Axial piston pump common faults and troubleshooting methods
Axial piston pump common faults and troubleshooting methods
Do you know why piston pump has many problems, and how to choose the right way for troubleshooting？
As we manufacture all kinds of hydraulic pump, pump parts, piston assy, main valve, relief valve, regulators, bearing and so on.
Today we interview our engineer colleague to explain to you the causes as following:
Malfunction | Causes | elimination method |
Insufficient oil supply to pressure oil | 1. The leakage and external leakage of the hydraulic pump are serious. 2, hydraulic oil viscosity is too large 3. The motor speed has not reached the rated speed. 4, the oil filter is blocked, the hydraulic oil is not clean | 1. Check the hydraulic pump to manage the internal and external leakage 2, replace the qualified hydraulic oil 3, the motor speed reaches the rated speed 4. Clean the filter core or replace the filter core, clean the fuel tank, and replace the qualified hydraulic oil. |
Oil supply pressure does not reach the rated value | 1. Serious leakage in the hydraulic pump 2. The relief valve is not working properly. | 1. Check the hydraulic pump to manage the internal leakage. 2, replace the qualified relief valve |
Hydraulic pump noise phenomenon | 1. The hydraulic pump manufacturing accuracy is poor, and the rotating and sliding matching parts are unqualified (plunger, sliding shoe, variable head) 2, liquid oil viscosity is too large 3. Coaxial error is large when the coupling is installed 4. Reverberation phenomenon occurs in the relief valve |
1, replace the qualified hydraulic pump 2. Replace the qualified hydraulic oil, replace the large suction pipe, and replace the filter 3, re-adjust the coupling 4, the overflow valve adds a vibration damping pad |
Hydraulic pump heating issue |
1. Hydraulic pump manufacturing accuracy is poor 2, the oil is not clean, the oil pan, the plunger, the variable head wear and pull, the rotary resistance increases 3, the fuel tank volume is small, poor heat dissipation |
1, replace the qualified hydraulic pump 2. Replace qualified hydraulic oil and filter element, repair hydraulic pump or replace worn parts 3. Increase the volume of the fuel tank and improve the heat dissipation conditions. |
Hydraulic pump does not produce oil |
1. Motor steering and hydraulic pump steering are not correct 2. The fuel tank suction surface is too low 3. The cylinder compression spring is broken, and the cylinder body and the oil distribution plate are separated from each other. |
1. Correct the motor steering 2. The fuel tank is increased in hydraulic oil to reach the height of the oil standard. 3, replace the compression spring |
Variable mechanism invariant |
1, the variable piston is stuck 2, the variable head rotation journal and copper tile hair stuck 3. The control piston oil circuit is blocked in the variable piston |
1. Repair the variable housing, repair the brushed parts or replace the severely pulled parts 2. Clean all parts of the variable housing and clean the oil passages |
If you happen to the common faults as above, please pay attention to the causes and take action to choose the suitable way to solve the technical problem.
If you could not find the problem, you could contact us via email info@wonepart.com, or whatsapp:+86-15860751932, our engineer team will support you.
