What is a car front wheel pump
Automobile front wheel pump usually refers to the brake pump, it is a part of the hydraulic brake system, the main role is to push the brake pad and brake drum friction, thereby reducing the speed and stop the vehicle. When the brake pedal is depressed, the master brake pump produces thrust, which presses hydraulic oil into the sub-pump, causing the piston to move and push the brake pads .
The working principle of the brake pump
The brake sub-pump works through a hydraulic system. Brake oil is stored in the master brake pump, and when the brake pedal is pressed, the master brake pump generates thrust and presses the hydraulic oil to the sub-pump. The piston in the branch pump moves, pushing the brake pad and the brake drum friction, so as to achieve the braking effect .
Care and maintenance advice
In order to ensure the normal operation of the brake pump, regular inspection and maintenance are recommended. Here are some maintenance suggestions:
cleaning and replacing brake oil : regularly disassembly brake pump for cleaning, and replace brake oil, to prevent impurities or dirt resulting in piston jam .
Apply lubricant : Glycerin (butter) on the return guide pin can reduce friction and ensure smooth operation of the pump .
Check the validity period of the brake oil : the validity period of the brake oil is generally 2 years, should be replaced in time .
The main function of the front wheel pump is to ensure that the engine is not high temperature . The automobile water pump pressurizes the coolant to make it flow continuously in the coolant circulation system, thereby taking away the heat generated by the engine components and preventing the engine from overheating .
Specifically, the automotive water pump pressurizes the coolant flowing through the radiator and sends it to the jacket in the engine block to further promote the flow of coolant and improve cooling efficiency .
In addition, the front wheel pump is also connected with the fan belt, driven by the engine, the hot water in the engine block is pumped out, while the cold water is pumped in, forming a cycle to maintain the normal working temperature of the engine .
automotive front wheel pump failure usually refers to the failure of an automotive water pump or ABS pump. The following are the specific manifestations, causes and solutions of the two pump failures:
Automobile water pump failure
Symptoms :
unstable idle : water pump failure will lead to engine idling speed instability, serious may lead to engine stalling .
coolant leakage : When the pump is damaged, the coolant may leak from the pump vent hole .
Increased noise : Pump failures can also lead to increased engine operating noise, usually friction as the engine rotates .
Reason :
aging seal ring : aging pump seal ring will lead to coolant leakage .
belt too tight : engine combination belt too tight will cause premature wear of the pump .
Antifreeze not replaced for a long time : internal corrosion will cause damage to the pump .
reached the service life not replaced : the pump reached the service life and not replaced in time .
The solution :
Replace the sealing ring and antifreeze : replace the sealing ring and antifreeze regularly to ensure the normal operation of the pump .
Adjust belt tension : Ensure that the belt tension is appropriate, avoid too tight or too loose .
Replace the water pump : if the water pump is seriously damaged, it is necessary to replace the water pump .
ABS pump failure
Symptoms :
ABS fault light on : in bad road conditions, the ABS fault light may turn on .
sensor pollution : sensor pollution will lead to poor signal transmission and affect the normal work of ABS system .
collision damage : The sensor cable may be damaged in a collision .
frequent sudden braking : Frequent sudden braking and emergency braking will damage the ABS pump .
Reason :
poor road condition : in bad road conditions, front wheel slip will cause ABS fault light .
sensor pollution : The sensor is polluted, resulting in poor signal transmission .
collision damage : The sensor connection cable is damaged due to collision.
natural aging : ABS pump failure due to sensor aging .
frequent sudden braking : Frequent sudden braking and emergency braking will damage the ABS pump .
The solution :
clean sensor : go to 4S shop to clean sensor and clear the fault code .
Replace the sensor : If the sensor is damaged, you need to replace it with a new one and clear the fault code .
repair ABS pump : if the ABS pump is damaged, go to the 4S shop in time for repair .
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