ENGINE AR 2545753 - Caterpillar

Note: This is an optional procedure to install the electronic unit injectors. The method should ONLY be used when all electronic unit injectors are installed and when the engine is removed from the application.
Ensure that all adjustments and repairs that are carried out to the fuel system are performed by authorised personnel that have the correct training.Before begining ANY work on the fuel system, refer to Operation and Maintenance Manual, "General Hazard Information and High Pressure Fuel Lines" for safety information.Refer to Systems Operation, Testing and Adjusting Manual, "Cleanliness of Fuel System Components" for detailed information on the standards of cleanliness that must be observed during ALL work on the fuel system.
Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids.Dispose of all fluids according to local regulations and mandates.
Use a deep socket in order to remove the electrical connections from the electronic unit injectors. Use of incorrect tooling will result in damage to the electronic unit injectors.
Illustration 7 g01341874
Typical Injector Code
If a replacement electronic unit injector is installed, the correct injector code must be programmed into the electronic control module. Refer to Troubleshooting, "Injector Code - Calibrate" for more information. The code that is required to obtain the injector code is located at Position (X). Note: Record the Injector Code (X) before the electronic unit injector is installed.
Use Tooling (D) to remove any fuel from the cylinder. Note: Evacuate as much fuel as possible from the cylinder before installing the electronic unit injector.
Ensure that the fuel inlet port of the electronic unit injector is capped. Ensure that the electronic unit injector is clean.
Illustration 8 g01255701
On installing an original electronic unit injector, install a new O-ring seal (15) and sealing washer (14) to electronic unit injector (11). Ensure that the O-ring seal (15) and sealing washer (14) on a new electronic unit injector are not damaged and in place.Note: Do not lubricate the O-ring seal.
Ensure that the seat for the electronic unit injector in the cylinder head is clean and free from damage. Ensure that the sealing washer has been removed from the cylinder head.
Illustration 9 g01255699
Install clamp (13) to electronic unit injector (11). Install the electronic unit injector assembly into the original location in the cylinder head. Note: Ensure that the electronic unit injector is pushed firmly against the seat in the cylinder head. Install the electronic unit injector for number one cylinder first. Install the electronic unit injectors in numerical order.
Install a new torx screw (12) to clamp (13). Tighten the torx screw finger tight.
Remove the cap from electronic unit injector (11). Install a new seal (8) to electronic unit injector (11) and to the valve mechanism cover base. Ensure that the flange on the seal is flush with the valve mechanism cover base.
Remove the plugs from the new fuel injection line. Loosely install the fuel injection line.