G3408C and G3412C Engines Caterpillar

Removal Procedure

Start By:

1. Remove the oil filter base. Refer to Disassembly and Assembly, "Oil Filter Base - Remove and Install".

1. Drain the coolant below the level of the exhaust manifold into a suitable container for storage or disposal.

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Illustration 1	g00785157

2. Remove sensor (2) from the block. Remove two bolts (1) and the washers . Remove detonation module (3) .

3. Remove bolts (5) , the nuts, and the washers with spacer (4) .

4. Remove fumes disposal tube (6) .

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Illustration 2	g00785161

5. Remove bolt (7) and the washer . Loosen bolt (8) .

6. Disconnect elbow (9) from exhaust manifold (10) . Check the condition of the O-ring seal at the exhaust manifold. If the O-ring seal is worn or damaged, use a new part for replacement.

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Illustration 3	g00785166

7. Remove bolts (11) , the nuts, and the washers .

8. Remove bolts (12) and (13) , the nuts, and the washers.

9. Remove two elbows (14) and adapter (15) . Check the condition of the gaskets at the exhaust manifold. If the gaskets are worn or damaged, use new parts for replacement.

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Illustration 4	g00785171

10. Fasten straps and a suitable lifting device to exhaust manifold (10) . Remove nuts (16) and spacers (17) .

11. Remove exhaust manifold (10) . The weight of the exhaust manifold is approximately 27 kg (60 lb).

12. Check the condition of the gaskets between the exhaust manifold and the cylinder head assembly. If the gaskets are worn or damaged, use new parts for replacement.