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SUBJECT
DATE
Installation of the Fuel Injector
September 2012
Additions, Revisions, or Updates
Publication Number / Title
Platform
Section Title
Change
DDC-SVC-MAN-0082
DD Platform
Installation of the Fuel
Injector
Added torque specification for injector hold down bolt.
All information subject to change without notice.
9 54-12
Copyright © 2012 DETROIT DIESEL CORPORATION
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2 Installation of the Fuel Injector
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Installation of the Fuel Injector
Install as follows:
NOTE: Ensure excess fuel is removed from the top of the piston dome before fuel injector installation.
1. If the fuel system is contaminated:
a. Drain the fuel tanks and refill with clean fuel.
b. Clean the fuel water/separator and replace the fuel filters.
2. If the coolant system is contaminated with fuel, flush and reverse-flush the system.
3. If the oil system is contaminated, change the engine oil and filters.
NOTICE: The fuel injector tube bore should be cleaned and inspected for damage or leakage of coolant before
installation of the fuel injector.
4. Check to make sure the fuel injector tube bore is thoroughly clean.
5. If new or remanufactured fuel injectors are being used, write down the new (2) or remanufactured (1) fuel injector's
calibration code and note the cylinder location where it will be installed.
6. Remove the fuel injector nozzle tip protector.
NOTICE: The copper washer must be installed with the recess (1) facing the fuel injector body. Incorrect
installation can cause combustion gasses to enter the fuel system.
7. Install a new copper washer with the recess facing UP (1) toward the fuel injector and the flat side of the washer facing
DOWN (2).
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All information subject to change without notice.
Copyright © 2012 DETROIT DIESEL CORPORATION
9 54-12
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8. Apply a thin coat of acid-free grease or clean engine oil to the fuel injector seal rings and then use J-48837 (Fuel
Injector O-ring Installer) to install them in the fuel injector nut ring grooves. Make sure they are properly seated.
9. Install the fuel injector and clamp as an assembly into its respective fuel injector bore. Align the clamp over the bolt
hole, install the new bolt into fuel injector clamp and snug until the fuel injector fully seats, then release the fuel
injector bolt. DO NOT torque.
NOTE: If the high pressure lines leak after installation, the lines need to be replaced.
10. Install the high pressure fuel injector feed lines. Refer to section "Installation of the High Pressure Fuel Injector Lines" .
11. Torque the fuel injector hold-down bolt to 20 N·m (15 lb·ft) + 90 degree torque turn.
12. Insert the 14–pin connector from the fuel injector harness into the hole in the cam frame and install electrical
connections and Allen head hold-down bolts before torquing.
13. Install the spring clip onto the 14–pin connector.
14. Torque all of the fuel injector connections to 1.5 N·m (12 lb·in.).
15. Torque all of the Allen head fuel injector harness hold-down bolts to 10 N·m (7 lb·ft).
16. Input the fuel injector calibration codes that were recorded earlier into DDDL using the service routine.
All information subject to change without notice.
9 54-12
Copyright © 2012 DETROIT DIESEL CORPORATION
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2 Installation of the Fuel Injector
17. If injectors were replaced because of a tip failure or leak, the EGR cooler must be cleaned.
a. For DD13: Refer to section "DD13 Exhaust Gas Recirculation Cooler Water Manifold Cleaning Procedure to
Remove Excess Fuel from the Cooler after an Engine Brake Solenoid, Fuel Injector or a Turbocharger Failure" .
b. For DD15 and DD16: Refer to section "DD15 and DD16 Exhaust Gas Recirculation Cooler Cleaning Procedure
to Remove Excess Fuel from Cooler after an Engine Brake Solenoid, Fuel Injector or a Turbocharger Failure" .
18. Install the rocker cover. Refer to section "Installation of the Rocker Cover" .
19. Connect batteries.
20. Prime the fuel system. Refer to section "Priming of the Fuel System Using ESOC 350 Fuel Priming Pump" . Verify
repair.
21. If more than one fuel injector was changed, reset the leak detection threshold for the high pressure fuel system. Refer to
section "Threshold Resetting and Learning" .
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All information subject to change without notice.
Copyright © 2012 DETROIT DIESEL CORPORATION
9 54-12