3408C & 3412C MARINE ENGINES Caterpillar


Crankshaft Pulley & Damper

Usage:

Remove & Install Crankshaft & Damper

Start By:

a. remove fan belts

1. Remove twelve nuts (2).

2. Use two people to remove pulley (1). Pulley (1) weighs approximately 21 kg (46 lb).

3. Remove pulley (3).

4. Move damper (4) forward far enough to attach a lifting sling as shown. Attach the lifting sling to a suitable lifting device.

5. Remove damper (4). Damper (4) weighs 29 kg (65 lb).

NOTE: Adapter (6) is held in place by twelve bolts (5). When removing twelve bolts (5) hold adapter (6) by hand to prevent it from falling.

6. Hold adapter (6) by hand, remove twelve bolts (5).

7. If necessary, remove twelve studs (7) with Tool (A).

NOTE: The following steps are for the installation of the crankshaft pulley and damper.

8. If removed, install twelve studs (7) in adapter (6) with Tool (A).

9. Place adapter (6) in position on the crankshaft.

10. Install twelve bolts (5).

11. Install damper (4) on the adapter.

12. Install pulley (3) on the adapter.

13. Place pulley (1) in position on the adapter.

14. Install twelve nuts (2). Tighten twelve nuts (12) to a torque of 65 ± 10 N·m (48 ± 7 lb ft).

End By:

a. install fan belts

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