G3508B, G3512B, G3512B, G3516B and G3520B Petroleum Engines Caterpillar

Removal Procedure

Start By:

1. Remove the exhaust elbow. Refer to Disassembly and Assembly, "Exhaust Elbow - Remove and Install".

2. Remove the turbochargers. Refer to Disassembly and Assembly, "Turbocharger - Remove".

3. Remove the exhaust bypass valve. Refer to Disassembly and Assembly, "Exhaust Bypass Valve - Remove and Install".

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Illustration 1	g01338817

1. Remove O-ring seal (8) from housing (7).

2. Remove clamps (6) and couplings (5). Remove housing (7).

3. Remove bellows assemblies (4).

   Note: Ensure that any bellows assemblies are not damaged with any tools.

4. Remove bolts (2) and remove manifolds (1) and (3). Remove the O-ring seals.

5. Use the following steps if only one of the sections of the exhaust manifold must be removed.
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   Illustration 2	g01338932

   1. Remove the bolts in order to remove manifolds (9) from bellows assemblies (10).
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      Illustration 3	g01338944

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      Illustration 4	g01338947

   2. Remove bolts (11) and spacer (12) from each exhaust manifold (9).

   3. Remove O-ring seal (13) from exhaust manifold (9). Remove O-ring seal (14) that is installed between exhaust manifold (9) and the cylinder head.

   4. Repeat these steps for each section of the exhaust manifold that must be removed.