The common rail injection system, often referred to as a high-pressure injection system, represents a sophisticated fuel injection technology utilized in contemporary diesel engines. This system operates by channeling a substantial quantity of fuel at elevated pressures directly into the combustion chamber via a common rail. This rail is a solitary, pressurized conduit that supplies fuel consistently to the injectors. The heightened pressure enables meticulous management of the fuel delivery, enhancing the engine’s efficiency and optimizing fuel economy. Due to their ability to maximize fuel efficiency and minimize emissions, common rail injection systems are increasingly favored in the automotive sector.

1. B41 Injector Adjust Shim Packing List and Package Size

• Injector Adjust Shim Spare Parts List

No.	1	2	3
Image
Name	Injector Adjust Shim Size	Injector Adjust Shim Thickness	Injector Adjust Shim  Accuracy
Description	Size:Φ2.5*Φ6.4	1.11-1.2	0.01/ gear

• Minors are prohibited from using the injector adjust shim,plastic filmto avoid personal injury.
• The injector adjust shimisdisposable installation accessory and need to be replaced for reinstallation.
• Plastic filmis non-degradable materials. Please dispose of it properly after use.
• The injector adjust shim and installation parts guide tube should be treated with appropriate sealing fuel during installation.

• Injector Adjust Shim Packing Size

2. B41 Injector Adjust Shim Installation Precautions

• The replacement of the injector adjust shimmust strictly follow the electrical system, the approved pressure of the low-pressure fuel intake system, the approved pressure of the high-pressure fuel circuit system, and fuel system replacement consumables requirements (including the low-pressure fuel circuit system filter and the high-pressure fuel circuit) specified in the vehicle engine maintenance manual.
• Replacement of wearing parts of the fuel system, cleaning requirements for the connection between the fuel system and the injector adjust shim, the fitting clearance of the injector adjust shimconnection, the installation angle and tightening torque of the injector adjust shim, the fitting clearance of the intake system, and the fitting clearance of the exhaust systemto ensure the service life of the engine and the normal operation of the injector adjust shim.
• When installing the injector adjust shimon the engine, it is necessary to clean the engine cylinder block, cylinder head and other parts connected to the injector adjust shimand ensure that they are clean and free of dust, carbon deposits, water, rust spots, etc.
• Before installation, check whether the injector adjust shimand the nozzle sealing washer shimhave been replaced and installed on the injector adjust shim.
• When installing the injector adjustshim, apply lubricant between the injector adjust shim, nozzle sealing washer shim, and O-ring.
• Failure to replace the new sealing ring gasket may lead to: injector adjust shimdeformation, fuelleakage, air leakage, serious damage to the injector adjust shim, causing the injector adjust shim to break and cause engine damage.
• When installing the injector adjust shimon the engine, please carefully check that the parts related to the installation of the injector adjust shim, such as the injector adjust shimpressure plate, screws, push rods and other accessories are not deformed, and strictly follow the operating procedures in the engine maintenance manual for installation.
• It is forbidden to expose the injector adjust shimfor a long time in an environment with severe dust pollution and corrosion to iron products.
• It is forbidden to expose the injector adjust shimfor a long time in a strong magnetic field environment.

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