Mercedes-Benz Model W251 Steering Oil Return Line 2514600224 Line Parts

Brake Fluid Pipe 2213203672 Core Function:

Transmit brake fluid pressure, convert the force of the driver stepping on the brake pedal into hydraulic energy, drive the brake caliper (disc) or brake wheel cylinder (drum) action, to realize the vehicle deceleration or stopping. Role of the scene: directly related to driving safety, any working conditions (such as emergency braking, low-speed braking) are required to stabilize the pressure transfer to ensure reliable braking effect.

Steering Hose 2214663781 Core Functions:

In the hydraulic power steering system, it transmits the steering fluid (hydraulic oil), and delivers the hydraulic energy generated by the steering pump to the steering gear, which reduces the steering effort of the driver, and improves steering lightness and precision. Scenario: Only work when the driver turns the steering wheel, the hydraulic pressure changes with the steering effort and speed, to ensure that the steering system responds flexibly.

Structure and Material Differences Comparison Dimension Brake Oil Hose Steering Oil Hose 2124600381 Body Structure Divided into rigid hose (made of metal) and flexible hose (rubber hose). Rigid pipes are used in the fixed path of the body (e.g. chassis, engine compartment), and flexible pipes are used in the movable parts where the wheels are connected to the body (need to adapt to the suspension jump). Mostly rigid metal pipe (such as steel pipe) with a small amount of rubber hose, mainly distributed in the engine compartment, connected to the steering pump, steering gear and fluid reservoir, the path is relatively fixed.

Material Requirements Rigid hose:

High strength (e.g. galvanized steel pipe, aluminum alloy pipe), corrosion resistance, high pressure resistance (the working pressure of the braking system is usually 8-15MPa);

Flexible hose:

Inner layer of corrosion-resistant brake fluid (e.g. nitrile rubber), outer layer of abrasion-resistant, aging-resistant (e.g. braided steel wire reinforced layer + rubber protective layer) to prevent bursting.

Rigid hose:

need to be resistant to hydraulic fluid corrosion, medium pressure (steering system working pressure is usually 7-10MPa), commonly used low carbon steel pipe or aluminum alloy pipe;

Rubber hose:

need to be resistant to high temperature of hydraulic fluid (high ambient temperature of the engine compartment), with a certain degree of flexibility to adapt to the slightest vibration. Interface design The use of threaded interfaces with strong sealing performance (such as British pipe threads), with copper gaskets or O-rings, to prevent brake fluid leakage (leakage will directly lead to brake failure). Interface sealing requirements are high, commonly used ferrules or threaded fittings, leakage will lead to a reduction in steering power.

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