Description
Product Overview
The mechanical fuel injector relies on a high-pressure oil pump to deliver high-pressure fuel. The internal spring and needle valve cooperate to control the opening and closing of the injector, atomizing the fuel and spraying it into the cylinder to complete combustion and power generation. Under long-term construction site operations in high-temperature dust conditions, long-distance bumpy driving, and continuous impurities from diesel fuel, the internal needle valve sealing surface will wear, the spring elasticity will decline, and the sealing gasket will be burned out, resulting in fuel leakage, poor atomization, and power output attenuation. This product has standardized processing for the thread specification, installation hole spacing, and opening pressure parameters. During maintenance, the entire fuel injector can be directly replaced, eliminating the cumbersome process of disassembling and grinding the internal components. It is suitable for medium-sized freight trucks, wheeled loaders, agricultural large tractors, and fixed diesel generator sets for maintenance.
Core Advantages of the Single Product
Integrated tempered alloy steel housing, black passivation for rust prevention and pressure resistance, and not prone to deformation
The entire alloy steel is formed by one-piece turning, with a black passivation wear-resistant and rust-proof coating on the surface. It can withstand long-term high-pressure fuel impact and the alternating cold and hot vibrations of the engine compartment. The housing is less likely to crack, and the threads are less likely to rust and slip. It can maintain the internal sealing pressure for a long time.
Integrated hexagonal clamping platform in the middle, with uniform force during disassembly and no damage to the internal precision parts
The complete hexagonal limit structure in the middle section of the cylinder body is suitable for standard socket wrench disassembly and assembly. The force is uniform during tightening and disassembly, and it will not twist or squeeze the internal needle valve and spring, avoiding valve body deformation and sealing failure.
Independent return oil holes on the side, allowing excess fuel to smoothly return and stabilize the oil pressure
Standard return oil flow holes reserved on the side, allowing excess fuel to smoothly return to the fuel tank and stabilize the basic oil pressure inside the oil circuit. This eliminates the problem of high idle oil pressure and excessive fuel injection causing black smoke and carbon deposits.
Front-end matching of purple copper sealing gasket, with high-temperature insulation to prevent gas leakage
A pre-installed adapter-shaped purple copper gasket is pre-mounted at the front end of the nozzle. The soft and highly extensible material fills the assembly gap of the cylinder cover after tightening, isolating the high-temperature gas in the combustion chamber from flowing back, and blocking the leakage of high-pressure fuel through the installation gap.
Plastic dust protection cap on the rear end, protecting the precision nozzle holes during storage and transportation
A black plastic dust protection cap is pre-installed at the factory, completely covering the front nozzle to prevent dust,磕碰， and scratches on the atomization micro-holes. It avoids impurities entering the valve body during transportation， causing the needle valve to get stuck.
Whole machine factory calibration of working pressure under all conditions， no need for secondary adjustment during installation
The entire fuel injector is independently tested for the opening injection pressure， uniformity of fuel atomization， and high-pressure holding performance. The factory parameters are unified， and after assembly， the engine has stable idle speed， linear acceleration power， and significantly reduces maintenance and debugging time. List of Accessories
LRC6703708 Complete Mechanical Injector Assembly 1 piece
Front end pre-installed conical purple copper sealing gasket
Tail end pre-installed dust-proof plastic cap for the nozzle
Application scenarios
Suitable for medium-sized freight trucks, large agricultural tractors, small and medium-sized wheeled loaders, fixed diesel generator sets that are equipped with mechanical direct injection fuel supply systems. It is applicable to medium-sized mechanical direct injection diesel engines in environments such as high-intensity farming, long-distance urban and rural freight transportation, hot dust and impurity-containing diesel corrosion conditions, for the replacement of the fuel injection complete machine.
Product basic parameters
Product name: LRC6703708 Mechanical Direct Injection Injector Assembly
Part number: LRC6703708
Main material: Tempered alloy steel passivated housing, hardened alloy steel needle valve components, alloy pressure regulating spring, purple copper sealing gasket, plastic dust-proof cap
Structural features: Integrated long-tube injector housing, central hexagonal disassembly platform, side-mounted return oil hole, front-end atomizing nozzle + purple copper sealing gasket, tail-end dust-proof protection plug
Operating conditions: High-pressure fuel quantitative atomization injection, combustion chamber high-temperature heat insulation sealing, continuous vibration of engine compartment under alternating hot and cold conditions, corrosion of impurity diesel in various mechanical direct injection diesel engines
Product status: New complete injector assembly, factory completed with full set of bench tests for opening pressure, atomization accuracy, and high-pressure sealing
Packaging: Independent thickened shock-proof hard tube packaging, all nozzles, threads, and return oil holes are equipped with dust-proof protection plugs, foam buffer protection to avoid transportation impact damage to internal precision components, supports single-piece retail and bulk purchase in cases, and is compatible with cross-border small package logistics.
