What is the process of secondary maintenance of the automobile brake system 20

Level 2 maintenance is the maintenance of a vehicle that is carried out by a repair company. In addition to the first-level maintenance operation, the judgment content of the operation center is mainly to inspect and adjust the safety components that are easy to wear or deform after a certain period of time, such as steering knuckles, steering rocker arms, brake shoes, suspensions, etc., and disassemble and inspect the tires and carry out tire rotation. Level 2 maintenance must be performed on a regular basis.

The envy of the secondary maintenance of automobiles is mainly based on inspection and adjustment.

Content. 1) Replace the oil in the oil pan, and clean the oil pan, oil pump and filter collector with kerosene.

2) Check and adjust the valve clearance.

3) Tighten the bolts of the cylinder head, intake and exhaust manifolds and mufflers. And check whether the liner is in good condition in the above parts, and if there is a problem with the gasket, it should be replaced in time.

4) Check the clutch and adjust the free stroke of the clutch pedal as needed.

5) Check the tightening of the transmission and the gear shift mechanism. Add or change gear oil and clean the breather plug.

Summary. Dear dear, it's a pleasure to answer your <>

Due to the wear and tear of the brake pads while driving, it is important to replace the brake pads regularly. If you use excessively worn brake pads, the braking force will be weakened and the braking distance will be extended. 2.

Brake fluid replacement. Brake fluid is absorbent, and moisture may accumulate after a long period of use, causing brake failure, so it is necessary to replace the brake fluid regularly, generally every 2 years or so. 3.

Brake disc grinding. The surface of the brake disc will be worn out during use, and when there is less friction, it needs to be grinded. Brake disc grinding makes the brakes more powerful while reducing brake noise and vibration.

Briefly describe the first-level maintenance of brakes.

Dear dear, it is a great honor for God or honor to answer your <>

Due to the wear and tear of the brake pads while driving, it is important to replace the brake pads regularly. If you use excessively worn brake pads, the braking force will be weakened and the braking distance will be extended. 2.

Brake beam fluid replacement. Brake fluid is absorbent, and after a long period of use, it may cause brake failure due to the accumulation of water disturbances, so it is necessary to replace the brake fluid regularly, and it is generally recommended to replace it every 2 years or so. 3.

Brake disc grinding. The surface of the brake disc will be worn out during use, and when there is less friction, it needs to be grinded. Brake disc grinding makes the brakes more powerful while reducing brake noise and vibration.

Kiss <>

The brake is one of the important parts of the vehicle, which is mainly used to slow down and stop by grabbing the wheels. The brake usually includes brake pads, brake discs, brake calipers, etc., in which the brake pads are used to hide the effect of the brake by friction with the rotating brake disc, and the brake discs and brake calipers are used to support and control the movement of the brake pads. The operating principle of the brake is to achieve the purpose of braking by converting the friction between the brake pad and the brake disc on the brake into the kinetic energy of the wheel base.

Summary. Basic Components Required for Brake System MaintenanceItemsThe basic components required for maintenance of a braking system include brake pads, brake discs, and checking brake fluid. (1) Brake pad maintenance: Brake pad is one of the most important components in the braking system.

Because brake pads are wear parts, special attention should be paid to maintenance. Usually, cars are designed with an early warning function for excessive wear of brake pads. When the brake pad is worn to the limit of use, it will light up the fault light or make a sharp metallic sound, prompting the owner to replace it in time.

Short-answer questions, single choice.

Basic Components Required for Brake System MaintenanceItemsThe basic components required for maintenance of a braking system include brake pads, brake discs, and checking brake fluid. (1) Brake pad maintenance: Brake pad is one of the most important components in the braking system. Because brake pads are wear parts, special attention should be paid to maintenance.

Normally, the car will be designed with the brake pads to overwear the old Lu old warning function. When the brake pad is worn to the limit of use, it will light up the fault light or make a sharp metallic sound, prompting the owner to replace it in time.

The main contents of the secondary maintenance of automobiles are: 1. Replace the oil of the oil pan, and clean the oil pan, oil pump and filter collector with kerosene; 2) Check and adjust the valve clearance. 3. Tighten the bolts of the cylinder head, intake and exhaust manifolds and mufflers, and check whether the liners of the above parts are in good condition; 4) Check the clutch and adjust the free stroke of the clutch pedal as needed. 5. Check the fastening of each part of the transmission and shift mechanism. In addition to the first-level maintenance operation, the second-level Weibhe dust protection is mainly used to inspect and adjust the steering knuckle, steering rocker arm, brake shoes, suspension and other safety components that are easy to wear or deform after a certain period of use, and disassemble and inspect the tires, carry out tire transposition, check and adjust the working conditions of the engine and exhaust pollution control devices, etc., and the maintenance company is responsible for the implementation of vehicle maintenance.

1.The process flow of secondary maintenance and maintenance of automobiles.

The basic operation items of secondary maintenance and maintenance of automobiles refer to the content that must be completed after the car has been driven to a certain mileage or used for a certain period of time, regardless of the technical condition of the car. Technical specifications applicable to all automotive secondary maintenance.

Figure 1-2 The process flow of secondary maintenance and maintenance of automobiles.

2.The operation content of the secondary maintenance and maintenance of the car.

In addition to completing the first-level maintenance operation, the secondary maintenance and maintenance of the automobile is mainly to check and adjust the safety parts that are easy to wear or deform after a certain period of use, such as steering knuckles, steering rocker arms and suspensions, and disassemble and inspect tires, carry out tire transposition, check and adjust engine conditions and exhaust pollution devices, etc., and the central operation content is to check and adjust.

