What are the inspection items of the car brake system?

Hello, the inspection items of the braking system are, brake discs, brake pads, brake cylinders, brake oil pipes, parking brakes, brake fluids, etc. Hope mine can help you, thanks.

The main testing items are; Wheel (axle) load, maximum braking force, maximum difference point of process difference, braking rate, unbalance rate, blocking rate.

Brake pad inspection: brake pad is one of the most important components in the braking system, because the brake pad is a wear part, special attention needs to be paid to maintenance. When the brake pads are worn to the limit, they will turn on the fault light or make a sharp and piercing metal sound to remind the owner to change the brake pad in time.

Brake disc inspection: Like the brake pads, the brake disc is a wear part, and the brake disc needs to be replaced at the same time as the brake pad is usually replaced twice. Of course, this is just in general, due to the difference in production cost and performance orientation of different models, the wear rate of the first brake disc is also different.

In everyday driving, a few tips can also better protect the brake discs. For example, in the run-in stage of the new car, the braking system also needs to be run-in, at this time, it needs to be gently braked, slowly run-in, if the new car is in a state of rough driving, strong braking, it is easy to cause brake disc hard injury, affect the service life.

Photo by Shi Lili of Pacific Automobile Network).

A car's braking system is very important for motorists. We want the police to check the car's brake system. How do we check it? Below, I will share the steps of the car's powertrain.

Check the brake fluid volume. The amount of brake fluid should be between the upper and lower lines of the reservoir. If brake fluid is insufficient, the same type and brand of brake fluid should be added and no other kinds of brake fluid or alcohol substitutes should be added.

Check the "foot feel" of the brake pedal of the hydraulic braking system. When you press the brake pedal, first feel the slight free stroke of the pedal, the free stroke is between 6mm and 20mm, continue to press the pedal, the pedal should have obvious resistance, until it cannot be pressed. If the pedal is on the soft side and there is no significant resistance, there is a problem with the braking system and it should be repaired.

If the first foot is pressed very low when the pedal is pressed, the second foot returns to normal, but there is a slight elasticity when the pedal is pressed hard, it indicates that there is an air body in the brake line, and the air body in the brake hydraulic line should be excluded. When the brake pedal is fully pressed, the brake pedal should be kept at a certain distance from the gear of the cab floor, which should meet the requirements of the model. If the distance is too small, it means that the shoe clearance of the wheel brake is too large, and the shoe clearance of the wheel brake should be adjusted.

Check the braking system for leaks. Check the technical condition of the braking system to eliminate looseness, oil leakage or air leakage in each connection.

Inspection in parking conditions. After the engine starts, after the engine runs for a few minutes, if the hydraulic braking system responds normally when the brake side beam pedal is pressed, it means that the pipeline system is normal.

Inspection in driving condition. Start the engine, release the handbrake, make the car travel at a speed of 20 30km h, press the brake pedal on a dry and flat road, the car should quickly slow down and stop without deviating. After the car brakes, release the brake pedal and continue to drive, the transport should be able to start and drive smoothly, and when the steering wheel does not move during driving, it should keep driving in a straight line and not deviate.

When the car travels a certain distance, stop and check the temperature of the brake drum, the temperature should be normal, not hot. @2019

step1

Check the brake fluid level. The reservoir of brake fluid should be between the upper and lower notches of the reservoir. If there is a lack of brake fluid, the same kind and brand of brake fluid should be added, and no other kinds of brake fluid or alcohol substitutes should be added.

step2

Check the "foot feel" of the brake pedal of the hydraulic braking system. When you press the brake pedal, you should first be able to feel the small free travel of the pedal (in line with the requirements of each model), and the free travel should be between 6 and 20mm. Continue to press the pedal, the pedal should have significant resistance until it cannot be pressed.

If the pedal is soft and there is no obvious resistance, it means that the braking system is faulty and should be repaired; If the first pedal is very low when the pedal is pressed, but the second foot returns to normal, but there is a slight amount of elasticity when the pedal is pressed hard, it indicates that there is air in the brake line, and the air in the brake hydraulic line should be excluded. When the brake pedal is pressed to the bottom, the brake pedal should be kept at a certain distance from the cab floor, which should meet the requirements of the model. Which mu distance is too small, indicating that the shoe clearance of the wheel brake is too large, and the shoe clearance of the wheel brake should be adjusted.

step3

Check the brake system for leaks. Check the technical condition of the braking system and rule out looseness, oil leakage or air leakage in each connection.

step4

Inspection in the parked state. After starting the engine, after a few minutes of engine operation, for hydraulic (including vacuum-assisted type) braking systems, if the brake pedal reacts normally, the piping system is normal.

step5

Inspection in driving condition. Start the engine, release the hand roller brake, so that the car is driving at a speed of 20 30km h, press the brake pedal on the dry and straight road, the car should quickly slow down and stop, and there is no deviation phenomenon after burning. After the car brakes, when the brake pedal is released and continues to drive, it should be able to start and drive smoothly, and when the steering wheel is not moved during driving, the car should keep driving in a straight line without drifting.

When the car travels a certain distance (without stepping on the brakes), stop to check the temperature of the brake drum (brake disc box brake pads), the temperature should be normal and not hot.

A car's braking system is very important for the driver. We want the police to check the car's brake system. How to check in general? Bian Xiao, let me share the steps of the automotive power system.

Check the brake fluid volume.

The amount of brake fluid should be between the upper and lower lines of the reservoir. If brake fluid is insufficient, the same type and brand of brake fluid should be added, and no other type of brake fluid or alcohol substitute should be added.

Check the "foot feel" of the brake pedal of the hydraulic braking system.

When stepping on the brake pedal, the first thing to feel is the small free stroke of the pedal (to meet the requirements of various models), the free stroke should be between 6-20mm, continue to press the pedal, the pedal should have obvious resistance, until it can not be stepped on. If the pedal is soft and there is no obvious resistance, it means that the brake system is faulty and should be repaired; If the first foot is low when you press the pedal, and the second foot returns to normal, but there is a little elasticity when you press the pedal hard, it means that there is air in the brake line, and the air in the brake hydraulic line should be excluded. When the brake pedal is pressed to the end, a certain distance should be maintained between the brake pedal and the cab floor, which should meet the requirements of the model.

If the distance is too small, the shoe clearance of the wheel brake is too large, and the shoe clearance of the wheel brake should be adjusted.

Check the braking system for leaks.

Check the technical condition of the braking system to eliminate looseness, oil leakage or air leakage in all connections.

Check in the parked state.

A few minutes after starting the engine and running the ** motor, for hydraulic (including vacuum-assisted) braking systems, if the brake pedal is pressed and the response is normal, the piping system is normal.

Inspection under driving conditions.

Start the engine, release the hand brake, and let the car go at a speed of 20 30km h, press the brake pedal on a dry and flat road. The car should slow down quickly and stop without deviating. After the car brakes, it should be able to start and drive smoothly when you release the brake pedal and continue driving.

And when the steering wheel is not moving, the car should keep driving in a straight line and not deviate. When the car travels a certain distance (without stepping on the brakes), stop and check the temperature of the brake drum (brake disc box brake pad), the temperature should be normal and not hot.