same as above.
6. There are bubbles in the oil.
Sweeping method: refill the oil or adopt the structural method to immerse the oil return port below the oil level.
Seven. External leakage.
1. Aging or damaged seals.
Eliminate: Replace the seal.
2. The connection between the inlet and outlet ports is loose.
Eliminate: Tighten the screws or fittings.
3. The sealing surface is convex.
Elimination: Polishing the sealing surface.
4. There is a sand hole on the shell.
Elimination: Replace the shell.
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