C1.1, C1.5 and C2.2 Generator Sets Caterpillar

Removal Procedure

Start By:

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

Note: The removal procedure is identical for the three cylinder and the four cylinder engines. The Illustrations show a four cylinder engine.

1. Clean the bottom face of the cylinder head. Check the depth of the valves below the face of the cylinder head before the valve springs are removed. Refer to Specifications, "Cylinder Head Valves" for the correct dimensions.

2. Place a temporary identification mark on the heads of the valves in order to identify the correct position.

   Note: Do not stamp the heads of the valves. Stamping or punching the heads of the valves could cause the valves to fracture.

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Personal injury can result from being struck by parts propelled by a released spring force. Make sure to wear all necessary protective equipment. Follow the recommended procedure and use all recommended tooling to release the spring force.

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NOTICE
Ensure that the valve spring is compressed squarely or damage to the valve stem may occur.

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Illustration 1	g01315963
Typical example

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Illustration 2	g01325840
Typical example

3. Use Tooling (A) in order to compress the appropriate valve spring (3). Remove valve keepers (1) .

   Note: Do not compress the valve spring so that valve spring retainer (2) touches valve stem seal (4) .

4. Remove Tooling (A) .

5. Remove valve spring retainer (2). Remove valve spring (3) .

6. Remove valve (5) .

7. Remove valve stem seal (4) .

8. Repeat Steps 3 to 7 for the remaining valves.

Installation Procedure

Note: The installation procedure is identical for the three cylinder and the four cylinder engines. The Illustrations show a four cylinder engine.

1. Clean all components of the cylinder head assembly. Ensure that all ports, all coolant passages, and all lubrication passages in the cylinder head are free from debris. Follow Steps 1.a through 1.e in order to inspect the components of the cylinder head assembly. Replace any components that are worn or damaged.

   1. Inspect the cylinder head for wear and for damage. Refer to Systems Operation, Testing and Adjusting, "Cylinder Head Inspect".

   2. Inspect the valve seats for wear and for damage. Refer to Specifications, "Cylinder Head Valves" for further information.

   3. Inspect the valve guides for wear and for damage. Refer to Specifications, "Cylinder Head Valves" and Systems Operation, Testing and Adjusting, "Valve Guide - Inspect" for further information.

   4. Inspect the valves for wear and for damage. Refer to Specifications, "Cylinder Head Valves".

   5. Inspect the valve springs for the correct length. Refer to Specifications, "Cylinder Head Valves".

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Illustration 3	g01315893
Typical example

2. Use Tooling (B) to install new valve stem seals (4) onto each of the valve guides.

   Note: The outer face of the valve guides must be clean and dry before installing the valve stem seals.

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Illustration 4	g01325840
Typical example

3. Lubricate the stem of valve (5) with clean engine oil. Install valve (5) in the appropriate position in the cylinder head. Check the depth of the valve below the face of the cylinder head. Refer to Systems Operation, Testing and Adjusting, "Valve Depth - Inspect" for more information.

4. Install valve spring (3) to the cylinder head. Position valve spring retainer (2) onto valve spring (3) .

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Personal injury can result from being struck by parts propelled by a released spring force. Make sure to wear all necessary protective equipment. Follow the recommended procedure and use all recommended tooling to release the spring force.

Show/hide table

NOTICE
Ensure that the valve spring is compressed squarely or damage to the valve stem may occur.

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Illustration 5	g01315963
Typical example

5. Use Tooling (A) in order to compress valve spring (3). Install valve keepers (1) .

   Note: Do not compress the spring so that valve spring retainer (2) touches valve stem seal (4) .

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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.

6. Remove Tooling (A) .

7. Repeat Steps 4 to 6 for the remaining valves.

8. Place the cylinder head on a suitable support. Ensure that the heads of the valves are not obstructed. Gently strike the top of the valves with a soft hammer in order to ensure that valve keepers (1) are properly installed.

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