C18 Generator set and C18 Marine Engines Caterpillar

Installation Procedure

1. Ensure that the camshaft and camshaft bearings are thoroughly clean. Lubricate the camshaft lobes with a 50/50 mixture of Tooling (J) and clean engine oil. Apply a thin coat of clean engine oil on the camshaft bearings.
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   Illustration 1	g01056704

2. Install Tooling (A) on the cylinder head at Location (Y).
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   Illustration 2	g01056901

3. Install Tooling (B) on front housing (7). Do not tighten the bolts that hold Tooling (B) to front housing (7) at this time.

4. Use Tooling (H) to align Tooling (B) with the camshaft bearings. Tighten the bolts that hold Tooling (B) to front housing (7). Remove Tooling (H).

   Note: Tooling (H) should move freely from the bore of Tooling (B).

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   Illustration 3	g01047961

5. Install Tooling (C) on the rear of the camshaft.

6. Use two people to install the camshaft. Use Tooling (D) to assist in aligning camshaft (8) with the camshaft bearings. Carefully slide the camshaft into the cylinder head from the front of the engine. Keep the camshaft level while the camshaft is being installed in the cylinder head. The weight of camshaft (8) is approximately 39 kg (86 lb).

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

7. Remove Tooling (C) and finish installing camshaft (8) in the bore.

   Note: Tooling (C) must be removed before the camshaft can be completely installed in the cylinder head.

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

9. Remove Tooling (B) from the front housing.
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   Illustration 4	g01056675

10. Install the O-ring seal on cover (10). Position the cover on the rear of the cylinder head. Install flat head screws (9) and tighten to a torque of 13 ± 3 N·m (115 ± 27 lb in).
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    Illustration 5	g01056684

11. Install O-ring seal (5) and O-ring seal (6) in sealing plate (3). Lubricate O-ring seal (6) with a 50/50 mixture of Tooling (J) and clean engine oil.
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    Illustration 6	g01056682

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    Illustration 7	g01056681

12. Install sealing plate (3) in front housing (7). Install adapter assembly (4) in the sealing plate. Ensure that the dowel in adapter assembly (4) engages the hole in the camshaft.

13. Install thrust plate (1) . Apply Tooling (K) to bolts (2). Hold the thrust plate in position and install bolts (2). Evenly tighten bolts (2) until sealing plate (3) and the O-ring seal are seated against the cylinder head.

    Note: Ensure that the O-ring seal stays in the groove in sealing plate (3).

End By:

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

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

3. Install the heat exchanger. Refer to Disassembly and Assembly, "Heat Exchanger - Install".

4. Install the turbocharger. Refer to Disassembly and Assembly, "Turbocharger - Install".

Alternative Installation Procedure

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

1. Ensure that the camshaft and camshaft bearings are thoroughly clean. Lubricate the camshaft lobes with a 50/50 mixture of Tooling (J) and clean engine oil. Apply a thin coat of clean engine oil on the camshaft bearings.

2. To install the camshaft from the rear of the engine, go to Step 3 through Step 6. To install the camshaft from the front of the engine, go to Step 7 through Step 10.
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   Illustration 8	g01056714
   Install the camshaft from the rear of the engine.

3. To install 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.

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

5. Use two people to install the camshaft. Carefully slide the camshaft into the cylinder head from the rear of the engine. Keep the camshaft level while the camshaft is being installed in the cylinder head. The weight of camshaft (8) is approximately 39 kg (86 lb).

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

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

7. To install 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.

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

9. Use two people to install the camshaft. Carefully slide the camshaft into the cylinder head from the front of the engine. Keep the camshaft level while the camshaft is being installed in the cylinder head. The weight of camshaft (8) is approximately 39 kg (86 lb).

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

10. Remove Tooling (E), Tooling (F), and Tooling (G) from the camshaft.
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    Illustration 10	g01056675

11. Install the O-ring seal on cover (10). Position the cover on the rear of the cylinder head. Install flat head screws (9) and tighten to a torque of 13 ± 3 N·m (115 ± 27 lb in).
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    Illustration 11	g01056684

12. Install O-ring seal (5) and O-ring seal (6) in sealing plate (3). Lubricate O-ring seal (6) with a 50/50 mixture of Tooling (J) and clean engine oil.
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    Illustration 12	g01056682

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    Illustration 13	g01056681

13. Install sealing plate (3) in front housing (7). Install adapter assembly (4) in the sealing plate. Ensure that the dowel in adapter assembly (4) engages the hole in the camshaft.

14. Install thrust plate (1). Apply Tooling (K) to bolts (2). Hold the assembly in position and install bolts (2). Evenly tighten bolts (2) until sealing plate (3) and the O-ring seal are seated against the cylinder head.

    Note: Ensure that the O-ring seal stays in the groove in sealing plate (3).

End By:

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

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

3. Install the heat exchanger. Refer to Disassembly and Assembly, "Heat Exchanger - Install".

4. Install the turbocharger. Refer to Disassembly and Assembly, "Turbocharger - Install".