879194158 Mercruiser STUD

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.
Illustration 1 g02704596
Injector code
If the original electronic unit injector (3) is installed, ensure that the electronic unit injector is installed into the original location.
If a replacement electronic unit injector is installed, the correct seven digit injector code that is located in Position (A) must be programmed into the electronic control module. Refer to Troubleshooting, "Injector Code - Calibrate" for more information. Note: Record the seven digit injector code in Position (A) before the electronic unit injector is installed.
Ensure that the fuel inlet port of the electronic unit injector is capped. Ensure that the electronic unit injector is clean.
Illustration 2 g02851878
If necessary, install studs (9) to the cylinder head. Tighten the studs to a torque of 20 N m (177 lb in)
If the original electronic unit injector (3) is to be reused, remove the protective cap from the nozzle and install a new sealing washer (10). Note: Ensure that the nozzle for the electronic unit injector is not damaged during installation of the new sealing washer.
Remove the plug from the electronic unit injector port in the cylinder head.
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.
Position clamp (6) onto electronic unit injector (3). Align the assembly of electronic unit injector (3) to the bore for the electronic unit injector in the cylinder head. Note: Ensure that the clamp is correctly positioned onto the electronic unit injector.
Push only on injector clamp (6) in order to install electronic unit injector (3). Do not apply pressure on any other part of the electronic unit injector. Ensure that the electronic unit injector is pushed firmly against the seat in the cylinder head.
Install washer (8) and nut (4) onto stud (9). Tighten the nut finger tight. Note: Ensure that the washer is correctly orientated.
Remove the plugs from the new fuel injection line. Install the fuel injection line nuts hand tight. Refer to Disassembly and Assembly, "Fuel Injection Lines - Install" for the correct installation procedure. Note: Ensure that the ends of the fuel injection line are seated into the electronic unit injector and the fuel manifold.Note: Do not torque the fuel injection line nuts before the final torque has been applied to the electronic unit injector clamp nuts (4).
When nuts (4) are installed, the nuts must be tightened in two stages. Follow Step 12.a through 12.b for the correct torque sequence.
Tighten nuts (4) to an initial torque of 15 N m (133 lb in).
Tighten nuts (4) to a final torque of 25 N m (221 lb in).
If necessary, repeat Step 1 through Step 12.b in order to install the remaining electronic unit injectors.
Tighten the fuel injection line nuts to a torque of 25 N m (221 lb in). Refer to Disassembly and Assembly, "Fuel Injection Lines - Install" for further information.
Illustration 3 g02706897
Install a new O-ring seal (7) to the connection on hose assembly (2).
Install hose assembly (2) to electronic unit injector (3).
Install clip (1) to electronic unit injector (3).
If necessary, repeat Step 15 through Step 17 in order to connect the remaining hose assemblies (2).
Connect wiring harness assemblies (5) to the electronic unit injectors. Slide the locking tab into the locked position
If necessary install the exhaust gas recirculation valve. Refer to Disassembly and Assembly, "Exhaust Gas Recirculation Valve - Remove and Install" for the correct procedure.
If necessary install the diesel particulate filter supporting bracket. Refer to Disassembly and Assembly, "Support and Mounting (CEM) - Remove and Install" for the correct procedure.
Install the wiring harness assembly. Refer to Disassembly and Assembly, "Fuel Injection Lines - Install" for the correct procedure.
Replace the primary fuel filter. Refer to Operation and Maintenance Manual, "Fuel System Primary (Water Separator) Element - Replace" for the correct procedure.
Replace the secondary fuel filter. Refer to Operation and Maintenance Manual, "Fuel System Secondary Filter - Replace" for the correct procedure.
Turn the fuel supply to the ON position.
Turn the battery disconnect switch to the ON position.
Remove the air from the fuel system. Refer to Operation and Maintenance Manual, "Fuel System - Prime" for the correct procedure.