1) Inspection items for secondary maintenance of automobiles. When testing the secondary maintenance test items of automobiles, the special testing instruments for the test items shall be used, and the accuracy of the instruments must meet the relevant regulations. The technical requirements of the secondary maintenance and testing items of automobiles shall refer to the relevant national technical standards or the requirements of the original factory, and the specific testing items are as follows:

Engine power, cylinder pressure.

Automobile exhaust pollutants, the role of three-way catalytic conversion devices.

Electronically controlled fuel injection system.

For diesel vehicles, check the fuel supply advance angle, fuel supply interval angle, and fuel injection pump supply pressure.

Braking performance, check the braking force.

Steering wheel alignment, mainly check the front wheel alignment angle and the amount of free rotation of the steering wheel.

Wheel dynamic balancing.

Headlamps. Maneuvering stability, checking for mistracking, shivering and head swing.

Transmission, check whether there is leakage, abnormal noise, loosening and cracks, etc., and whether the gear shift is light and flexible.

11] Clutch, check whether there is slippage, trembling, whether the separation is thorough, whether the engagement is stable.

12] Transmission shaft, check for leakage, abnormal noise, loosening and cracks.

13] rear axle, check whether the final reducer has leakage, abnormal noise, loosening and overheating.

2) Level 2 maintenance basic operation items. After the test is completed, the vehicle fault diagnosis is carried out according to the test results, and the secondary maintenance additional operation items and operation content for the purpose of eliminating the car fault are determined, and the normal technical condition of the car is restored. After the additional work items are confirmed, the secondary maintenance work is carried out together with the basic work items.

In the process of secondary maintenance, it is necessary to always run through the process inspection and make inspection records. In the process inspection, the technical requirements of each maintenance project must meet the relevant provisions of the relevant technical standards or factory instructions. Table 1-2 shows the basic operations for secondary maintenance of automobiles.

Table 1-2 Basic operations for secondary maintenance and maintenance of automobiles.

Note: "Comply" in the technical requirements column refers to compliance with the relevant technical regulations or technical requirements in practical application.

The purpose of the secondary maintenance of the car is to inspect and adjust, in addition to the implementation of all the items of the primary maintenance, the following items should be carried out:

i) Change the oil in the oil pan and clean the oil pan, oil pump and filter collector with kerosene.

2) Check and adjust the valve clearance.

3) Tighten the bolts of the cylinder head, intake and exhaust manifolds and mufflers. And check whether the liner in the above parts is in good condition, and replace it in time if there is a problem with the gasket.

4) Check the clutch and adjust the free stroke of the clutch pedal as needed.

5) Check the tightening of the transmission and the gear shift mechanism. Add or change gear oil and clean the breather plug.

6) Check the looseness of the universal joint and the intermediate support of the transmission shaft, dismantle and adjust it as necessary, and change the direction of the universal section of the cross shaft.

7) Check and tighten the bolts of each part of the drive axle. If there is an oil leakage, it should be eliminated in time. Add or replace the gear oil in the axle reducer as appropriate, and unclog the reducer vent.

8) Check the vibration damping of the shock absorber, and add the vibration damping fluid as necessary.

9) Dismantle and lubricate leaf springs.

10) Check the steering knuckle for damage and cracks. If damage or cracks are detected, replace the knuckle with a new one. Check the fit of the kingpin with the steering knuckle.

Dismantle and inspect the wear of the joints of the longitudinal and cross tie rods and steering arms. Adjust the toe of the front wheels according to the regulations. (Chuan dismantles and inspects the steering transmission universal joint as needed, and fills it with grease.)

12) Check the fixing condition of the steering gear, add or replace the lubricating oil; For the steering gear of power steering, the oil volume of the reservoir and the free rotation of the steering wheel must be checked, and if it exceeds T 150, it should be readjusted.

13) Check the integrity of the frame, traction device and radiator mount.

14) Disassemble, adjust and lubricate the front and rear wheels and service brakes, and adjust the gap between the brake shoes and the brake drum.

Check the connection of the parking brake parts, adjust the working stroke of the parking brake lever and the service brake pedal, and disassemble and inspect the brake room as necessary.

16) Check the wheels and rotate the wheels according to the regulations.

17) Check the working condition of the air compressor and eliminate oil leakage and air leakage faults.

18) Check the working condition of the generator regulator.

19) Disassemble and clean the generator and starter, and lubricate the front and rear bearings of the generator and the starter bearing.

20) Disassemble and inspect the air filter, clean the air filter element, and replace it as necessary.

21) Clean the centrifugal rotor filter and replace the filter element of the primary oil filter.

22) Check the integrity of radiators, water pumps, and fans.

23) For diesel vehicle engines, clean the diesel tank, fuel pump filter screen and pipeline, and replace the filter element of the diesel filter.

Brake clearance adjustment (but now most vehicles are automatically adjusted, so you can leave it alone), brake booster fluid level check, brake pedal idle stroke adjustment, brake shoe wear check and so on.

That can be divided into simple maintenance or in-depth maintenance.

Simple maintenance, check the wear of brake pads, the stroke of the handbrake (some cars are automatically adjusted), the amount of brake fluid and whether there is any deterioration, and the wear of the brake disc.

In-depth maintenance, in addition to simple maintenance, but also to check whether the brake master cylinder and the brake cylinder of each wheel are normal, and whether there will be oil leakage. Is the drum normal. Whether there is oil leakage in the connecting pipes and connections of all brake systems.

Whether the handbrake cable is worn with a short filament.

These are the basics, if there is anything missing, please mention it.