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

Removal Procedure

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Illustration 1	g01350649

1. Remove eight bolts (2) and guard (1).

2. Attach Tooling (A) and a suitable lifting device to stub shaft (3) and remove bolts (4). The weight of stub shaft (3) is approximately 23 kg (50 lb).
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   Illustration 2	g01350646

3. Remove two bolts (5) and insert Tooling (B).

4. Remove the remaining bolts (5).
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   Illustration 3	g01350651

5. Slide the first vibration damper (6) forward and install a suitable lifting device. Remove vibration damper (6).

6. Slide adapter (7) forward. Attach a suitable lifting device and remove adapter (7). The weight of adapter (7) is approximately 27 kg (60 lb).

7. Slide the second vibration damper (6) forward and install a suitable lifting device. Remove vibration damper (6).

8. The weight of vibration dampers (6) is approximately 150 kg (331 lb).

Installation Procedure

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Illustration 4	g01350651

1. Install Tooling (B) in the front of the crankshaft.

2. Attach a suitable lifting device and position the second vibration damper (6) on Tooling (B) and put into position.

   Note: Align the mark on the crankshaft with the mark on the second vibration damper.

3. Attach a suitable lifting device to adapter (7). The weight of adapter (7) is approximately 27 kg (60 lb). Install adapter (7).

   Note: Align the mark on the second vibration damper with the mark on the adapter.

4. Attach a suitable lifting device and position the first vibration damper (6) on Tooling (B) and put into position. The weight of vibration dampers (6) is approximately 150 kg (331 lb).

   Note: Align the mark on the adapter with the mark on the first vibration damper.

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   Illustration 5	g01350646

5. Apply Tooling (C) to the threads of bolts (5). Install bolts (5).

6. Remove Tooling (B).

7. Install two remaining bolts (5). Tighten bolts (5) to a torque of 1125 ± 100 N·m (830 ± 75 lb ft).

   Note: Refer to the Specifications Module, "Vibration Damper" for more information.

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   Illustration 6	g01350649

8. Use Tooling (A) and attach a suitable lifting device to stub shaft (3).

9. Position stub shaft (3) and install bolts (4). Tighten bolts (4) to a torque of 1150 ± 150 N·m (848 ± 111 lb ft).

10. Install guard (1) and eight bolts (2). Tighten bolts (2) to a torque of 15 ± 3 N·m (11 ± 2 lb ft).