3406C GENERATOR SET ENGINE Caterpillar


Rocker Shaft Assemblies

Usage:

Disassemble & Assemble Rocker Shaft Assemblies

Start By:

a. remove rocker shaft assemblies and push rods

1. Remove retainer (2) from the end of the shafts.

2. Remove the washers and rocker arms (1).

3. Remove pins (6) that hold the brackets to each end of the shaft.

NOTE: The center bracket does not have a pin.

4. Remove bracket (3), rocker arm (4) and spring (5).

NOTE: The following steps are for assembly of the rocker shaft assemblies.

5. Put clean engine oil on the shaft.

6. Install the bracket and rocker arms for the center bracket.

7. Install spring (5) rocker arm (4) and bracket (3). Install the pin that holds the brackets on each end of the rocker shaft. Install the pin until it extends 12.7 ± 1.0 mm (.50 ± .04 in) from the surface of the bracket.

8. Install rocker arm (1) on each end of the shaft. Install the washers as needed to get an assembled clearance of .030 to 1.40 mm (.0012 to .055 in) at each end of the shaft. Install retainer (2) on each end of the shaft.

End By:

a. install rocker shaft assemblies and push rods

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