3508, 3512 and 3516 Generator Set Engines Caterpillar

Removal Procedure

Start By:

1. Remove the rocker shaft and the pushrods.

2. Remove the tachometer drive.

3. Remove the governor drive.

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Illustration 1	g02045597

1. Remove covers (1).
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   Illustration 2	g02045598

2. Remove bolt (3) and the cap. Disconnect rod assembly (2) from the fuel control shaft.
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   Illustration 3	g02045599

3. Remove bolts (5). Remove lever assembly (4) and rod assembly (2) as a unit.
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   Illustration 4	g02050814

4. Remove cover (6) from the front housing.
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   Illustration 5	g02050835

5. Pull valve lifters (7) away from the camshaft. Hold valve lifters (7) in position with O-ring seals.
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   Illustration 6	g02050873

6. Remove covers (8) for the camshaft drive gears from the flywheel housing.
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   Illustration 7	g02050875

7. Remove the bolt and plate (9) that fastens camshaft drive gear (10) to the camshaft.
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   Illustration 8	g02050877

8. Place the three washers from Tooling (B) behind plate (9) and install the bolt.
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   NOTICE
   Do not apply more than 51675 kPa (7500 psi) pressure to the hydraulic puller. The adapters are rated at 6 1/2 tons each and the hydraulic puller is rated at 17 tons at 68900 kPa (10000 psi). If too much pressure is applied, the gear may be damaged.

9. Install Tooling (B) on camshaft drive gear (10). Apply 51675 kPa (7500 psi) to Tooling (B). Strike the screw on Tooling (B) with a hammer until camshaft drive gear (10) is free from the camshaft. Remove Tooling (B) and camshaft drive gear (10).
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   Illustration 9	g02050934

10. Remove bolts (11) and thrust washers (12) that fasten the camshaft to the engine block.

11. Perform Steps 6 through 10 for the camshaft on the other side of the engine.
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    Illustration 10	g02050937

12. Install Tooling (C) on each end of the camshaft.

    Note: Tooling (D) can be installed on the flywheel housing in order to remove the camshaft from the rear. Tooling (D) can also be installed on the front housing in order to remove the camshaft from the front of the engine.

13. Install Tooling (D) on the flywheel housing.

14. Install Tooling (E) on the end of Tooling (C).

    Note: The following Step is for 3508 Engines.

    Note: The weight of the camshaft for 3508 Engines is approximately 45 kg (100 lb). The camshaft is one piece.

15. Rotate the camshaft with Tooling (E). Pull the camshaft out of the engine until a suitable lifting device can be attached. Remove the camshaft from the engine.

    Note: The following Steps are for 3512 and 3516 Engines.

    Note: The weight of the camshaft for 3512 Engines is approximately 64 kg (140 lb). The weight of the camshaft for 3516 Engines is approximately 82 kg (180 lb).

16. Rotate the camshaft with Tooling (E). Pull the camshaft out of the engine until a suitable lifting device can be attached. Remove front camshaft (13) and rear camshaft (14) as a unit.
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    Illustration 11	g02051018

17. Remove bolts (15). Separate the camshafts and remove spacer (16).

18. Remove the dowel from the front of the camshaft, if necessary.

19. Repeat Steps 12 through 18 for the other camshaft.