Working principle of hydraulic pump
The hydraulic pump of the mixer truck is a key component, mainly responsible for converting the power output of the engine into hydraulic energy to provide power for the mixer truck. The main working principle of a hydraulic pump is to use centrifugal force and suction pressure to suck in oil and compress it, and drive the hydraulic cylinder to work through high-pressure oil.
Common hydraulic pump faults
Oil leakage phenomenon: It may be caused by aging or wear of seals, or improper installation process.
Loud sound: It is mainly caused by wear of internal parts of the hydraulic pump.
Hydraulic pump heating: It may be due to inappropriate oil, serious wear of internal parts of the pump, aging of seals, etc.
Insufficient oil output: This may be caused by insufficient oil, blocked suction pipe, or air intake from the oil pump.
Hydraulic pump maintenance steps
Dismantling hydraulic pump: Firstly, it is necessary to remove the parts in front of the hydraulic pump, including the suction pipe, inlet and outlet valves, pressure gauge, etc. Then remove the pump from the bracket.
Cleaning: Clean the inside of the pump and casing thoroughly, removing all oil stains and impurities.
Replace seals: The seals of hydraulic pumps are easily worn parts and need to be replaced regularly. When replacing, it is necessary to pay attention to the model and size of the new seal, as well as the correct installation method.
Assemble hydraulic pump: Assemble the cleaned pump and install all corresponding parts. Attention should be paid to the tightening force and installation sequence during assembly.
Hydraulic pump maintenance method
Regularly replace the oil: The oil is the core of the operation of the hydraulic pump and needs to be replaced regularly and adjusted according to the use of the vehicle.
Check the working condition of the hydraulic pump every day: Regularly check the working condition of the hydraulic pump, including sound, oil leakage, oil output, pump temperature, etc., to find and solve problems in time.
Check each part before parking: Before parking, check whether each part is damaged, worn, etc., and repair and replace it in time.
