3406E TRUCK ENGINE Caterpillar


Injector Sleeves

Usage:

Remove and Install Injector Sleeves


*Part of 9U-6891 Sleeve Tool Group

Start By:

a. remove rocker arm and shaft assemblies

b. remove electronic unit injectors

1. Mark bridge assemblies (1) for purpose of reassembly. Remove two bridge assemblies (1).

2. Install the puller stud from Tooling (A) into injector sleeve (2), as shown.

3. Install the bridge, thrust bearing, washer and nut from Tooling (A), over the stud (Step 2), as shown.

4. Tighten the nut on Tooling (A) until injector sleeve (2) is pulled free of the cylinder head.

5. Remove the tooling from injector sleeve (2).

6. Remove the O-ring seals from injector sleeve (2). Check the condition of injector sleeve (2). If the part is worn or damaged, replace the part.

7. Repeat Steps 1 through 5 for the remaining injector sleeves.

NOTE: Use the following steps to install the injector sleeves.


NOTICE

Before starting installation ensure that the injector sleeve and cylinder head bore for the injector sleeve are completely clean and free of oil, dirt and sealant debris.


8. Use Tooling (B) to thoroughly clean the bore for injector sleeve (2).

NOTE: Ensure that the fuel passage in the head is clean and remove any debris from the use of Tool (B) (brushing process).

9. Install new O-ring seals on injector sleeve (2).

10. Install the stud from Tooling (A) into the threads of injector sleeve (2).

NOTE: Do not apply retaining and anti-seize compounds to the cylinder head surfaces. Put the compounds on the injector sleeve only, described as follows.

11. Do the following to apply retaining and anti-seize compounds to the contacting surfaces of injector sleeve (2):

a. Put 5P-3931 Anti-Seize Compound on the O-ring seals and surface Marked "X" on injector sleeve (2), as shown in the illustration.

b. Put 4C-9507 Retaining Compound on the surface marked "Y" on injector sleeve (2), as shown in the illustration.

12. Position Tool (A) and injector sleeve (2) into the cylinder head. Use care not to damage the O-ring seals on injector sleeve (2). Use hand force only to push the injector sleeve into the cylinder head assembly.


NOTICE

Ensure that the injector sleeve is properly seated in the cylinder head. Use a hammer and Tooling (C) to seat the injector sleeve. The tooling and injector sleeve will "RING" when the injector sleeve makes contact at the base of the bore and is completely seated.


13. After injector sleeve (2) is positioned completely into the cylinder head by hand, use Tool (C) and a hammer to seat injector sleeve (2).

14. Use a clean towel to remove any retaining or anti-seize compound from the bores of the cylinder and injector sleeve (2).

End By:

a. install electronic unit injectors

b. install rocker arm and shaft assemblies

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