C6.6 Engines for Caterpillar Built Machines Valve Mechanism Cover - Remove and Install - Composite Valve Mechanism Cover Caterpillar

Removal Procedure

Start By:

1. Disconnect the crankcase breather or remove the crankcase breather. Refer to Disassembly and Assembly, "Crankcase Breather - Remove".

1. If the valve mechanism cover is equipped with a heat shield, remove the heat shield.
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   Illustration 1	g01353908
   Typical example

2. Remove bolts (1) and (3) from valve mechanism cover (2).

3. Remove valve mechanism cover (2) from the valve mechanism cover base.

4. Remove joint (4) from valve mechanism cover (2).

Installation Procedure

1. Thoroughly clean the valve mechanism cover. Clean the mating surfaces of the valve mechanism cover base.
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   Illustration 2	g01353908
   Typical example

2. Install a new joint (4) to valve mechanism cover (2).

   Note: Ensure that the joint is fully seated into the groove of the valve mechanism cover.

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   Illustration 3	g01269961
   Typical example

3. Ensure that harness assemblies (6) are not in contact with the rocker arms or in contact with the valve mechanism cover base. Position valve mechanism cover (2) onto valve mechanism cover base (5). Ensure that harness assemblies (6) are not trapped during the assembly procedure. Install bolts (1) and (3).
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   Illustration 4	g01353909
   Tightening sequence for the valve mechanism cover

4. Tighten bolts (1) and (3) in the numerical sequence that is shown in Illustration 4. Tighten the bolts to a torque of 6 N·m (53 lb in).

5. If the valve mechanism cover is equipped with a heat shield, install the heat shield. Tighten the bolts to a torque of 9 N·m (79 lb in).

End By:

1. Connect the crankcase breather or install the crankcase breather. Refer to Disassembly and Assembly, "Crankcase Breather - Install".