What does the rear brake caliper of a car mean
The rear brake caliper of a car is a key component in the braking system. It is responsible for converting the hydraulic energy transmitted by the master cylinder into mechanical energy and achieving deceleration or stopping by pushing the brake pads to rub against the brake drums or brake discs.
Core function
The rear brake caliper (also known as the brake caliper) is hydraulically driven by the internal piston to press the brake pads against the brake drum or disc, generating friction to reduce the vehicle speed.
Working principle
Youdaoplaceholder0 Hydraulic transmission : When the brake pedal is depressed, the master cylinder presses hydraulic oil into the slave cylinders, pushing the piston to move.
Youdaoplaceholder0 Mechanical execution : The piston pushes the brake pads to rub against the brake drum, achieving braking.
Youdaoplaceholder0 Return oil reset : After releasing the brake pedal, the hydraulic oil flows back to the master cylinder, and the piston resets.
Q&A
Youdaoplaceholder0 Fault manifestations : Jamming, oil leakage and abnormal noise may cause braking failure. Regular inspection and maintenance are required.
Youdaoplaceholder0 Maintenance suggestions : Regularly check the brake fluid level, the sealing of the caliper and the wear of the brake pads.
The rear brake caliper of a car is a key component of the braking system. Its main function is to convert the hydraulic energy input by the brake master cylinder into mechanical energy, and generate friction by pushing the brake pads to achieve vehicle deceleration or stopping.
Core function
Energy conversion: Convert hydraulic energy into mechanical energy to drive the brake pads to clamp the brake disc.
Brake execution: As a terminal execution component, it directly participates in the braking action.
Working principle
Hydraulic system: The piston is pushed by hydraulic pressure, causing the brake pads to come into contact with the brake discs.
Pneumatic system: Some models adopt pneumatic drive, with similar principles but different power sources.
Q&A
Jamming: It may cause the braking to be insensitive and requires regular inspection and maintenance.
Oil leakage: Hydraulic system failure. The sub-pump needs to be replaced in time.
Abnormal noise: It may be caused by wear and tear or aging of components.
Youdaoplaceholder0 A malfunction of the rear brake caliper of a car may cause problems such as brake failure, abnormal noise, and soft pedals, which require timely inspection and repair . The following are the specific manifestations, causes and handling methods:
Common fault manifestations
Youdaoplaceholder0 Oil leakage : There is oil stain at the connection between the sub-pump and the oil pipe, and the brake pedal is too soft when pressed.
Youdaoplaceholder0 Brake deviation : When the brake is applied, the steering wheel shifts to one side, which may be due to uneven wear of the brake pads or malfunction of the caliper.
Youdaoplaceholder0 Abnormal noise : A sharp metallic friction sound is emitted when braking, which may be caused by thinning, rusting of the brake pads or jamming of the caliper piston.
Youdaoplaceholder0 Poor pedal return : If the pedal does not rise or show no resistance after braking, it may be due to the piston of the caliper being stuck or the return spring being broken.
Youdaoplaceholder0 Brake shudder : The pedal feels a significant springiness, which may be related to the displacement of the caliper piston or the unevenness of the brake pads.
Cause of malfunction
Youdaoplaceholder0 Mechanical component damage : rust on the piston, aging of the sealing ring, blockage of the conduit or breakage of the return spring.
Youdaoplaceholder0 Brake fluid problem : Long-term non-replacement leads to deterioration of the fluid and high water content, causing rust inside the caliper.
Youdaoplaceholder0 External factors : external impact, excessive wear of brake pads or long-term lack of maintenance.
Processing method
Youdaoplaceholder0 Check the brake fluid : if the fluid is dirty or has a high water content, replace it with new fluid and drain the air.
Youdaoplaceholder0 Cleaning and lubrication : After disassembling the sub-pump, clean the rust on the piston and cylinder block, and apply grease or engine oil.
Youdaoplaceholder0 replace parts :
When the piston is stuck or severely rusted, the sub-pump assembly needs to be replaced (original factory parts are recommended).
When the sealing ring ages or leaks oil, replace the sealing part or the entire sub-pump.
Youdaoplaceholder0 Professional maintenance : If self-handling is ineffective, a technician must disassemble the distribution pump, thoroughly clean it and reassemble it.
Precautions
The sub-pump is not a vulnerable part and has a normal service life of up to 200,000 kilometers. Most damages are caused by improper maintenance or quality issues.
Failure to handle faults in a timely manner may lead to brake failure, which requires priority inspection and repair.
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