C18 Generator set and C18 Marine Engines Caterpillar

Removal Procedure

Start By:

1. Remove the turbocharger. Refer to Disassembly and Assembly, "Turbocharger - Remove".

2. Remove the heat exchanger. Refer to Disassembly and Assembly, "Heat Exchanger - Remove".

3. Remove the camshaft gear. Refer to Disassembly and Assembly, "Camshaft Gear - Remove and Install".

4. Remove the rocker arms and the rocker shafts. Refer to Disassembly and Assembly, "Rocker Arm and Shaft - Remove".

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Illustration 1	g01056681

1. Remove bolts (2) and thrust plate (1).
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   Illustration 2	g01071487

2. Remove sealing plate (3) from the front housing. Remove adapter assembly (4) from the crankshaft.
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   Illustration 3	g01056684

3. Remove O-ring seal (5) and O-ring seal (6) from sealing plate (3).
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   NOTICE
   Care must be used when removing or installing the camshaft. Do not damage the finshed surfaces of the camshaft or the camshaft bearings.

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   Illustration 4	g01056704

4. Use the bolts for the rocker arm shaft assembly to install Tooling (A) at Location (Y).
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   Illustration 5	g01047945

5. Install Tooling (B) on front housing (7). Tooling (B) is used to support camshaft (8). Do not tighten the bolts for Tooling (B) at this time.
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   Illustration 6	g01056675

6. Remove flat head screws (9) and cover (10). Remove the O-ring seal from the cover.
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   Illustration 7	g01047961

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   Illustration 8	g01047996

   Note: It is necessary to install Tooling (C) on the camshaft. Tooling (C) will support the rear of the camshaft as the camshaft is moved out of the cylinder head and into Tooling (B). Align camshaft (8) with the bore of Tooling (B). Tighten the bolts that hold Tooling (B) to front housing (7).

7. Move camshaft (8) forward and install one Tooling (C) in the end of the camshaft. Again, move the camshaft forward and install remaining Tooling (C) into the back of first Tooling (C).

   Note: Avoid lifting the camshaft with Tooling (D). The camshaft should rest on Tooling (A). Lifting of the camshaft can cause misalignment as the camshaft is removed, resulting in damage to the camshaft bearings.

8. Use Tooling (D) to move camshaft (8) toward the front of the engine. Reposition Tooling (D), as needed.

9. Carefully slide the camshaft to the front of the engine for removal. Use two people to remove the camshaft. Keep the camshaft level while the camshaft is being removed from the cylinder head. The weight of camshaft (8) is approximately 39 kg (86 lb).

   Note: Rotate the camshaft during removal. This will prevent the camshaft from binding in the camshaft bearings.

10. Remove Tooling (C) from the camshaft.

11. Remove Tooling (B) from front housing (7).

12. Remove Tooling (A) from the cylinder head.

Alternative Removal Procedure

Start By:

1. Remove the turbocharger. Refer to Disassembly and Assembly, "Turbocharger - Remove".

2. Remove the heat exchanger. Refer to Disassembly and Assembly, "Heat Exchanger - Remove".

3. Remove the camshaft gear. Refer to Disassembly and Assembly, "Camshaft Gear - Remove and Install".

4. Remove the rocker arms and the rocker shafts. Refer to Disassembly and Assembly, "Rocker Arm and Shaft - Remove".

Note: This is an optional procedure to remove the camshaft. The preceding tool list shows the required tooling for removing the camshaft from the front of the engine or the rear of the engine.

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Illustration 9	g01056681

1. Remove bolts (2) and thrust plate (1).
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   Illustration 10	g01071487

2. Remove sealing plate (3) from the front housing. Remove adapter assembly (4) from the crankshaft.
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   Illustration 11	g01056684

3. Remove O-ring seal (5) and O-ring seal (6) from sealing plate (3).
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   Illustration 12	g01056675

4. Remove flat head screws (9) and cover (10). Remove the O-ring seal from the cover.
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   NOTICE
   Care must be used when removing or installing the camshaft. Do not damage the finshed surfaces of the camshaft or the camshaft bearings.

5. To remove the camshaft from the rear of the engine, go to Step 6 through Step 9. To remove the camshaft from the front of the engine, go to Step 10 through Step 13.
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   Illustration 13	g01056714
   Removal of the camshaft from the rear of the engine

6. To remove the camshaft from the rear of the engine, install Tooling (F) on the front of camshaft (8) with Tooling (G).

   Note: Carefully align Tooling (F) with the end of camshaft (8). If the adapter and the camshaft are not aligned, the camshaft may not be removed. The adapter and camshaft bearing will interfere.

7. Install Tooling (E) on Tooling (F).

8. Carefully slide the camshaft to the rear of the engine for removal. Use two people to remove the camshaft. Keep the camshaft level while the camshaft is being removed from the cylinder head. The weight of camshaft (8) is approximately 39 kg (86 lb).

   Note: Rotate the camshaft during removal. This will prevent the camshaft from binding in the camshaft bearings.

9. Remove Tooling (E), Tooling (F), and Tooling (G) from the camshaft.
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   Illustration 14	g01056717
   Remove the camshaft from the front of the engine.

10. To remove the camshaft from the front of the engine, install Tooling (F) on the rear of camshaft (8) with Tooling (G).

    Note: Carefully align Tooling (F) with the end of camshaft (8). If the adapter and the camshaft are not aligned, the camshaft may not be removed. The adapter and camshaft bearing will interfere.

11. Install Tooling (E) on Tooling (F).

12. Carefully slide the camshaft to the front of the engine for removal. Use two people to remove the camshaft. Keep the camshaft level while the camshaft is being removed from the cylinder head. The weight of camshaft (8) is approximately 39 kg (86 lb).

13. Remove Tooling (E), Tooling (F), and Tooling (G) from the camshaft.