3406E On-Highway Engine Caterpillar

Assembly Procedure

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Illustration 1	g01028860

Note: Do not reuse the O-ring seals on the rocker arm adjustment screws if the buttons have been removed from the adjustment screws.

1. Install the O-ring seals in button (6) and button (4).

2. Install the O-ring seals and the buttons on the valve rocker arms, as follows:

   1. Support valve rocker arm (7) in a vise with soft jaws.

   2. Position the O-ring seal and button (6) on the round end of adjustment screw (5).

   3. Use a soft hammer to seat button (6) on adjustment screw (5).

3. Install the O-ring seals and the buttons on the unit injector rocker arms, as follows:

   1. Support unit injector rocker arms (2) in a vise with soft jaws.

   2. Put the O-ring seal and button (4) in position on the end of adjustment screw (1).

   3. Use a soft hammer to seat button (4) on adjustment screw (1).

4. Repeat Steps 1 through 3 for the remainder of the rocker arm assemblies.

5. Lubricate rocker shaft (3) with clean engine oil and install the assembled rocker arms on rocker shaft (3).

End By:

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