C7 Marine Engines Caterpillar

Removal Procedure

Start By:

1. Remove the cylinder head assembly. Refer to Disassembly and Assembly, "Cylinder Head - Remove".

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Illustration 1	g01127720

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The valve spring keepers can be thrown from the valve when the valve spring compressor is released. Ensure that the valve spring keepers are properly installed on the valve stem. To help prevent personal injury, keep away from the front of the valve spring keepers and valve springs during the installation of the valves.

Note: The following components of the exhaust valves are different from the components of the inlet valves: spring retainer (5) , valve spring (4) and valve (2) .

1. Use Tooling (A) to compress valve spring (4) . Remove retainer locks (6) .

2. Remove Tooling (A) . Remove spring retainer (5) , valve spring (4) , and washer (3) .

3. Remove valve seal (1) and valve (2) .

Installation Procedure

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Illustration 2	g01127720

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Improper assembly of parts that are spring loaded can cause bodily injury. To prevent possible injury, follow the established assembly procedure and wear protective equipment.

1. Lubricate valve (2) with clean engine oil. Install valve (2) in the cylinder head assembly. Install new valve seal (1) against the valve guide.

2. Place the following items on the valve stem: washer (3) , valve spring (4) and spring retainer (5) .

Note: A small amount of grease can be used to hold the retainer locks in position during installation.

3. Use Tooling (A) to compress valve spring (4) . Install retainer locks (6) .

End By: Install the cylinder head assembly. Refer to Disassembly and Assembly, "Cylinder Head - Install".