What are the main aspects of the failure of the axial piston pump? Dalan Motor Xiaobian will discuss with you, mainly in the following six aspects:
What are the main aspects of the failure of the axial piston pump? Dalan Motor Xiaobian will discuss with you, mainly in the following six aspects:
1, the flow is not enough
1 box of oil is too low, the tubing and oil filter are blocked or too resistant and leaking;
2 The pump casing is not filled with oil in advance, leaving air;
3 The hydraulic pump center spring is broken, so that the plunger return stroke is not enough or can not return, causing the sealing performance between the cylinder block and the oil distribution plate to be lost;
4 the oil pan and the cylinder or the wear between the plunger and the cylinder;
5 There are two possibilities for variable pumps:
a. If it is low pressure, it may be caused by internal friction of the oil pump, so that the variable mechanism can not reach the limit position and the angle of deviation is small;
b. If it is high pressure, it may be caused by adjustment error;
6 oil temperature is too high or too low
2, pressure pulsation
1 The oil pan is worn between the cylinder block or the plunger and the cylinder block, and the internal leakage or external leakage is too large;
2 For the variable pump, the deflection angle of the variable mechanism may be too small, so that the flow rate is too small, and the internal leakage is relatively increased, so that the oil cannot be continuously supplied externally;
3 The servo piston is inconsistent with the movement of the variable piston, and occasional or frequent pulsation occurs;
4 the oil pipe is blocked, the resistance is high and the air leaks;
3, noise
1 There is air in the pump body;
2 The oil level of the fuel tank is too low, the suction pipe is blocked and the resistance is large, and the air leaks;
3 The pump and the oil pump motor are not concentric, so that the pump and the drive shaft are subjected to radial force.
4, fever
1 internal leakage is too large;
2 moving parts are worn;
5, leakage
1 bearing rotary seal is damaged;
2 O-ring seals at each joint are damaged;
3The oil pan and the cylinder block or the wear between the plunger and the cylinder block will cause the leakage of the oil return pipe to increase, which will also cause the internal leakage between the high and low cavity;
4 variable piston or servo piston wear;
6, the pump can not rotate (catch)
1 The plunger is stuck with the cylinder (may be caused by oil or oil temperature change);
2 the shoe falls off (may be stuck by the plunger, or caused by a load);
3 plunger ball head broken.
----- Editor-in-Chief: Dalan Oil Pump Motor 02-Procurement Consultant
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