3412C Engine Caterpillar

Removal Procedure

Start By:

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

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Illustration 1	g00792432

1. Use Tool (A) and compress spring (2). Remove valve keepers (1). Remove Tool (A). Remove rotocoil (3) and remove spring (2) .

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Illustration 2	g00792437

Note: Put identification marks on each of the valves if the valves will be used again.

2. Remove shield (4) and valve (5) .

3. Use Tool (B) in order to check the condition of the valve springs. Refer to the Specifications Manual.

4. Repeat step 1 through step 3 for the remainder of the valve springs.

Installation Procedure

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Illustration 3	g00792466

1. Put shields (1) in position on rotocoil (2). Make sure that the shoulder of the shield is against the end of the rotocoil.

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Illustration 4	g00792469

2. Put clean engine oil on the valve stem. Put valve (3) and spring (4) in position in the cylinder head. Place the rotocoil (2) on the valve stem.

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Illustration 5	g00792476

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

3. Compress springs (4) with Tool (A). Install valve keepers (5) with the thicker end upward.

4. Remove Tool (A) and strike the valve with a soft hammer. Make sure that the valve keepers and the valves are in the correct position.

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