C15 On-highway Engine Caterpillar

Installation Procedure

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Illustration 1	g01054374

1. Use Tooling (B) and Tooling (D) in order to clean electronic unit injector seat (8).

2. Use Tooling (C) and Tooling (D) in order to clean electronic unit injector bore (9).
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   Illustration 2	g01039929

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   NOTICE
   Do not reuse O-ring seals. New O-ring seals must be used.

3. Install O-ring seals (7) on electronic unit injector (2). Lubricate the top two O-ring seals with a 50/50 mixture of clean engine oil and Tooling (E).
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   Illustration 3	g01019373

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   NOTICE
   When a fuel injector group is serviced, the new fuel injector group's electronic injector code must be programmed into the engine's personality module software by using the calibration menu on the Electronic Service Tool. If the new fuel injector group's electronic code is not entered, the previous fuel injector group's characteristics are assumed. If it is not possible to immediately reprogram the electronic injector code of the injector into the personality module software, the engine will not be severely harmed. The new electronic injector code should be reprogrammed as quickly as possible in order to optimize engine performance.

4. Injector code (10) will be used later if the injectors have been changed. Write down injector code (10) which is located on the solenoid.
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   Illustration 4	g01000989

5. Install electronic unit injector (2), spacer (5), and clamp (6) in the cylinder head.
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   NOTICE
   Do not reuse the injector hold down bolts. New injector hold down bolts must be used.

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   NOTICE
   If the injector hold down bolt is loose during the removal procedure, inspect the injector bore for wear and debris. Replace the clamp and spacer.

6. Install bolt (4). Tighten bolt (4) according to the following procedure.

   1. Tighten the bolt for the electronic unit injector to a torque of 55 ± 10 N·m (41 ± 7 lb ft).

   2. Loosen the bolt until you can turn the bolt by hand.

   3. Tighten the bolt for the electronic unit injector again to a torque of 55 ± 10 N·m (41 ± 7 lb ft).

7. Install bridge assemblies (3) in the respective locations.

8. Connect harness assembly (1) on electronic unit injector (2). Tighten the nuts to a torque of 2.5 ± 0.25 N·m (22 ± 2 lb in).

End By:

1. Install the rocker arms and the rocker arm shaft. Refer to Disassembly and Assembly, "Rocker Arm and Shaft - Install".