C18 Marine Engines Caterpillar

Removal Procedure

Start By:

1. Remove the turbocharger.

2. Remove the expansion tank (jacket water).

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Illustration 1	g03060258

1. Remove brackets (1) and studs (2).

2. Remove elbow (3). Discard the gasket and the O-ring seals. Use a new gasket and O-ring seals for installation.
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   Illustration 2	g03060265

3. Remove locknuts (4). Remove the washers and spacers. Discard the locknuts and use new locknuts for installation.

4. Remove exhaust manifold (5).
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   Illustration 3	g03060299

5. Remove and discard studs (6). Use new studs for installation.
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   Illustration 4	g03060317

6. Remove coupling (7) and discard the O-ring seals. Use new O-ring seals for installation.

Installation Procedure

1. Install exhaust manifold (5) in the reverse order of removal.

   1. Apply Tooling (A) to the bore and O-ring seals for coupling (7).

   2. Tighten studs (6) to a torque of 35 ± 5 N·m (26 ± 4 lb ft).

   3. Apply Tooling (B) to locknuts (4).
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      Illustration 5	g03060359

   4. Using the tightening procedure in Illustration 5, tighten locknuts (4) to a torque of 38 ± 5 N·m (28 ± 4 lb ft).

   5. Apply Tooling (A) to the bores and O-ring seals for elbow (3).

   6. Apply Tooling (B) to studs (2) and tighten to a torque of 27 ± 4 N·m (20 ± 3 lb ft).