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

Removal Procedure

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Illustration 1	g01338093

1. Cut cable straps (2) and disconnect harness assemblies (3) from both thermistors (1).

   Note: Use care not to damage thermistors (1) if the thermistors are not removed from the exhaust elbow.

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   Illustration 2	g01338592

2. Remove four bolts (5) that fasten adapter (4) to exhaust elbow (6).
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   Illustration 3	g01338321

3. Disconnect harness assembly (7).

4. Remove bolt (10) and remove adapter (9) and plate (8).

5. Remove exhaust bellows (11).
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   Illustration 4	g01338323

6. Install Tooling (A) on exhaust elbow (6) and attach a suitable lifting device.

7. Remove bolts (12). Remove exhaust elbow (6) and the support. The weight of exhaust elbow (6) is approximately 45 kg (98 lb).
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   Illustration 5	g01338539

8. Remove seal ring (13) from exhaust elbow (6).
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   Illustration 6	g01338540

9. Remove seal ring (14) from exhaust elbow (6).

Installation Procedure

1. Inspect the condition of the seal rings for exhaust elbow (6). Replace the seal rings, if necessary.
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   Illustration 7	g01338540

2. Install seal ring (14) in exhaust elbow (6).
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   Illustration 8	g01338539

3. Install seal ring (13) on exhaust elbow (6).
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   Illustration 9	g01338323

4. Install Tooling (A) on exhaust elbow (6) and attach a suitable lifting device. The weight of exhaust elbow (6) is approximately 45 kg (98 lb).

5. Position exhaust elbow (6) and the support and install bolts (12).
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   Illustration 10	g01338321

6. Install exhaust bellows (11) that fasten exhaust elbow (6) to the turbochargers.

7. Position adapter (9) and plate (8) on the exhaust elbow and install bolt (10).

8. Connect harness assembly (7).
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   Illustration 11	g01338592

9. Install four bolts (5) that fasten adapter (4) to exhaust elbow (6).
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   Illustration 12	g01338093

10. Connect harness assemblies (3) for both thermistors (1). Install cable straps (2).