C15 and C18 On-Highway Engines Rocker Arm and Shaft - Remove and Install Caterpillar


Rocker Arm and Shaft - Remove and Install
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1.1. Removal Procedure
2.1. Installation Procedure

Removal Procedure

Table 1
Required Tools 
Tool  Part Number  Part Description  Qty 
124-2946  Lifting Bracket 

Start By:

  1. Remove the valve mechanism cover.


NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.




    Illustration 1g01259735

    ------ WARNING! ------

    Valve rocker arms and unit injector rocker arms can move on the shaft after the bolts have been removed. The shaft should be kept level when removed from the cylinder head. To avoid possible personal injury, keep fingers clear of the valve rocker arms and the unit injector rocker arms when lifting the assembly from the cylinder head.


  1. Remove studs (1) from rocker arm shaft assembly (2).


    Illustration 2g01262841

  2. Use Tooling (A) in order to remove rocker arm shaft assembly (2).

Installation Procedure


NOTICE

Keep all parts clean from contaminants.

Contaminants may cause rapid wear and shortened component life.




    Illustration 3g01262841

  1. Use Tooling (A) in order to install rocker arm shaft assembly (2).


    Illustration 4g01259735

    ------ WARNING! ------

    Valve rocker arms and unit injector rocker arms can move on the shaft after the bolts have been removed. The shaft should be kept level when removed from the cylinder head. To avoid possible personal injury, keep fingers clear of the valve rocker arms and the unit injector rocker arms when lifting the assembly from the cylinder head.


  2. Install studs (1) onto rocker arm shaft assembly (2). Tighten studs to a torque of 50 ± 5 N·m (37 ± 4 lb ft). Turn the studs by an additional 45 ± 5 degrees.

  3. Adjust the electronic unit injectors. Refer to Testing and Adjusting, "Electronic Unit Injector - Adjust".

  4. Adjust the engine valve lash. Refer to Testing and Adjusting, "Engine Valve Lash - Inspect/Adjust".

End By:

  1. Install the valve mechanism cover.

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