How often should shock absorber top rubber be replaced?

There is no fixed replacement interval for automotive shock absorber top rubber. Generally, it should be replaced when it is broken. The connection between a shock absorber on a car and the car body is provided with a buffering rubber part, which is also called shock absorber top rubber. It can cushion vibration and improve driving comfort. Shock absorber is designed to suppress vibration of rebounding springs after shock absorption and impact from road surface. It leads to smoother drives effectively. When a car runs, although the shock-absorbing springs dampen the road impact, they move reciprocally. Shock absorber is intended to suppress such reciprocating motion. Generally, heavier vehicles use harder … Read more…

What’s the difference between filter and filter element?

Different functions: The purpose of filter is eliminating metal particles and impurities in air compressor oil, and ensuring cleanness of oil circulation systems and safe operation of machines. The purpose of filter element is eliminating dust and impurities in air inhaled by air compressors, and ensuring an adequate service life of oil/gas separation cores and oil. Different filtering methods: A filter realizes filtering with sponge and paper grid. A filter element makes use of superfine fiber and absorbent cotton for filtering. In a filter, filter paper retains impurities or gas. In a filter element, polluted air is cleaned adequately to meet production or living requirement. Name: filter repair kit/4-piece kit … Read more…

What are the functions of shock absorber?

The shock absorber is placed inside a suspension spring, which is typically connected to the carriage and the wheel carrier. There are two common methods for buffering the sliding movement of one axle cylinder in another. One method is called hydraulic damping, in which special hydraulic oil is used. The other method is called pneumatic shock absorption, in which pressurized nitrogen is used. The movement of shock absorber is bi-directional: When the car wheels sink due to load or braking, the shock absorber will be pressurized. When the car resumes its original load, the shock absorber will be depressurized. In the course of pressurization, the lower pressure pipe connecting the … Read more…

Regular maintenance methods for electronic fuel pump

The internal parts of an electronic fuel pump (e.g., the plunger and cylinder barrel of a roller type fuel pump) match each other in a very precise way. Hence, the key to extending the service life of a fuel pump is to keep the fuel highly clean, and to clean all filter screens according to operation and maintenance requirements at regular intervals (cloth with fiber should not be used for cleaning). This will prevent the fuel pump from being stuck by impurities or experiencing early wear. For a built-in electronic fuel pump, it is prohibited to start the engine forcibly if the fuel in the fuel tank is insufficient. When … Read more…

What is the purpose of shock absorber damping rubber block?

Damping rubber is a kind of rubber product with high elasticity and toughness, and an automobile refitting accessory. It is installed at the coil spring of the automobile suspension system, and serves the main purpose of cushioning and shock absorber protection. 1. It fully improves driving stability and comfort, thus creating more driving pleasure; 2. It can reduce car body vibration and absorb noise of the suspension system; 3. It helps solve the problem of spring weakness and lift the car body by 0.2-0.3 cm. But it cannot effectively increase carrying capacity of the car; 4. It can buffer and absorb transient pressure caused by rough roads to a certain … Read more…

Why can a car door be opened after the locking key is pressed?

First possible reason: The door is not fully closely before the locking key is pressed. This means the door is not actually locked. The car owner should check that all doors are well closed before locking them. Second possible reason: Locking may have failed due to interference by other signals. In this case, the owner should drive the car away from the site with the interference source and lock it again. Third possible reason: The door lock may have malfunctioned, which necessitates replacement of the lock. Such malfunction may be caused by frequent door slamming. Fourth possible reason: The car key may have a sensing function that unlocks the car … Read more…

What is the five components of a wheel hub?

The five components of a wheel hub include rim, spoke, offset, rim and groove bottom. The rim is matched with the tire assembly to support the wheel part of the tire. The spoke is connected to the axle hub to support the wheel part of the rim. The offset refers to the distance between the center surface of the rim and the installation surface of the spoke, which can be positive, zero, or negative. The rim is the hub component that maintains and supports the direction of the tire. The bead seat, also known as the mounting surface, contacts the tire bead and supports the rim component that maintains the … Read more…

What are possible reasons for clatter of a new shock absorber on bumpy road?

1. The shock absorber is not installed properly. If the shock absorber bolt is not tightened, the shock absorber may experience displacement during operation and result in abnormal noise; 2. The shock absorber may be defective. The abnormal noise of the new shock absorber is probably due to insufficient damping oil. You can try to check the damping rubber ring; 3. The travel of the new shock absorber is too short, and as a result it is easy to touch the bottom and make abnormal noise during operation. If a shock absorber on a car is damaged, it will make a clattering noise on bumpy roads due to poor coordination … Read more…

What is the composition of an electronic fuel pump?

An electronic fuel pump consists of three parts: pump body, DC motor, and enclosure. Electronic fuel pump is a device that continuously draws fuel out of a fuel tank and provides a fuel system with fuel at specified pressure and flow. Based on the function of electronic fuel pump, it is clear that performance of an electronic fuel pump will directly affect the working performance of the engine. In a fuel supply system for an electric fuel injection engine, the electronic fuel pump is the “heart”. It may be arranged in two ways in the fuel supply system. The first way is external mounting, that is, the fuel pump is … Read more…

What are the types of steering gears in the market?

Depending on energy transmission media, power steering gears can be grouped into two types: pneumatic and hydraulic. A pneumatic power steering gear should not be used for trucks with very heavy load, because the working pressure of such system is relatively low (typically not higher than 0.7 MPa), and its component size is too large for heavy trucks. By contrast, the working pressure of a hydraulic power steering gear can be as high as more than 10 MPa, and its components are consequently small in size. A hydraulic system is noiseless during operation, and features short operation lag time and absorption of impact from uneven roads. Therefore, hydraulic power steering … Read more…

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